Good review, but after few months of owning/using a product I am not sure at all if it is as good as it claims to be. What worries me the most is...it sees to "destroy" battery capacity very fast? Let me explain what I have noticed. I have about 4 old 18650 batteries and 2 brad new. Lets concentrate on 2 new ones (although I measured, and noted numbers for 4 of them). I opened an excel and noted when I start use of a battery, when it gets empty, how long it takes to charge it and how many puffs I get out of it (I use them in an electronic cigarette that has resettable counter - and I use it n power setting 7.5W)). First thing I noticed was rapid drop in a number of puffs. From initial 2100 or so on new batteries I am down to 1600 on new batteries and 1400 or less on several year old batteries (in few months time). Basically from changing batteries once in a day and a half, few months later and I am changing them twice in a day??? I grant it speed, unlike other chargers (which took a day for one) which were extremely slow, this one pumps 18650 battery up in about two hours even on 0.5A setting. I measured power usage - it is actually lower than stated in any setting. Claim of auto stop and trickle charge may be false I think in some cases (specifically I once tried it with 4 AAA batteries and very surprised to find them charged but very hot in the morning after.....how does that happen if auto stop works?) Currently I have 3 x 18650 in, fully charged and I can see that they draw 0A so maybe for them it works, I will try to return to using previous slow charger to see if battery performance will improve, but meantime... I have some reservations about this product. I have been using 18650 batteries for 5 - 6 years and while I did have 2 fail completely, rest of them are plowing on without issues. This is a new experience for me. It is Yonii D4 charger, unless further testing shows that somehow my electronic cigarette is the one responsible...... I like the product, but consider this as a "heads up" that it may have some undesirable side effects. I will post better information when I do more tests, hopefully someone else will also start looking into this. As far as speed goes...if you need your battery to get charged quickly, it is perfect!
I used it to mainly charge flashlight batteries more than anything else but admit I did not track in such a precise way. Once I moved I cannot even locate most of my batteries or chargers but you likely have a strong point and I appreciate the detailed information.
The charger should pull back on the amps as the battery reaches full charge, the last 15% its tricking down so as not to beat up the battery , ...... Is it doing that ?
I recently purchased this exact charger from Amazon and so far its working out well. I keep the charging current at 0.5 amps and still get a fast charge, but the batteries still become very warm.
I think that's just the nature of things with many batteries. I slow-charge my phone using wireless charging and even slow it becomes warm but slow is said to be better for batteries so I think it is the better option still.
need some think like this as I go camping in a home made camper vehicle, I use led cob lights that I have converted to use 18560, they last longer the AAA, it took some looking but found it, but i got the Snado Universal Smart charger as I get it today, thats all, same as your one, different name, I hope, fingers crossed, £17.99 I just plug it into me small 6v ish solar panel,
@@Tw3akst3r got it, just the same, tested, worked, just different name and got it within 8hrs, by post, a record for me, your vid help me out, and come with a bag :)
Thanks i have a bought two the first one the mini plug broke off the board right off and had to get another one. I like it too with the exception of the connector don't knows I would trust it to disconnect and reconnect for traveling and placing it in the bag. I understand your sight issues I too have them. Thanks for your video it was helpful.
Thank you very much, Alix. I use it occasionally without issue but look at the comment (in the comment section of this video) from IDraganM in case you find it helpful as well.
Thanks great vid. Noob here and need some help plz, got this one and trying to charge some IMREN 18650 3000mah.,my mfg of equipment I’m using batts for says charge at min 2a BC deep cycling- so can only use 1 bay. Meter reads 0000mah at 100% charged at 2a, it also says 4.2v...shouldn’t it be around 3.7v? Not sure if that’s right, the bad batts are bad meter? Also any recommendations for a multi bay that does 2a or more for multiple bays at same time?
Thank you. I do't burn through batteries much so this works for me on the rare occasion I need it. Thing is another commenter makes me question this charger at least a bit. See the comment from IDraganM. As for the voltage, I was not positive but was looking into a few things via a quick Google search since it made me curious and this is what I found. Is it safe to charge 18650 batteries at 2 amps? Yes, just with an acceptable charging voltage and current. For most 18650 battery cells ( not the LiFePO4), the charging voltage is 4.2V, and the charging current is about 2A As for chargers, I think Notecore might be a good option and documentation there states that the voltage of the battery is 4.2V when fully charged. It mentions one slot and ability to use 4 slots in this image. m.media-amazon.com/images/I/61R2PEMVduL._SL1080_.jpg Here is the link if you'd like to check into it further. www.amazon.com/dp/B07QMP3L2X/ I just like to tinker and test things to a degree, sadly I'm no expert so I can't offer too much help for which I apologize.
Thanks for the helpful review. I have a question: In some descriptions I read: Charge Current: 2000mA Discharge current: 2000mA Is there a "Discharge" mode and how is it activated? Maybe Discharge is only used for a short time when measuring the internal resistance of batteries? Can this be used for a long time in order to completely discharge the batteries?
Sadly I cannot recall and since I moved last year as I went into the hospital (so I didn't get to move my things someone else did) I cannot locate most of my batteries or chargers so I cannot offer any details since I do not remember at the time, sorry I cannot be of help with this question. I think it did have some kind of testing/diagnostic discharge type option but really I just can't remember well enough to answer you properly.
@Viet Vo I must have misread or misunderstood the question because this uses USB to connect and charge but it is a battery charger, not a phone charger.
@Viet Vo I hope I remember when I eventually figure out where my box of batteries are and the charger since I have not found them since moving somewhat recently. Thanks for the info.
I watched your video because I was searching for a solution to a battery charger that I bought at garage sale type thing. Yours was very similar looking to mine but they are different in the end. But great video, I was hoping I could find some similarities enough to see if it was the same brand or not but I could not. Mine does not list a brand it just says model kb- M8. It Powers up fine, but when you put a battery in it it doesn't ever show anything but the flashing icon that it would normally show when you very first put a battery in, like it's searching the battery for the type and charge or something. Anyway, thank you for your video. It was interesting. I watched most of it so I guess it got me
Hi. Not a techie guy but how about nitecore, golisi, astrolux ,xtar, liitokala and other brands. Looking for 4bay plug and play type that can protect my batteries for a long time and detect what is needed to charge. Mains with overcharging and safety protection. Would you suggest one? Thanks.
I once took a look at something from Nitecore but I cannot recall what it was as it was some time ago but since it was a brand I actually had a chance to use I'd lean towards it UNLESS there is an overwhelming amount of information that suggests one excels over all the others.
I'm honestly not certain so I wouldn't want to tell you an incorrect answer. As with many items I toss them on a shelf after some time or in storage so I cannot recall where it is to check if there is included documentation about that either, sorry! I have none that are low in voltage to test myself but I'd think it could but it would be best to email or post on the Q&A on Amazon so you can be certain.
For the occasional use I require of it it's work good enough for me and I hope it does for you too. Thank you for checking out the video and taking the time to leave a kind comment. There is another comment where it was questionable but as the comment details a much more thorough methodology than what I have done so perhaps also read and consider that information as well.
@@Tw3akst3r ah yes just seen that comment, I suspect the 18650 batteries are wearing faster due to the faster charging. I've noticed that myself, most 18650 chargers will usually charge at about 0.8-1a so if this one can do 2a that's a huge increase. Not sure why AA/AAA batteries would get hot when it should have shut off, I know it's harder to know when ni-mh batteries are fully charged. It's cheap enough to try out at £10 I've got a meter that measures what's going in so I can see if it is shutting off so I'll post my findings. Thanks again hope your 2022 is a good one, love from the UK ✌️
This was so helpful! Thank you for being so thorough! My Question is how have you liked this brand of battery charger over time? Has it lasted you? what do you like about it? What do you dislike about it? let me know thank you again!
Thanks for watching and your kind words. Sadly I cannot answer the questions you have because I have several chargers and MANY batteries so it is rare I need to charge them. I know I should charge every 3 months or so if they are used or not but I basically use the batteries until they need to be charged then toss them into a box and grab fresh batteries. After I have a good number needing to charge I then charge them but I also moved and cannot locate this charger or my box of batteries so I haven't need to use the charger enough to offer a truthful answer about the longevity. It does have a high Amazon rating and the Fakespot rating of a B suggests those reviews are legit so I'd lean towards it being a good option. I wish I knew where it was and my batteries, definitely a couple things I need but simply cannot locate after the move. I'm sorry I cannot be more helpful with your questions but I'd rather answer and explain that just say it's good.
@@Tw3akst3r No, this response was plenty helpful! I had never even heard about fakespot before now either so I will use that resource as well. Keep up the good work. And thank you for the quick response! Much love
@@abigaildanielle5384 There is an extension you can add to your web browser so when you go to Amazon (for example) you see a grade for the reviews which helps determine if they are legit reviews or likely fakes or those which the sellers have had others leave, some for money most for free products. It is free and works well. Thank you again for the kindness and for checking out my video.
It turns on when plugged into a power source. Google translate: Включается при подключении к источнику питания. Vklyuchayetsya pri podklyuchenii k istochniku pitaniya.
@@-Kondrat- Sorry, I misread your other reply. It only can read and display voltage ( V ), current ( mA ), time ( h ), capacity ( mAh ), internal resistance ( mR )
@@-Kondrat- That is the product listing in terms of what it is supposed to be capable of measuring. Internal Resistance on some websites I've seen mention "a battery with 125mR" but it isn't common so I am not 100% sure what the deal there is, sorry. Example: www.rcgroups.com/forums/showthread.php?980290-Cell-Internal-Resistance-Meter-more-useful-than-C-ratings-Now-available From the link above: As an example, if you have a cell with a 50mR resistance inside, it's a 2S pack, so that's 100mR for the whole pack, we'll ignore the lead and connector resistance for now (though they can an DO cause problems at times - witness people using JST connectors at 10~15A... meltdown). Okay, so we've got our 100mR pack, we want to draw 9A from it... what's the voltage real voltage (from 8.4V) and how hot will that pack get?
You know, the Chinese really do think we’re obtuse. I just picked up the same exact charger, but with a different name- Snado. They do the same thing with tools whilst manipulating the prices almost at will. So darn annoying.
I know what you mean. I am on Amazon a lot and get product offers often and many times it's the exact same item with a different sticker (brand name) so I usually don't accept it since it's identical in every way (besides name and package design).
Good review, but after few months of owning/using a product I am not sure at all if it is as good as it claims to be. What worries me the most is...it sees to "destroy" battery capacity very fast? Let me explain what I have noticed. I have about 4 old 18650 batteries and 2 brad new. Lets concentrate on 2 new ones (although I measured, and noted numbers for 4 of them). I opened an excel and noted when I start use of a battery, when it gets empty, how long it takes to charge it and how many puffs I get out of it (I use them in an electronic cigarette that has resettable counter - and I use it n power setting 7.5W)). First thing I noticed was rapid drop in a number of puffs. From initial 2100 or so on new batteries I am down to 1600 on new batteries and 1400 or less on several year old batteries (in few months time). Basically from changing batteries once in a day and a half, few months later and I am changing them twice in a day??? I grant it speed, unlike other chargers (which took a day for one) which were extremely slow, this one pumps 18650 battery up in about two hours even on 0.5A setting. I measured power usage - it is actually lower than stated in any setting. Claim of auto stop and trickle charge may be false I think in some cases (specifically I once tried it with 4 AAA batteries and very surprised to find them charged but very hot in the morning after.....how does that happen if auto stop works?) Currently I have 3 x 18650 in, fully charged and I can see that they draw 0A so maybe for them it works, I will try to return to using previous slow charger to see if battery performance will improve, but meantime... I have some reservations about this product. I have been using 18650 batteries for 5 - 6 years and while I did have 2 fail completely, rest of them are plowing on without issues. This is a new experience for me. It is Yonii D4 charger, unless further testing shows that somehow my electronic cigarette is the one responsible...... I like the product, but consider this as a "heads up" that it may have some undesirable side effects. I will post better information when I do more tests, hopefully someone else will also start looking into this. As far as speed goes...if you need your battery to get charged quickly, it is perfect!
I used it to mainly charge flashlight batteries more than anything else but admit I did not track in such a precise way. Once I moved I cannot even locate most of my batteries or chargers but you likely have a strong point and I appreciate the detailed information.
Try another charger, maybe you could get same results which speak about the quality of the batteries.
The charger should pull back on the amps as the battery reaches full charge, the last 15% its tricking down so as not to beat up the battery , ...... Is it doing that ?
I recently purchased this exact charger from Amazon and so far its working out well. I keep the charging current at 0.5 amps and still get a fast charge, but the batteries still become very warm.
I think that's just the nature of things with many batteries. I slow-charge my phone using wireless charging and even slow it becomes warm but slow is said to be better for batteries so I think it is the better option still.
need some think like this as I go camping in a home made camper vehicle, I use led cob lights that I have converted to use 18560, they last longer the AAA, it took some looking but found it, but i got the Snado Universal Smart charger as I get it today, thats all, same as your one, different name, I hope, fingers crossed, £17.99 I just plug it into me small 6v ish solar panel,
Hope it works out for you!
@@Tw3akst3r got it, just the same, tested, worked, just different name and got it within 8hrs, by post, a record for me, your vid help me out, and come with a bag :)
Thanks i have a bought two the first one the mini plug broke off the board right off and had to get another one.
I like it too with the exception of the connector don't knows I would trust it to disconnect and reconnect for traveling and placing it in the bag.
I understand your sight issues I too have them.
Thanks for your video it was helpful.
Thanks for watching and commenting.
Cheers for your comment, now I'm going to leave the cable plugged into the unit, and just unplug the USB end
huge respect to you sir for your double checks
Thanks for watching.
@@Tw3akst3r is it.still working ? Or how long did it last? Any feedback after these few years?
Cool review, appreciate the honest information. Keep up the good work buddy.
I try to offer what I can (even if I fail or am flawed in doing so some times, thank you!
Thanks a lot, I am looking for a products like that!
👍 😎
Nice review...I saw It on amazon for 20euros and I'm buying It right away...Thank you SIR for helping me decide...Best regards
Thank you very much, Alix. I use it occasionally without issue but look at the comment (in the comment section of this video) from IDraganM in case you find it helpful as well.
Lovely!!! This charger can charge the 21700 vaping batteries. Thanks bro
Thank you for watching.
Hello ! Can I use a powerbank that output 5v/3A
Mi 50W Power Bank 20000mAh
Thank you!
I can't see why that would be a problem.
Just got it from Amazon. Testing out different batteries. That’s for the information
Thanks for watching. It works for me as I rarely need it. Look at the comment from IDraganM in case it is relevant to you.
Thanks great vid. Noob here and need some help plz, got this one and trying to charge some IMREN 18650 3000mah.,my mfg of equipment I’m using batts for says charge at min 2a BC deep cycling- so can only use 1 bay. Meter reads 0000mah at 100% charged at 2a, it also says 4.2v...shouldn’t it be around 3.7v? Not sure if that’s right, the bad batts are bad meter? Also any recommendations for a multi bay that does 2a or more for multiple bays at same time?
Thank you. I do't burn through batteries much so this works for me on the rare occasion I need it. Thing is another commenter makes me question this charger at least a bit. See the comment from IDraganM. As for the voltage, I was not positive but was looking into a few things via a quick Google search since it made me curious and this is what I found.
Is it safe to charge 18650 batteries at 2 amps?
Yes, just with an acceptable charging voltage and current. For most 18650 battery cells ( not the LiFePO4), the charging voltage is 4.2V, and the charging current is about 2A
As for chargers, I think Notecore might be a good option and documentation there states that the voltage of the battery is 4.2V when fully charged. It mentions one slot and ability to use 4 slots in this image. m.media-amazon.com/images/I/61R2PEMVduL._SL1080_.jpg
Here is the link if you'd like to check into it further. www.amazon.com/dp/B07QMP3L2X/
I just like to tinker and test things to a degree, sadly I'm no expert so I can't offer too much help for which I apologize.
@@Tw3akst3r Thanks for the info and research!
You're welcome, sorry I couldn't be of more help.
I know this is an old post but even if it's 3.7 volts you still need enough to make it push so you need the 4.2 volt.
Thanks for the helpful review. I have a question:
In some descriptions I read:
Charge Current: 2000mA
Discharge current: 2000mA
Is there a "Discharge" mode and how is it activated?
Maybe Discharge is only used for a short time when measuring the internal resistance of batteries? Can this be used for a long time in order to completely discharge the batteries?
Sadly I cannot recall and since I moved last year as I went into the hospital (so I didn't get to move my things someone else did) I cannot locate most of my batteries or chargers so I cannot offer any details since I do not remember at the time, sorry I cannot be of help with this question. I think it did have some kind of testing/diagnostic discharge type option but really I just can't remember well enough to answer you properly.
Hi, when its finished charging and you remove all the batteries, does the screen go to sleep (turn off) automatically? Thanks,
Sorry but I cannot remember and am in the hospital so cannot check.
Hey dude! Is this compatible with any rechargeable battery? I currently have some eneloops, but I forgot where I put the charger. Thanks!
Brand doesn't matter, as long as the type/size is right it's good.
@@Tw3akst3r thanks! You’re the best bro.
What does the A and C button do ?
8m in the hospital and won't be back home for a while so sorry but I cannot check and don't recall at the moment.
Can this be used to charge phones or usb devices from the batteries or is this purely a battery charger?
Just a battery charger.
@Viet Vo thanks for the info
@Viet Vo I must have misread or misunderstood the question because this uses USB to connect and charge but it is a battery charger, not a phone charger.
@Viet Vo I hope I remember when I eventually figure out where my box of batteries are and the charger since I have not found them since moving somewhat recently. Thanks for the info.
@Viet Vo Great, thanks so much for sharing the information.
I watched your video because I was searching for a solution to a battery charger that I bought at garage sale type thing. Yours was very similar looking to mine but they are different in the end. But great video, I was hoping I could find some similarities enough to see if it was the same brand or not but I could not. Mine does not list a brand it just says model kb- M8.
It Powers up fine, but when you put a battery in it it doesn't ever show anything but the flashing icon that it would normally show when you very first put a battery in, like it's searching the battery for the type and charge or something. Anyway, thank you for your video. It was interesting. I watched most of it so I guess it got me
Thank you for watching and I hope you get it working. I'm in the hospital so I couldn't check model number info anytime soon.
Hi. Not a techie guy but how about nitecore, golisi, astrolux ,xtar, liitokala and other brands. Looking for 4bay plug and play type that can protect my batteries for a long time and detect what is needed to charge. Mains with overcharging and safety protection. Would you suggest one? Thanks.
I once took a look at something from Nitecore but I cannot recall what it was as it was some time ago but since it was a brand I actually had a chance to use I'd lean towards it UNLESS there is an overwhelming amount of information that suggests one excels over all the others.
@@Tw3akst3r many thanks. 😊
You're welcome and thank you for checking out my video.
Can this charger revive dead 18650 batteries, or low voltage battery that is?
I'm honestly not certain so I wouldn't want to tell you an incorrect answer. As with many items I toss them on a shelf after some time or in storage so I cannot recall where it is to check if there is included documentation about that either, sorry! I have none that are low in voltage to test myself but I'd think it could but it would be best to email or post on the Q&A on Amazon so you can be certain.
Great review. Greetings from germany
Thank you!
Thanks for the great video, just about to buy one found your video trying to find out if it was any good ✌️
For the occasional use I require of it it's work good enough for me and I hope it does for you too. Thank you for checking out the video and taking the time to leave a kind comment. There is another comment where it was questionable but as the comment details a much more thorough methodology than what I have done so perhaps also read and consider that information as well.
@@Tw3akst3r ah yes just seen that comment, I suspect the 18650 batteries are wearing faster due to the faster charging. I've noticed that myself, most 18650 chargers will usually charge at about 0.8-1a so if this one can do 2a that's a huge increase.
Not sure why AA/AAA batteries would get hot when it should have shut off, I know it's harder to know when ni-mh batteries are fully charged.
It's cheap enough to try out at £10 I've got a meter that measures what's going in so I can see if it is shutting off so I'll post my findings.
Thanks again hope your 2022 is a good one, love from the UK ✌️
For that cheap def worth a shot and it'll be informative to see your results. Have a wonderful 2022,God bless!
This was so helpful! Thank you for being so thorough! My Question is how have you liked this brand of battery charger over time? Has it lasted you? what do you like about it? What do you dislike about it? let me know thank you again!
Thanks for watching and your kind words. Sadly I cannot answer the questions you have because I have several chargers and MANY batteries so it is rare I need to charge them. I know I should charge every 3 months or so if they are used or not but I basically use the batteries until they need to be charged then toss them into a box and grab fresh batteries. After I have a good number needing to charge I then charge them but I also moved and cannot locate this charger or my box of batteries so I haven't need to use the charger enough to offer a truthful answer about the longevity. It does have a high Amazon rating and the Fakespot rating of a B suggests those reviews are legit so I'd lean towards it being a good option. I wish I knew where it was and my batteries, definitely a couple things I need but simply cannot locate after the move. I'm sorry I cannot be more helpful with your questions but I'd rather answer and explain that just say it's good.
@@Tw3akst3r No, this response was plenty helpful! I had never even heard about fakespot before now either so I will use that resource as well. Keep up the good work. And thank you for the quick response! Much love
@@abigaildanielle5384 There is an extension you can add to your web browser so when you go to Amazon (for example) you see a grade for the reviews which helps determine if they are legit reviews or likely fakes or those which the sellers have had others leave, some for money most for free products. It is free and works well.
Thank you again for the kindness and for checking out my video.
Как включить Ом ?
It turns on when plugged into a power source.
Google translate:
Включается при подключении к источнику питания.
Vklyuchayetsya pri podklyuchenii k istochniku pitaniya.
@@Tw3akst3r show ohms ?
@@-Kondrat- Sorry, I misread your other reply. It only can read and display voltage ( V ), current ( mA ), time ( h ), capacity ( mAh ), internal resistance ( mR )
@@Tw3akst3r internal resistance ( mR ) ??
@@-Kondrat- That is the product listing in terms of what it is supposed to be capable of measuring. Internal Resistance on some websites I've seen mention "a battery with 125mR" but it isn't common so I am not 100% sure what the deal there is, sorry.
Example:
www.rcgroups.com/forums/showthread.php?980290-Cell-Internal-Resistance-Meter-more-useful-than-C-ratings-Now-available
From the link above:
As an example, if you have a cell with a 50mR resistance inside, it's a 2S pack, so that's 100mR for the whole pack, we'll ignore the lead and connector resistance for now (though they can an DO cause problems at times - witness people using JST connectors at 10~15A... meltdown).
Okay, so we've got our 100mR pack, we want to draw 9A from it... what's the voltage real voltage (from 8.4V) and how hot will that pack get?
You know, the Chinese really do think we’re obtuse. I just picked up the same exact charger, but with a different name- Snado. They do the same thing with tools whilst manipulating the prices almost at will. So darn annoying.
I know what you mean. I am on Amazon a lot and get product offers often and many times it's the exact same item with a different sticker (brand name) so I usually don't accept it since it's identical in every way (besides name and package design).
Just unboxed so only USB chargeable.
I'm not sure if this is a question or a statement but it does use a USB cable to connect and charge through, not a power brick.
Can i charge my 26650 lifepo4 battery?
Only 2 at a time as I understand it.