+Art O You are absolutely right ! Of the China products you will get, what you paid for. If you pay for junk, it is just what you asked for, but if you ask quality, you will get it. I had an experience supervising a huge Chinese diesel engine Trucks for delivery service here in México and believe me they performed great, nevertheless what we had to fight with was with the prejudice against the trucks because they came from China. This situation caused a lot of problems with the drivers. We tested the Trucks in some places where the drivers did not know where came from the trucks and the result was amazing. These particular fleets performed quite well, then; yes it is totally true what you are saying.
In my personal experience with Chinese manufacturers, they will print anything you like on a product. For example, some years ago my company sold a lot of CCTV cameras. The best resolution of the day was 540tvl. We asked them to supply a higher resolution of 680tvl. Within two weeks we received our new 680tvl cameras. Or were they? No, they had simply changed the specifications written in the manual.
My personal favourite was one of those large 9V cells for vintage radios. I had a cheap one that lasted no time at all and was suspiciously light, so I hacked it open and and imagine my surprise when inside I found: Six unlabelled AA zinc chloride cells, soldered together in the most amateur fashion, then sellotaped together, and the rest of the space inside filled with scrunched up Chinese newspaper! I really wish I made a video of it, it blew my socks off. The brand was something like "Ultrapower" - I forget now though.
They were AAAA cells (not AA, and even thinner than AAA), and this is one way of normal construction of 9V (6F22/PP3) batteries. Except for chinese newspaper, of course ;) Look here: en.wikipedia.org/wiki/Nine-volt_battery
Oh, you're not being fair. Sure, you got 500mAH out of it ... but if it's so badly made that it dies after 20 charging cycles? Voila! The rated lifetime charge of the device = 9900mAH :)
Thank you for sharing this. I have a few 8400 mAh batteries that I purchased in bulk packaging for my flashlights. I knew immediately that they were discharging far less than labeled. I have wondered about this for a while now and your video confirms my suspicion. Mine are also from China and I purchased them via eBay.
I think the Chinese like to stick an extra nought on the end of so much of the cheap tat they sell. One useful way to check is to buy a plug-in usb charging monitor. I bought one on eBay which measures and records voltage and every milliamp of input. It also times the charge. So if you buy a usb battery charger you can check voltage (in and out) actual stored capacity and output, and there's a reset button. The 'blue' one - only £2.44 www.ebay.co.uk/itm/USB-Charger-Doctor-Voltage-Current-Meter-Mobile-Battery-Tester-Power-Detector-F7-/322111269872?var=&hash=item4aff53ebf0:m:m4zgSQzfGk8oEhWYlhyMxxw
Well, the sad thing is, most people don't know the difference between mAh and mWh, but even then it's still a lie, because at 3.7V it should be a 2675 mAh battery
It'll be interesting how high they manage to go with lithium batteries... there's some interesting research in the works at the moment like nano engineering the anode and cathodes as well as using graphene in the place of graphite, some of the research could also be translated over Sodium-ion batteries which have a higher energy density and work in roughly the same voltage range but the cycle life is really low (I think I read it could be fixed with nano engineered membranes that hold the anode/cathode together to prevent it breaking up due to its expansion during cycling)
There's a lot of talk in recent years about breakthoughs, nano technology, the use of different new and exciting materials........but with no results sofar. As the worlds supply of lithium is quite limited science needs to come up with something.
Doesn't appear to be any significant constraints on the supply of lithium vs. demand. Remember also that Lithium is not used in its raw metal form. This was found to be too dangerous. It's used as a component of the anode and also in the electrolyte. Significantly, the quantities of Lithium in the universe thus far detected are substantially less than the "big bang" theory has predicted. The "one to watch" is Sodium ion cells. Has some interesting potential.
Nico Meier it's not that there isn't any breakthroughs, it's just that it takes allot of time and money to implement new technology and research into mass produced batteries
Seven years on and I just got scammed ... on amazon no less. But at least they removed it from their offers and refunded me. My battery is almost identical ... just a different brand - eoaneoe - but almost identical packaging, even the same colour and font! Thank you for this video, has passed the test of time!
A this moment largest REAL capacity of 18650 is 3400mAh (Panasonic NCR18650B). Slightly below that we can find LG HG2 and Samsung 30Q (3000mAh). They have 400mAh less but de difference is also in maximum safe discharge rate. LG and Samsung have lots higher than Pansaonic. In my opinion if anyone need some 18650 batteries should buy: Sony, Samsung, Sanyo, LG, Panasonic. Only this brands. But have to remember that all of this brands have lots of different models.
DjVirusPL the Panasonic might have the largest capacity but it's also dangerous for vaping I heard because it doesn't have a high amperage output. it does continuous 4 amps. well the LG H2 will do 20 to 30 amps continuous draw. at least when I buy 18650s that what I am buying for. so for my uses LG and Samsung batteries are the best. if I used the Panasonic one in my vape It would probably blow it up in my hand or face
The Panasonic is a C2 3400 3250mAh cell. This means it can discharge continuous at 6.7A. The HG2 is C6 3000mAh capable of 18A continuous. Both cells can be burst to higher discharge currents.
Tom Donnelly thank you for correcting me. yes when I buy batteries for my vape I'm double checking the output. triple checking it. I don't want my face blown off. these 18650s are dangerous if you don't know about them. they are powerful angry little batteries
Yes.. IATA regulations which were significantly strengthened after MH370. However here in the UK, they've been imposed by the regular surface mail state postal delivery service, the Royal Mail. (is your mail royal?). However packages clearly marked Li-ion are delivered from Chinese sources, here in the UK. Moreover, the UK/EU cut a postal end-delivery charge that means a Chinese business can deliver (say) a cell here in the UK for just 99p (75c) including the price of the (fake) product itself. If I were allowed to send it, it would cost me "Small Parcel" rates of £2.45 plus the price of the product. The UK Royal Mail is subsidising Chinese businesses at the expense of UK businesses.
A good friend of mine worked on the Royal Mail IT systems and worked in the international shipping rates calculator for their internal systems. He indicated it could be one of two things: 1. Negotiations conducted at very high levels may have secured a break in import regulations in China in exchange for subsidized inbound forwarding. Kicking the small entrepreneur in Europe may have been a sacrifice to get import tariffs lowered in a broad sector such as Automobiles. 2. PRC government pays a lump sum to EU postal services to secure flat low rate to keep exports high that the EU post services aare only too willing to take to sweat their assets. If it's (1), it seems egregious giving a country with such a high competitive advantage, yet more of an advantage. IF it's (2), then the postal services are robbing Peter to pay Paul.
Often the rules for businesses are different than for the general public. I'm not saying it's right. I'm just saying it's true. I guess they feel like businesses can be controlled to use proper handling and packaging methods. Again, not agreeing, just hypothesizing. Anyway, great video and thanks for exposing the fraud. Cheers
+Raven Precept That 007 license to kill is a stupid thing in the 007 movies Could bond walk up to a UK police man and just kill them? No We all know if bond was arrested in another country for murder is "License to Kill" is meaningless. But this is movie logic
2:04 Ah, i remember the days of watching Exploding Pat and his badly singed cat on the TV as a kid... Exploding Pat, Exploding Pat, Exploding Pat and his badly singed cat. Carrying lithium batteries, when one got rather angry. That poor old cat will never grow that hair back.
I buy these batteries off eBay, test them, and if they don''t meet the specs, I get a full refund from the seller. It's against eBay policy to sell something that doesn't match the description, and you get a full refund, no questions asked. Most of the time you get to keep the battery, especially if it is from China. If enough people did this, the Chinese would have to stop lying about the capacity.
I bought some of the ones that clamed the 9800mah and I got them and they were only 800 so I looked back at the link in eBay to find out in the description the 9800mah was the model # not the amount of power so I contacted the seller and eBay and got a full refund and was able to keep the batteries " because there not worth crap " because he was scamming
If you want a source of cheap 18650 cells just buy cheap laptop batteries from eBay... it's possible to get 9-cell batteries for about £10, and while these cells won't be the best quality, they do generally meet their 2200mAh specification. Why it doesn't seem possible to buy these separately I have no idea.
This does help greatly. I've only recently begun using an 18650 in a flashlight that was gifted to me. And that person said to get a 4000 mah battery. I got curious and found your video. Thank you.
You said it right: at less than 10% of rated capacity, this is a total scam! He should send the cell back, and tell them to send him one that can sustain a 1A load, for ~10 hours.
you should charge it to 4.2V yet you end at 4.1V; this kind of battery (any one with doubtful spec） seems listed with discharged at 2.5V, and you end it at 3V that indeed a normal threshold. 2.5v ending is a trick for those mfg. some may charge it to 4.3v+ even it is not LiHV.
The Li-Ion setting on these analyzers prematurely ends the charge at 4.1V and prematurely ends the discharge at 3.1V. If you change it to Li-Po Setting then it goes to the full 4.2V and recommended 3.0V. If you use the Ni-Cd or Ni-MH mode on discharge (after a full 4.2V charge) you can set the end point to whatever you want - in this case 2.5V - and get the most accurate capacity reading. Not that it will be anywhere near 10Ah.
Many thanks for the video. It is funny how AliExpress now has offers of GTF 18650 Li-Ion *12000 mAh* batteries. It is getting better and better clearly. The seller is honest enough to inform that the color of battery might be slightly different than pictured. Nothing about capacity different than advertised, though :)
I just got through making a video about these myself, absolutely farcical claims, and ebay seem either unwilling or unable to do anything about it, I presume amazon is riddled with them too! Good video, cheers for making and posting!
Amazon is no guarantee - I bought a phone via Amazon and it turned out to be 'Amazon Marketplace', which turns out to have no customer protection whatsoever, which was what the seller wanted. Watch out for that.
great review, I use Samsung from a UK supplier and I done a test myself with a 3000mah 18650 Samsung thru a lesser powerful led torch I own, and from 4.20v to when I switched it off at 3.84v lasted 2h51m The same battery '9900mah' lasted 43m minutes and the voltage was 3.53v with inconsistent flickering light, and quite a lot of battery heat build up. My advice is leave them in salt water outside away from view until you can dispose them at a recycling centre, I also question their safety while left in a proper plastic container! I saw a video of someone carefully taking one apart, and inside is the crappiest uninsulated tiniest battery you've ever seen, honestly these are a bloody danger, and ebay needs to tighten it's selling laws!
Great and professional video review for the authenticity of the product also a big point rised up for the UK postage service and regulations for the import electronic device items ..!! Great video with a solid base information provided. Thanks for sharing.
Achraf Almouloudi True, i have bought new "reliable" 18650's and some of them didn't go beyond 4.1 v. I think it has something to do with "shelf life". Unused but to long in the shops!
or maybe they are used batteries. They just refurbish them and sell them as brand new. It would be interesting to see how repeatable is that capasity among a few and also the esr because if you pay attention the voltage dropped a lot for a 1A load
Mister Hat tiny cells have higher internal resistance because they are tiny hence less contact area. size * quality / wear = capasity (more or less) A brand new 1000mah AAA nimh baterry will have the same resistance as a worn 2500mah AA one that is dying at 1000mah on the discharge test. The resistance causes the voltage to drop, once you reach the cut off voltage you cant draw more current at the same rate. In theory you can still draw a lot more from that worn AA at a lower rate, so it would have more energy than the new AAA but you cant at the rate the thing you were powering requires so in all practical sense, its worthless. Unless you shuffle your batteries from thing to thing when they "die" to drain that extra power that's left they are as good as dead and needing to be recharged.
Surprisingly, they are still selling these today on Amazon. I thought the capacity was "exaggerated" but I had no idea how big a lie they were willing to tell! Thanks 7 years later.
The best I've ever seen are 3400 mAh so anything over about 3500 is fake. A simple test is to check the weight: the fakes weigh around 35g (or less), genuine high capacity cells are around 47-50g
I agree. The weight of the most blatant fakes is considerably less. I've come to the conclusion that the chemistry tops out at 3400mAh in the 18650 form factor. If I see anything higher, it's a fake.
Claim on EBay... The seller is responsible for selling the product and if found not to be as advertised that it is represented to be, then you should seek a proper refund.
Best part of the free batteries process is that it is sustainable in a way since most people who order them do not make claims since they still can get about 1000mAh out of them.
thank you found this video very usefull would love more..i am currently looking for these batteries to replace faulty cells on ebike any advice, videos, would be very appreciated im sure as many viewers have ebikes and are fed up been ripped off by expensive low quality replacement batteries on ebay?so not much choice or alternatives...many thanks.... well presented,very well explained and factual...keep up good work..
Tony .. for e-bikes, the 3400mAh Panasonic NCR18650B would be my recommendation. If you have a very powerful motor, then try the 3000mAh LG HG2 which has a C6 rating.
***** I have a battery charger that can test capacity, and every cell I have bought from imrbatteries has been great. LG, Sanyo, and Samsung are all great cell manufactures.
Reminds me of the way car audio amps were advertised years ago...circa 80's and 90's. Most quality amps were rated in RMS (root mean squared) at a listed percent of harmonic distortion (THD) . The user making the determination if the THD was acceptable for his application . That stated, there was another rating called IPP or Instantaneous peak power that was used a lot by low quality amps...It would sometimes go like this . 100 watt rms @ ,005 THD ... then 1200 watt IPP but rare would you ever see the THD of the last measurement.. I always dubbed it Imaginary Peak Power.. cuz that was exactly what it was..
Appreciate the informative video and you've got your thumbs up. I've been on eBay before and during Meg's Raine. EBay is only a conduit/avenue, they do not sell anything tangible and they are not legally liable. They are a balance of consumers getting ripped and being satisfied more so than any other entity.
jordanadam87 Yes; even the steel spring used in this holder is less than ideal. But 1A isn't so much, it will do for this test. High-end chargers have separate sensing wires going right to the cell terminals to eliminate the influence of any additional resistance.
I had bought these ones too and then recognized their extremely low capacity. So I gave this chinese Ebay seller a minus feedback in Ebay for selling such a crap. The result was that I got full refunding from the seller.
From the voltage drop on the discharge you can immediately tell that it's not capable of driving that load. Set the discharge to 100mA and you'll get something like a usable 1000mAh out of it. Still nowhere close to the sticker though. And just of note, Lithium batteries are normally shipped at their 3.6 Volt storage voltage and largely inert. So it's a bit much to hypothesize as to the cause of a plane that went missing, that's just scare mongering. The fully charged batteries in the passengers luggage, those carry far more risk then cargo shipping of batteries.
Going overboard with a ban is scare mongering. Flying always involves the risks of crashing and burning but there are still aircraft carriers arround that are willing to take the risk. Are they stupid to take that enormous amount of liability risks? There are obviously safety standards involved.
It's an insurance issue. I tried to get insurance to sell Li-ion cells. I may as well have asked for insurance to sell 99c Chinese Smoke Alarms. My broker tried many insurers. They were only interested if the risk could be passed back to the manufacturer (in my case Panasonic). All the big names refuse to sell single cells direct to the public for the same reason. They only sell to battery manufacturers (who weld them together for notebooks, power tools, ebikes) and they have to sign an indemnification contract. Some battery manufacturers sell individual cells into the grey market. That's the only reason you can purchase new LG, Panasonic, Sony or Samsung 18650s.
reliability is more important... would you buy a water heater that claimed 90 celsius when it could only heat to 4.5 celsuis but cost half as much? That's about the same ratio... nearly all Chinese products suck lol. Don't kid yourself - this is a battery that should be immediately thrown in the trash (or recycled). A single AA battery gives 1.5V at ~2000mAh, so 3 in a series costs about the same and gives more power.
王炳成 The things I buy from China are not among the set of unreliable items that I am referring to in my original post. Furthermore, what I buy from China comes with the quality I expect or it is immediately returned or discarded. I still stand beside what I said and I am willing to bet that you have the same point of view.
You can mail li-po batteries in the US, but you have to label them as a specific type of hazard. Not sure about UPS, though we've bought cordless drill lipos and shipped the UPS, so its probably the same.
seems that if you want to increase the capacity at this same size, you have to make the anode/catode thinner, so you will have to drain amperage slower and also risk to set it on fire while charging/discharging (like some overcrowdfed phones happen).
You can get significantly more power if you don't drain continuously. Most spec charts show continuous drain at a fixed current. For example here is my own brand's performance: radenite.com/specs/RAD18650-34-NFC2.pdf. This is not usually how the cells are deployed when in use and is punishing on the chemistry. If, however, I pause the drain for at least 10 minutes every (say) 10 minutes, the cell chemistry has a regenerative affect that allows the voltage to pull back up again. This is true of many cell chemistries, not just Li-ion ICR.
sounds right, but sadly we can`t use our gadgets like this, imagine using a flashlight in the woods for 10 minutes than wait 10 minutes in the dark and again...the best next thing we can do is to have much more power than we drain, so that the losses will be small, like the new flashlights with 2 or 4 of the 18650 cells.
I brought two torches that came with a separate charger and one make was called Probe Shinny and the other make was Ultra Fire. I've since found out that these batteries are mini pipe bombs and can explode at any time while charging or discharging inside the torches, make the torch "s" in effect mini time bombs. The chargers are also shoddily made and dangerous, the plugs have no fuses and no rubber insulators on the any of the main or neutral terminals. Hope this helps others to be safe and a big thanks to you Tom Donnally
The best true capacity 18650 currently is 3,500mah by Sanyo/Panasonic 18650GA rated at 10A. Anything more than that are fake. If you aren't using an Aspire, LG, Panasonic, Samsung, Sanyo, or Sony battery chances are you are using what is called a rewrap.
***** There are many fakes out there and there is no way to differentiate them just from looking at the pictures provided from the sellers. I would suggest you only buy from reputable sellers. You can try fasttech.com or gearbest.com and both of them selling original battery
hey Tom, thanks for saving me from buying this crappy GTF batteries, on another hand ... did you check the battery "Skywolfeye" that came with your flash light? does that one deliver the 5800 mah they claim? thanks so much and cheers from México City :)
Battery buying is a bit of a minefield, especially if you don't know much about the subject. I know a fair amount but with so many sellers and so many battery manufacturers, even with some expertise it can be quite hard to sort decent value from total garbage. Your average man of the street has an even harder time. I am amazed that charlatans like trustfire, who have been selling mislabelled crap for many years, are still going though. You'd think people would learn that some names are just to be avoided.
People do learn that some names are to be avoided but then new people who have never bought one end up buying one. It isn't necessarily always the same people.
I really have enjoyed several of your videos. I do have a heart felt question as I can be inpatient. Has anyone ever asked you to "Get To The Point?" Thank You, you really do make some astonishing material.
Thank you so much for that demo. I suspected as much, but you've confirmed it. I think the max mAh you can get from an 18650 is 3500-3600 Thanks again! Danny AVKG "A Very Knife Guy" 🤗🔦👁️👍
After I watched your video an advertisement for those batteries on ebay popped up within your video window. $2.99 ea. Ebay has NO problem with blatant lies.
Hi. I, of course wondered about these too, thanks. Not sure why you charged to 4.1V instead of 4.2V? And why stop at 3.1V, not 2.5V or when the cell's protection shut it off? You'll get more than 513, but not much. Did the package state to customs it had Li-ion cells inside? I suspect they dropped the ball.
A while ago I bought 4 6000mAh batteries with a LED torch I bought, being $5 for the 4 it didn't bother me. I ended up getting a Foxnovo 4S charger a few months later and tested those batteries the mAh ratings were from 120-350. Seems as a general rule. Divide the rated/claimed capacity by 18 to get the true capacity
Helpful video. 6 years old. Well now they're selling them on eamazon as well. I'd love to see a video for some that are genuine and work so that I don't buy crap. It's 6 years later but if you could show maybe some brands that live up to the claim on the packaging that will be awesome.
This is why quality brand batteries are AUD$10+ and come close to their claims.The other thing I would add is you can feel the weight difference, cheap is light.
Thanks mate you have saved me a bundle.... I was looking at buying a few hundred 18650 batteries and found your video when searching reviews. Is there any particular brand or model that you would recommend? can you give me the details of the charger/discharge unit you use in the video so I can do some of my own testing?
SmallBlock351Cleveland ....... of course I wouldn't be crazy enough to buy any of these .... BUT the ones that came into my possession recently clocked in at about 900mAh. Wish I'd seen this video before ....
True, you have to be careful of the brand of the battery. Stay clear with anything that has "fire". Nitecore, olight, orbitronic are some of the brands I trust.
Pretty sure OLight's 3600mAh cells are just 3500mAh cells. Samsung, LG, Sony, Sanyo, and Panasonic only make cells reaching 3500mAh, and they are the ones on the bleeding edge of battery technology.
What a video! Definitely helpful. I don’t have a pro charger/discharger such as yours. I suspected 9900 mAH was a “big lie” but I am curious about whether any of the battery makers are reporting the true life in mAH.
Mr. Donnelly ... Thank you for the well-explained, detailed investigation of the cell's indicated capacity. With all due respect, please consider this: We know that the deliverable mAh capacity is an inverse function of the discharge rate, so any test of capacity is sensitive to the discharge rate selected for the test. In your video, the selection of discharge rate gets short shrift, without, frankly, much to support it. As an alternative approximation, may I propose that you measure its capacity in the service for which it was submitted, i.e., at the discharge rate in the flashlight in which it was fitted and delivered to you. It should be a simple matter to measure the operating current when the flashlight in on, and then use that as the discharge rate for the test. I have no way to guess whether it will come anywhere close to 9900 mAh, and I have no personal interest in the product. But I do have the feeling that a discrepancy of 96% is a bit much to be explained only by considering the source, and a load resembling a few LEDs might be a fairer test of the product than 1 Ampere was.
+Al Cohen It wasn't delivered with the flashlight. If anything, 1A is a very benign discharge rate for a li-ion 18650. The C rate is only 0.1 against the *stated* capacity claim. I find all this nit-picking with the test quite astonishing with such an egregious marketing claim that seeks to defraud so many who are often unable (or unaware of how) to check the veracity.
Obvious defense mechanism (ie. cheap insults) aside, you will have a better idea of my contribution to the "sum of knowledge" after I die, if you have the time to spare and watch me as I live my life and shit on the words of people like you. 8-O
Tom what equipment is displayed in your video, the device to charge and discharge and the interesting looking tech to the lower left of the keyboard. thanks.
I've added a link in description to the SkyRC B6. The other thing is a "smart meter". About 20 quid on eBay. The OLED display is linked to a clamp-meter that's locked around the mains cable into the house. It uses the Hall Effect to determine the current that the house is consuming at any one time. (more info on clamp meters here: ua-cam.com/video/BzDf1HIE3v8/v-deo.html ) The unit has a micro-controller whereby you can set cost/kWh and different tariffs. But at its most basic, it simply multiplies amps x 240V to give you an instantaneous demand reading while maintaining cumulatives over day, week, month etc. for power consumption and cost. It's a constant reminder of how wasteful my kids are.
I bought same battry off ebay. Mine says GIF on side but is exactly like yours. I have no way to test it so thanks for your video. Mine doesnt last long in flashlight like aI thought it should.
It's interesting to note that most manufacturers shy away from publishing the C number. You'd have thought that would be a selling point where it is a higher value for the sub-ohm use.
What kind of connectors are you using to charge and discharge the 18650 batteries? I noticed your using alligator clips, but to which connector? Did you make that connector yourself, or do they sell it for this charger? I also have a sky RC charger myself.
I've got a couple of batteries that look identical to those 9900mAh rated ones you show here. I just ran a load test at 300mA, and got 1350mAh with voltage drop to 2.5V.
I think the maximum they can reach in that size is 3500. Did you do the same check with 5800 battery? I suspect is less than half but not as low as 500.
A very quick way to determine the capacity of your 18650s is as follows; The energy density of lithium ion is 170Wh/Kg, or .17 Wh per gram. First - determine the Wh: weight of battery (g) * .17 = x.xx Wh Then calculate the mAh: Wh * 1000/V= mAh
Thank you for this video.. I'm new to 18650 rechargeable batteries so excuse the maybe silly question i'm about to ask. What does or is the difference between 3200mah or a 3600mah or 3700mah? Does it last longer the more mah? and does it take longer to charge the higher the mah? and is there anything else? I thank you in advance for clarification? Peace!
@@musmustafa7900 Also, it seems that with 18650 Lion cells, the higher the capacity, the lower the continuous max amps. Something else to pay attention to when your buying. It doesn't seem true across the board, but it does seem like a pretty consistent trend. I'm not sure why he said vape devices pull 2 amps. Mine currently, with a modest coil setup at .25ohm pulls 9.5A at 24watts.
@@crazytom I'm not sure why you said vape devices pull 2 amps. Mine currently, with a very modest coil setup at .25ohm pulls 9.5A at 24watts. I've run across a lot of posts in vape forums where they say to buy the highest amps you can at a capacity you want to live with for safety reasons, but anything less than 10-15A continuous doesn't seem to be useful for vape use.
For discharge you should test at 100mA, it's quite standard for the capacity rate on label. It will last longer than your test. With 1 A discharge any small battery like this will not last long.
perhaps you are supposed to turn it around so it is 0066mah not 9900...
Yeh, maybe its for the Australian market where they're all upside down! ;-)
They forgot to put a decimal there. It should read 99.00 mah.
I believe the life cycle is 9900mAh before the battery die.
+IRFZ44 is it one cycle capacity?
This Chinese battery they need to be banned from Ebay
File a claim with eBay help stop the fraud.
Well, 9900 mAh will be very true if you buy one of these Chinese Amp meters. Hehe
yep
In China almost everything is Made in China.
+Electrodude ok
+Art O You are absolutely right ! Of the China products you will get, what you paid for. If you pay for junk, it is just what you asked for, but if you ask quality, you will get it. I had an experience supervising a huge Chinese diesel engine Trucks for delivery service here in México and believe me they performed great, nevertheless what we had to fight with was with the prejudice against the trucks because they came from China. This situation caused a lot of problems with the drivers. We tested the Trucks in some places where the drivers did not know where came from the trucks and the result was amazing. These particular fleets performed quite well, then; yes it is totally true what you are saying.
Patrick jonhson
Rule nr. 1 - Never never ever discuss with flaties!
In my personal experience with Chinese manufacturers, they will print anything you like on a product. For example, some years ago my company sold a lot of CCTV cameras. The best resolution of the day was 540tvl. We asked them to supply a higher resolution of 680tvl. Within two weeks we received our new 680tvl cameras. Or were they? No, they had simply changed the specifications written in the manual.
My personal favourite was one of those large 9V cells for vintage radios. I had a cheap one that lasted no time at all and was suspiciously light, so I hacked it open and and imagine my surprise when inside I found:
Six unlabelled AA zinc chloride cells, soldered together in the most amateur fashion, then sellotaped together, and the rest of the space inside filled with scrunched up Chinese newspaper! I really wish I made a video of it, it blew my socks off. The brand was something like "Ultrapower" - I forget now though.
Sand would probably be better - it doesn't burn.
Indeed they are.
9V batteries always consist of six 1.5V cells in series, so that shouldn't be a surprise.
I use the the PP9 battery carcass with a 6x AA battery holder inside and cheap alkaline AAs. Works fine.
They were AAAA cells (not AA, and even thinner than AAA), and this is one way of normal construction of 9V (6F22/PP3) batteries. Except for chinese newspaper, of course ;) Look here: en.wikipedia.org/wiki/Nine-volt_battery
Oh, you're not being fair. Sure, you got 500mAH out of it ... but if it's so badly made that it dies after 20 charging cycles? Voila! The rated lifetime charge of the device = 9900mAH :)
Daniel Budney Goddammit! Have you been thinking again?
Thank you for sharing this. I have a few 8400 mAh batteries that I purchased in bulk packaging for my flashlights. I knew immediately that they were discharging far less than labeled. I have wondered about this for a while now and your video confirms my suspicion. Mine are also from China and I purchased them via eBay.
9900mAh?! 'GTF'O of here!
Haha! I was going to say....Must be a typo...."They forgot the O at the end of GTF".
Yah, like "TrustFire" or "GoodBuy" X'DDD
I think the Chinese like to stick an extra nought on the end of so much of the cheap tat they sell. One useful way to check is to buy a plug-in usb charging monitor. I bought one on eBay which measures and records voltage and every milliamp of input. It also times the charge. So if you buy a usb battery charger you can check voltage (in and out) actual stored capacity and output, and there's a reset button. The 'blue' one - only £2.44
www.ebay.co.uk/itm/USB-Charger-Doctor-Voltage-Current-Meter-Mobile-Battery-Tester-Power-Detector-F7-/322111269872?var=&hash=item4aff53ebf0:m:m4zgSQzfGk8oEhWYlhyMxxw
Edward P Campbell Like the also believe putting "High Quality" on something makes a cheap piece of tat into a good item 😄
Well, the sad thing is, most people don't know the difference between mAh and mWh, but even then it's still a lie, because at 3.7V it should be a 2675 mAh battery
Highest possible capacity in a 18650 is currently 3.600mAh.
Anything above that is nonsense because just not possible.
It'll be interesting how high they manage to go with lithium batteries... there's some interesting research in the works at the moment like nano engineering the anode and cathodes as well as using graphene in the place of graphite, some of the research could also be translated over Sodium-ion batteries which have a higher energy density and work in roughly the same voltage range but the cycle life is really low (I think I read it could be fixed with nano engineered membranes that hold the anode/cathode together to prevent it breaking up due to its expansion during cycling)
There's a lot of talk in recent years about breakthoughs, nano technology, the use of different new and exciting materials........but with no results sofar. As the worlds supply of lithium is quite limited science needs to come up with something.
Doesn't appear to be any significant constraints on the supply of lithium vs. demand. Remember also that Lithium is not used in its raw metal form. This was found to be too dangerous. It's used as a component of the anode and also in the electrolyte.
Significantly, the quantities of Lithium in the universe thus far detected are substantially less than the "big bang" theory has predicted.
The "one to watch" is Sodium ion cells. Has some interesting potential.
Nico Meier it's not that there isn't any breakthroughs, it's just that it takes allot of time and money to implement new technology and research into mass produced batteries
Nothing beats LG's, that i know of... anyone?
Seven years on and I just got scammed ... on amazon no less. But at least they removed it from their offers and refunded me. My battery is almost identical ... just a different brand - eoaneoe - but almost identical packaging, even the same colour and font! Thank you for this video, has passed the test of time!
A this moment largest REAL capacity of 18650 is 3400mAh (Panasonic NCR18650B). Slightly below that we can find LG HG2 and Samsung 30Q (3000mAh). They have 400mAh less but de difference is also in maximum safe discharge rate. LG and Samsung have lots higher than Pansaonic.
In my opinion if anyone need some 18650 batteries should buy: Sony, Samsung, Sanyo, LG, Panasonic. Only this brands. But have to remember that all of this brands have lots of different models.
DjVirusPL the Panasonic might have the largest capacity but it's also dangerous for vaping I heard because it doesn't have a high amperage output. it does continuous 4 amps. well the LG H2 will do 20 to 30 amps continuous draw. at least when I buy 18650s that what I am buying for. so for my uses LG and Samsung batteries are the best. if I used the Panasonic one in my vape It would probably blow it up in my hand or face
The Panasonic is a C2 3400 3250mAh cell. This means it can discharge continuous at 6.7A. The HG2 is C6 3000mAh capable of 18A continuous. Both cells can be burst to higher discharge currents.
Tom Donnelly thank you for correcting me. yes when I buy batteries for my vape I'm double checking the output. triple checking it. I don't want my face blown off. these 18650s are dangerous if you don't know about them. they are powerful angry little batteries
What i just said? :)
"They have 400mAh less but de difference is also in maximum safe discharge rate. LG and Samsung have lots higher than Pansaonic."
For mechanic mods best are Samsung 25r
I'm sure somebody else has mentioned adding an 'O' after the 'GTF'...
Jah Rastafari No need it clearly has a GTF out rating of 9.9Ah, not a GTF out out rating.
Yes.. IATA regulations which were significantly strengthened after MH370.
However here in the UK, they've been imposed by the regular surface mail state postal delivery service, the Royal Mail. (is your mail royal?).
However packages clearly marked Li-ion are delivered from Chinese sources, here in the UK. Moreover, the UK/EU cut a postal end-delivery charge that means a Chinese business can deliver (say) a cell here in the UK for just 99p (75c) including the price of the (fake) product itself. If I were allowed to send it, it would cost me "Small Parcel" rates of £2.45 plus the price of the product.
The UK Royal Mail is subsidising Chinese businesses at the expense of UK businesses.
A good friend of mine worked on the Royal Mail IT systems and worked in the international shipping rates calculator for their internal systems. He indicated it could be one of two things:
1. Negotiations conducted at very high levels may have secured a break in import regulations in China in exchange for subsidized inbound forwarding. Kicking the small entrepreneur in Europe may have been a sacrifice to get import tariffs lowered in a broad sector such as Automobiles.
2. PRC government pays a lump sum to EU postal services to secure flat low rate to keep exports high that the EU post services aare only too willing to take to sweat their assets.
If it's (1), it seems egregious giving a country with such a high competitive advantage, yet more of an advantage.
IF it's (2), then the postal services are robbing Peter to pay Paul.
You should test the one in your flashlight this way as well, | am sure I'm not the only one that is curious?...
Often the rules for businesses are different than for the general public. I'm not saying it's right. I'm just saying it's true. I guess they feel like businesses can be controlled to use proper handling and packaging methods. Again, not agreeing, just hypothesizing. Anyway, great video and thanks for exposing the fraud. Cheers
So how do you send phones, tablets or any other device that has a Li-ion battery in it for warranty purposes?
+Raven Precept
That 007 license to kill is a stupid thing in the 007 movies
Could bond walk up to a UK police man and just kill them?
No
We all know if bond was arrested in another country for murder is "License to Kill" is meaningless.
But this is movie logic
2:04 Ah, i remember the days of watching Exploding Pat and his badly singed cat on the TV as a kid...
Exploding Pat, Exploding Pat,
Exploding Pat and his badly singed cat.
Carrying lithium batteries, when one got rather angry.
That poor old cat will never grow that hair back.
I buy these batteries off eBay, test them, and if they don''t meet the specs, I get a full refund from the seller. It's against eBay policy to sell something that doesn't match the description, and you get a full refund, no questions asked. Most of the time you get to keep the battery, especially if it is from China. If enough people did this, the Chinese would have to stop lying about the capacity.
I bought some of the ones that clamed the 9800mah and I got them and they were only 800 so I looked back at the link in eBay to find out in the description the 9800mah was the model # not the amount of power so I contacted the seller and eBay and got a full refund and was able to keep the batteries " because there not worth crap " because he was scamming
So, this is the way how you get free stuff from China?!
Thank you, this was actually very helpful. I was aware of fake listings on eBay, but this has definitely made me more weary of sellers based in China.
If you want a source of cheap 18650 cells just buy cheap laptop batteries from eBay... it's possible to get 9-cell batteries for about £10, and while these cells won't be the best quality, they do generally meet their 2200mAh specification. Why it doesn't seem possible to buy these separately I have no idea.
This does help greatly. I've only recently begun using an 18650 in a flashlight that was gifted to me. And that person said to get a 4000 mah battery. I got curious and found your video. Thank you.
GTF? More like GTFO.
Haha very fitting indeed :D
exactly what I was thinking! Somebody is getting a laugh!
LMAO good one
Damn! You beat me to it! :)
You said it right: at less than 10% of rated capacity, this is a total scam! He should send the cell back, and tell them to send him one that can sustain a 1A load, for ~10 hours.
Wow, more like GTFo. Thank you for this review. Saved me a ton of headache 👍👍
you should charge it to 4.2V yet you end at 4.1V; this kind of battery (any one with doubtful spec） seems listed with discharged at 2.5V, and you end it at 3V that indeed a normal threshold. 2.5v ending is a trick for those mfg. some may charge it to 4.3v+ even it is not LiHV.
The Li-Ion setting on these analyzers prematurely ends the charge at 4.1V and prematurely ends the discharge at 3.1V.
If you change it to Li-Po Setting then it goes to the full 4.2V and recommended 3.0V.
If you use the Ni-Cd or Ni-MH mode on discharge (after a full 4.2V charge) you can set the end point to whatever you want - in this case 2.5V - and get the most accurate capacity reading. Not that it will be anywhere near 10Ah.
Many thanks for the video. It is funny how AliExpress now has offers of GTF 18650 Li-Ion *12000 mAh* batteries. It is getting better and better clearly. The seller is honest enough to inform that the color of battery might be slightly different than pictured. Nothing about capacity different than advertised, though :)
:)
I just got through making a video about these myself, absolutely farcical claims, and ebay seem either unwilling or unable to do anything about it, I presume amazon is riddled with them too!
Good video, cheers for making and posting!
Amazon is no guarantee - I bought a phone via Amazon and it turned out to be 'Amazon Marketplace', which turns out to have no customer protection whatsoever, which was what the seller wanted.
Watch out for that.
great review, I use Samsung from a UK supplier and I done a test myself with a 3000mah 18650 Samsung thru a lesser powerful led torch I own, and from 4.20v to when I switched it off at 3.84v lasted 2h51m
The same battery '9900mah' lasted 43m minutes and the voltage was 3.53v with inconsistent flickering light, and quite a lot of battery heat build up.
My advice is leave them in salt water outside away from view until you can dispose them at a recycling centre, I also question their safety while left in a proper plastic container!
I saw a video of someone carefully taking one apart, and inside is the crappiest uninsulated tiniest battery you've ever seen, honestly these are a bloody danger, and ebay needs to tighten it's selling laws!
Cool video. Just FYI, you might get a better result on the time lapse if you switch to manual focus.
Great and professional video review for the authenticity of the product also a big point rised up for the UK postage service and regulations for the import electronic device items ..!!
Great video with a solid base information provided.
Thanks for sharing.
Why don't you charge it to 4.2 volts and then discharge to 2.5 volts to get the maximum capacity?
Even if he discharged the cell to that point, it still wouldn't get to 1000mah. And it would likely damage the cell pulling the voltage that far down.
Yes, i know that these cheap chinese bateries are crap. but if you measure capacity you should charge it to 4.2 volts
Niels Daemen The charger has charged it to the maximum it can take, not all batteries get to 4.2v when fully charged.
Niels Daemen Yeah you get it to 4.2 volt but with only 500 mAh power! LOL.
Achraf Almouloudi True, i have bought new "reliable" 18650's and some of them didn't go beyond 4.1 v. I think it has something to do with "shelf life". Unused but to long in the shops!
glad to hear you have the same gripes we, in the US, have!
I suspect that "bettery" is mostly full of powder or some cheap packer and it has a little 10400 or thereabout sized cell inside it.
or maybe they are used batteries. They just refurbish them and sell them as brand new. It would be interesting to see how repeatable is that capasity among a few and also the esr because if you pay attention the voltage dropped a lot for a 1A load
Laharl Krichevskoy ,
NO ! Is genuine UltraFrie battery. Very good! Happiness customer!
+Laharl Krichevskoy That voltage drop could also indicate a tiny cell inside of it too.
Mister Hat
tiny cells have higher internal resistance because they are tiny hence less contact area.
size * quality / wear = capasity (more or less)
A brand new 1000mah AAA nimh baterry will have the same resistance as a worn 2500mah AA one that is dying at 1000mah on the discharge test. The resistance causes the voltage to drop, once you reach the cut off voltage you cant draw more current at the same rate. In theory you can still draw a lot more from that worn AA at a lower rate, so it would have more energy than the new AAA but you cant at the rate the thing you were powering requires so in all practical sense, its worthless.
Unless you shuffle your batteries from thing to thing when they "die" to drain that extra power that's left they are as good as dead and needing to be recharged.
Laharl Krichevskoy taken off from laptop battery packs more likely. check spot weld remnants.
Surprisingly, they are still selling these today on Amazon. I thought the capacity was "exaggerated" but I had no idea how big a lie they were willing to tell! Thanks 7 years later.
The best I've ever seen are 3400 mAh so anything over about 3500 is fake. A simple test is to check the weight: the fakes weigh around 35g (or less), genuine high capacity cells are around 47-50g
I agree. The weight of the most blatant fakes is considerably less. I've come to the conclusion that the chemistry tops out at 3400mAh in the 18650 form factor. If I see anything higher, it's a fake.
So you can get free 500 mah lipos? As can put in paypal claim as fraud!
Claim on EBay... The seller is responsible for selling the product and if found not to be as advertised that it is represented to be, then you should seek a proper refund.
Best part of the free batteries process is that it is sustainable in a way since most people who order them do not make claims since they still can get about 1000mAh out of them.
+Tom Donnelly and Totik
Olight have 18650 at 3600mAh.
Wow, that helped a ton to know more about those batteries. Thanks very much for doing this video.
they should be called "GTFO"
Great vid, had to chuckle at the "vaping devices demand around 2 amps" comment, some demand more like 20+
thank you found this video very usefull would love more..i am currently looking for these batteries to replace faulty cells on ebike
any advice, videos, would be very appreciated im sure as many viewers have ebikes and are fed up been ripped off by expensive low quality replacement batteries on ebay?so not much choice or alternatives...many thanks.... well presented,very well explained and factual...keep up good work..
Tony .. for e-bikes, the 3400mAh Panasonic NCR18650B would be my recommendation. If you have a very powerful motor, then try the 3000mAh LG HG2 which has a C6 rating.
imrbatteries dot com sells hundred's of authentic cells, they sell a lot of the re branded cells too if you wan't those.
***** If you buy a good brand, from a good retailer you don't need to test anything. The cell will preform as advertised
***** I have a battery charger that can test capacity, and every cell I have bought from imrbatteries has been great. LG, Sanyo, and Samsung are all great cell manufactures.
***** I'm no expert but LG's got some great cheap cells. Just go to imrbatteries . com and look at all their LG cells.
Great video! Thanks for giving us all a heads up before purchasing (or not purchasing).
Oerhaps they just omitted the decimal point and it's supposed to be 990.0...? (grin!)
Reminds me of the way car audio amps were advertised years ago...circa 80's and 90's. Most quality amps were rated in RMS (root mean squared) at a listed percent of harmonic distortion (THD) . The user making the determination if the THD was acceptable for his application .
That stated, there was another rating called IPP or Instantaneous peak power that was used a lot by low quality amps...It would sometimes go like this .
100 watt rms @ ,005 THD ... then 1200 watt IPP but rare would you ever see the THD of the last measurement..
I always dubbed it Imaginary Peak Power.. cuz that was exactly what it was..
@@gittarpikk ok?
Appreciate the informative video and you've got your thumbs up.
I've been on eBay before and during Meg's Raine. EBay is only a conduit/avenue, they do not sell anything tangible and they are not legally liable. They are a balance of consumers getting ripped and being satisfied more so than any other entity.
ITS OVER 9000!!!!!!!!!!!!!!!
Why was it about 3.3 V at the beginning of the discharge?
Might me the battery type? I know LiPo batteries are higher than that fully charged since their storage charge is 3.85v
That's because this POS has such a high internal resistance that the 1A load made it drop from 4.1 to 3.3 instantly!
For me he has to small cables for this 18650 battery holder. He has big voltage drop on it with 1A.
jordanadam87
Yes; even the steel spring used in this holder is less than ideal. But 1A isn't so much, it will do for this test.
High-end chargers have separate sensing wires going right to the cell terminals to eliminate the influence of any additional resistance.
I had bought these ones too and then recognized their extremely low capacity. So I gave this chinese Ebay seller a minus feedback in Ebay for selling such a crap.
The result was that I got full refunding from the seller.
Thanks for your time, and info 😎👍👍
From the voltage drop on the discharge you can immediately tell that it's not capable of driving that load. Set the discharge to 100mA and you'll get something like a usable 1000mAh out of it. Still nowhere close to the sticker though.
And just of note, Lithium batteries are normally shipped at their 3.6 Volt storage voltage and largely inert. So it's a bit much to hypothesize as to the cause of a plane that went missing, that's just scare mongering. The fully charged batteries in the passengers luggage, those carry far more risk then cargo shipping of batteries.
Scare-mongering? Well IATA doesn't agree with you. Li-ion cells are now banned from being flown in quantities on commercial passenger flights.
even a battery at 3 volts that goes into thermal runaway can still cause a hell of alotta damage.
Going overboard with a ban is scare mongering. Flying always involves the risks of crashing and burning but there are still aircraft carriers arround that are willing to take the risk. Are they stupid to take that enormous amount of liability risks? There are obviously safety standards involved.
Off course they don't, since regulation is their "business." The purpouse of bureaucracies is to grow.
It's an insurance issue. I tried to get insurance to sell Li-ion cells. I may as well have asked for insurance to sell 99c Chinese Smoke Alarms. My broker tried many insurers. They were only interested if the risk could be passed back to the manufacturer (in my case Panasonic). All the big names refuse to sell single cells direct to the public for the same reason. They only sell to battery manufacturers (who weld them together for notebooks, power tools, ebikes) and they have to sign an indemnification contract. Some battery manufacturers sell individual cells into the grey market. That's the only reason you can purchase new LG, Panasonic, Sony or Samsung 18650s.
Saw those GTF batteries on Ali Express and I thought they we too good to be true... and they were!Thanks for a good video.
New to this channel. Nice video. Are you really suggesting someone in China is lying?
Imagine that a liar from China hahaha!! They are known for fake and low quality products and sometimes unsafe products.
Very droll
Good thing they are free (if you don't cont the time and some effort associated with filing a dispute)
well 500 mAh for 1€ is still kinda cheap isnt it?
reliability is more important... would you buy a water heater that claimed 90 celsius when it could only heat to 4.5 celsuis but cost half as much? That's about the same ratio... nearly all Chinese products suck lol. Don't kid yourself - this is a battery that should be immediately thrown in the trash (or recycled). A single AA battery gives 1.5V at ~2000mAh, so 3 in a series costs about the same and gives more power.
well but i would buy a water heater that claims it does 2000C but only does 100C :P
yeah but those 3 in series cant be recharged.
Czech you might wear something or use something made in China! You better not use and throw to trash
王炳成 The things I buy from China are not among the set of unreliable items that I am referring to in my original post. Furthermore, what I buy from China comes with the quality I expect or it is immediately returned or discarded. I still stand beside what I said and I am willing to bet that you have the same point of view.
Or let the kids suck on it. It might not be lead free!!!
You can mail li-po batteries in the US, but you have to label them as a specific type of hazard.
Not sure about UPS, though we've bought cordless drill lipos and shipped the UPS, so its probably the same.
most i`ve seen are 3400 mA ones, seems that at this size is hard to fit a bigger capacity .
Panasonic has an NCR19650G model that runs to 3600mAh but they're difficult to track down.
seems that if you want to increase the capacity at this same size, you have to make the anode/catode thinner, so you will have to drain amperage slower and also risk to set it on fire while charging/discharging (like some overcrowdfed phones happen).
You can get significantly more power if you don't drain continuously. Most spec charts show continuous drain at a fixed current. For example here is my own brand's performance: radenite.com/specs/RAD18650-34-NFC2.pdf. This is not usually how the cells are deployed when in use and is punishing on the chemistry.
If, however, I pause the drain for at least 10 minutes every (say) 10 minutes, the cell chemistry has a regenerative affect that allows the voltage to pull back up again. This is true of many cell chemistries, not just Li-ion ICR.
sounds right, but sadly we can`t use our gadgets like this, imagine using a flashlight in the woods for 10 minutes than wait 10 minutes in the dark and again...the best next thing we can do is to have much more power than we drain, so that the losses will be small, like the new flashlights with 2 or 4 of the 18650 cells.
I bet the 3400mAh are inflated. Really AA is only meant to be as big as 2 thousandish mAh .
I brought two torches that came with a separate charger and one make was called Probe Shinny and the other make was Ultra Fire. I've since found out that these batteries are mini pipe bombs and can explode at any time while charging or discharging inside the torches, make the torch "s" in effect mini time bombs. The chargers are also shoddily made and dangerous, the plugs have no fuses and no rubber insulators on the any of the main or neutral terminals. Hope this helps others to be safe and a big thanks to you Tom Donnally
The best true capacity 18650 currently is 3,500mah by Sanyo/Panasonic 18650GA rated at 10A.
Anything more than that are fake. If you aren't using an Aspire, LG, Panasonic, Samsung, Sanyo, or Sony battery chances are you are using what is called a rewrap.
Jay Alan or an mxjo
Jay Alan facts ^^^
Jay Alan Yep, and you won't be using them for long!
Coma White That's why you do your research in telling the difference between a fake and a real one.
***** There are many fakes out there and there is no way to differentiate them just from looking at the pictures provided from the sellers. I would suggest you only buy from reputable sellers. You can try fasttech.com or gearbest.com and both of them selling original battery
hey Tom, thanks for saving me from buying this crappy GTF batteries, on another hand ... did you check the battery "Skywolfeye" that came with your flash light? does that one deliver the 5800 mah they claim? thanks so much and cheers from México City :)
close enough.
“I don’t think postman are going to start exploding..” that caught me off guard, literally laughed out loud!
I can't believe how many people buy fake/re warped 18650's from non reputable vendors and expect to get anything near what was advertised.
Nyaaa! Yeah! People are SO gullible...
Battery buying is a bit of a minefield, especially if you don't know much about the subject. I know a fair amount but with so many sellers and so many battery manufacturers, even with some expertise it can be quite hard to sort decent value from total garbage. Your average man of the street has an even harder time.
I am amazed that charlatans like trustfire, who have been selling mislabelled crap for many years, are still going though. You'd think people would learn that some names are just to be avoided.
People do learn that some names are to be avoided but then new people who have never bought one end up buying one. It isn't necessarily always the same people.
I really have enjoyed several of your videos. I do have a heart felt question as I can be inpatient. Has anyone ever asked you to "Get To The Point?" Thank You, you really do make some astonishing material.
Maybe there is a hidden decimal point which would make it 990.0 mAh 😂
Or maybe it's lifetime capacity ...
Thank you so much for that demo. I suspected as much, but you've confirmed it.
I think the max mAh you can get from an 18650 is 3500-3600
Thanks again!
Danny
AVKG
"A Very Knife Guy"
🤗🔦👁️👍
After I watched your video an advertisement for those batteries on ebay popped up within your video window. $2.99 ea. Ebay has NO problem with blatant lies.
Of course Ebay doesn't. They make a lot of money from the sale of lies and fakes.
Even if you get a refund, they can invest your few bob for a couple of weeks. Times this by how many fakes are sold.
Hi. I, of course wondered about these too, thanks.
Not sure why you charged to 4.1V instead of 4.2V? And why stop at 3.1V, not 2.5V or when the cell's protection shut it off? You'll get more than 513, but not much.
Did the package state to customs it had Li-ion cells inside? I suspect they dropped the ball.
A while ago I bought 4 6000mAh batteries with a LED torch I bought, being $5 for the 4 it didn't bother me.
I ended up getting a Foxnovo 4S charger a few months later and tested those batteries
the mAh ratings were from 120-350.
Seems as a general rule.
Divide the rated/claimed capacity by 18 to get the true capacity
Helpful video. 6 years old. Well now they're selling them on eamazon as well. I'd love to see a video for some that are genuine and work so that I don't buy crap. It's 6 years later but if you could show maybe some brands that live up to the claim on the packaging that will be awesome.
They should be called GTFO...
This is why quality brand batteries are AUD$10+ and come close to their claims.The other thing I would add is you can feel the weight difference, cheap is light.
If you take that battery apart, I'd be willing to guess it's stuffed with flour.
Thanks mate you have saved me a bundle.... I was looking at buying a few hundred 18650 batteries and found your video when searching reviews.
Is there any particular brand or model that you would recommend?
can you give me the details of the charger/discharge unit you use in the video so I can do some of my own testing?
+Damian & Kelly take a look at description for charger/discharger. Recommend any by Panasonic Samsung Sony or LG.
Relations with China are going to change now... buyer beware.
Now, test the one that came with the torch.(flashlight). I think 5.6 amp hours is more than just a little optimistic. I'm expecting ~2.3 AH.
Before I watch this I will say that 9900ma is crap and I will have a guess at about 1200ma at most !
and now you are shocked
Yes I am....that's just rubbish.
Was thinking the same thing, however I didn't expect the ridiculously low MaH it actually has!
Graham R Dyer It was only 513mAh according to his instrument.
SmallBlock351Cleveland ....... of course I wouldn't be crazy enough to buy any of these .... BUT the ones that came into my possession recently clocked in at about 900mAh. Wish I'd seen this video before ....
Retest it at a discharge rate of 100 mA. I'd be interested to see mAh for such a test to see if it makes any difference
I believe at the current time, anything beyond 3600mAh are fakes.
OLight have 3600mAh on it's 18650.
I agree. Orbitronic also makes 3600mah 18650
Even 3000mah can be fake.
I got 3000mah batteries from Banggood : checked them to really hold : 1000mah. . .
True, you have to be careful of the brand of the battery. Stay clear with anything that has "fire". Nitecore, olight, orbitronic are some of the brands I trust.
Buy a intelligent charger like xtar vc4 to charge your batteries, it can show your battery capacity from your battery.
Pretty sure OLight's 3600mAh cells are just 3500mAh cells. Samsung, LG, Sony, Sanyo, and Panasonic only make cells reaching 3500mAh, and they are the ones on the bleeding edge of battery technology.
For the Malaysian airlines flights, only 221kgs was li--ion batteries. The total for Motorola was 2453kgs, but not all were batteries.
Horribly muffled audio.
Interesting video but one point/ correction regarding vaping devices. They pull way more amps then you state with amps pulled as high as 20-30 amps!
ff to 3:00 min to bypass the moaning
Thanx. I was in a hurry.
ty :)
What a video! Definitely helpful. I don’t have a pro charger/discharger such as yours. I suspected 9900 mAH was a “big lie” but I am curious about whether any of the battery makers are reporting the true life in mAH.
fuck i just bought 12 of these
Hook them up in parallel you'll get 6000mAh :P
me too...
same and i think i will get a fake fucking flashlight as well XD
mine worked fine! thank goodness
Mr. Donnelly ... Thank you for the well-explained, detailed investigation of the cell's
indicated capacity.
With all due respect, please consider this: We know that the deliverable mAh capacity
is an inverse function of the discharge rate, so any test of capacity is sensitive to the
discharge rate selected for the test.
In your video, the selection of discharge rate gets short shrift, without, frankly, much
to support it. As an alternative approximation, may I propose that you measure its
capacity in the service for which it was submitted, i.e., at the discharge rate in the
flashlight in which it was fitted and delivered to you. It should be a simple matter
to measure the operating current when the flashlight in on, and then use that as the
discharge rate for the test.
I have no way to guess whether it will come anywhere close to 9900 mAh, and I have
no personal interest in the product. But I do have the feeling that a discrepancy of
96% is a bit much to be explained only by considering the source, and a load resembling
a few LEDs might be a fairer test of the product than 1 Ampere was.
+Al Cohen It wasn't delivered with the flashlight. If anything, 1A is a very benign discharge rate for a li-ion 18650. The C rate is only 0.1 against the *stated* capacity claim.
I find all this nit-picking with the test quite astonishing with such an egregious marketing claim that seeks to defraud so many who are often unable (or unaware of how) to check the veracity.
Jump to 3:20 to skip the pointless blabber. Sorry, poster. Just a viewer's honest opinion.
Rob Loney Thank you for pointing out how the world works, oh wise and informative one. :)
Rob Loney I do. I'd rather get to the point.
Paul-Sebastian Manole lol
Obvious defense mechanism (ie. cheap insults) aside, you will have a better idea of my contribution to the "sum of knowledge" after I die, if you have the time to spare and watch me as I live my life and shit on the words of people like you. 8-O
That will be some time from now I guess, you write like a twelve year old
9900mAh at what voltage?
Thank you Tom. You saved me lot of trouble and money buying this crap on eBay or anywere else. Now we know that this HUGE capacitance is NOT possible.
Tom what equipment is displayed in your video, the device to charge and discharge and the interesting looking tech to the lower left of the keyboard.
thanks.
I've added a link in description to the SkyRC B6.
The other thing is a "smart meter". About 20 quid on eBay.
The OLED display is linked to a clamp-meter that's locked around the mains cable into the house. It uses the Hall Effect to determine the current that the house is consuming at any one time. (more info on clamp meters here: ua-cam.com/video/BzDf1HIE3v8/v-deo.html )
The unit has a micro-controller whereby you can set cost/kWh and different tariffs. But at its most basic, it simply multiplies amps x 240V to give you an instantaneous demand reading while maintaining cumulatives over day, week, month etc. for power consumption and cost.
It's a constant reminder of how wasteful my kids are.
thanks for your reply.
i am jealous of all the cool gear you have !
could you provide a link for the OLED display or a model number perhaps ?
www.geotogether.com/product/minim-electricity-monitor/
many thanks. your videos and information are very useful !
"Found a battery with 9900 mAH. I was shocked." (too subtle) :D
Thanks for making this video. I found that same battery on ebay and thought to myself it must be a scam and now i see it definitely is.
"if you're gonna tell a lie, might as well tell a big one!!". That was so funny, man. holy shit.
I bought same battry off ebay. Mine says GIF on side but is exactly like yours. I have no way to test it so thanks for your video. Mine doesnt last long in flashlight like aI thought it should.
Thanks for the video, i wonder what's inside the battery. Just curious...
Nice vid thanks. I wonder if the C rating is high enough to power an airplane, or with 4 of them in series
It's interesting to note that most manufacturers shy away from publishing the C number. You'd have thought that would be a selling point where it is a higher value for the sub-ohm use.
Look at that voltage sag when the nearly 2C load is placed on it. This was likely a recycled laptop battery.
Great vid keep it up from the USA
Thanks man ! You just saved my semester project ;)
Knew it wasn't going to do 9900, but didn't expect it to be that bad. lol. Using the same charger, it's awesome.
What kind of connectors are you using to charge and discharge the 18650 batteries? I noticed your using alligator clips, but to which connector? Did you make that connector yourself, or do they sell it for this charger? I also have a sky RC charger myself.
I've got a couple of batteries that look identical to those 9900mAh rated ones you show here. I just ran a load test at 300mA, and got 1350mAh with voltage drop to 2.5V.
Thank you sir. Can you demonstrate a Nitecore 18650, or CR123A?
I think the maximum they can reach in that size is 3500. Did you do the same check with 5800 battery? I suspect is less than half but not as low as 500.
thanks man, i was wondering how to check mah of my batteries, i too had a lipo charger,but this idea never flashed my mind...!
A very quick way to determine the capacity of your 18650s is as follows;
The energy density of lithium ion is 170Wh/Kg, or .17 Wh per gram.
First - determine the Wh:
weight of battery (g) * .17 = x.xx Wh
Then calculate the mAh:
Wh * 1000/V= mAh
Kyle Geddes
Thank you for this video.. I'm new to 18650 rechargeable batteries so excuse the maybe silly question i'm about to ask. What does or is the difference between 3200mah or a 3600mah or 3700mah? Does it last longer the more mah? and does it take longer to charge the higher the mah? and is there anything else?
I thank you in advance for clarification?
Peace!
Yes. More stored energy the higher the mAh.
Thank you Tom..
@@musmustafa7900 Also, it seems that with 18650 Lion cells, the higher the capacity, the lower the continuous max amps. Something else to pay attention to when your buying. It doesn't seem true across the board, but it does seem like a pretty consistent trend. I'm not sure why he said vape devices pull 2 amps. Mine currently, with a modest coil setup at .25ohm pulls 9.5A at 24watts.
@@crazytom I'm not sure why you said vape devices pull 2 amps. Mine currently, with a very modest coil setup at .25ohm pulls 9.5A at 24watts. I've run across a lot of posts in vape forums where they say to buy the highest amps you can at a capacity you want to live with for safety reasons, but anything less than 10-15A continuous doesn't seem to be useful for vape use.
Nice!
For discharge you should test at 100mA, it's quite standard for the capacity rate on label. It will last longer than your test. With 1 A discharge any small battery like this will not last long.
Oh gosh. Thanks for this video. Very constructive.