@@castello544 when building packs you match cells with about the same IR to get maximum performance on the battery pack your building so it matters A LOT..to test them.
I bought some "Tesla" cells on eBay about 3 years ago. They looked like your unwrapped cells, except they're shinier -- new looking, not salvaged. They had the same triangular positive terminal, and they had the "III" mark. I use them in flashlights.
Have this Ryobi RM300E riding lawn mower, it uses 4 12Volt 50 amp hr lead acid batteries (48 volts) . The lead acid batteries made for this lawn mower are not long made. Is it possible to built an 48 volt 50 amp hr battery using 18650 or 21700 batteries. The lawn mover has a 55 amps inrush current and constant power after that is around 30 amps.
Maybe the cells that are wrapped are from the outside of the battery pack the ones that are not wrapped would be from the inside of the battery pack after the pack was assembled the only reason they would wrap the outer cells is because they are on the outside of the pack and exposed to an extent. Just an idea the cells towards the center of the pack assembly would not need to be wrapped because they're surrounded by other cells but the ones on the outside of the battery pack they would want rap because they are visible or exposed to the outer edge of the cell pack. Just a possibility??
Hi jehu. Can you make a video on how to connect a secondary battery with the primary battery to increase range. Which I could Plug when going for a long trip and remove while city ride.
Do you know what the amp discharge rating is for Tesla 18650 cells? DeWalt uses 20 amp rated discharge cells for their 20v MAX tools. I imagine a motor to run a car needs a lot of amps and the higher the amp discharge rate the lower the capacity. So to get higher capacity they probably just use a lot of parallel connections.
How do you do these prices?? I just went on vacation and don't have extra funds, but I'm considering selling my ROG STRIX 3090 to grab a bunch of these up. Those look like new as well.
Big parralel packs are going to be best for those cells as I imagine with their higher internal resistance they won't be very high amperage. I'm guessing maybe 5-7amp max safe discharge per cell similar to the Panasonic ncr cells.
@@jehugarcia should have expected anything less of tesla, of course they'd know but for the DIYer you definitely need to increase the number in parallel configuration especially for power wall and high output appliances/applications when considering using higher capacity round cells typically; although there are very few exceptions when it comes to round cells but of course I'm not imparting any knowledge to you ;)
Id to get some of those I'm using regular 18650 with my droen FPV and wings and radio I feel really curios about the efficiency and capacity of those battery's
So many misrepresented cells out on the market, new and used. IR is a deal breaker. Batteries are the foundation of a system, maybe if they were $1.50-1.75 a cell.
i cant afford the battery board currently if i could i would forsure likely would have to have a friend with more soldering equipment stuff than i have to get the module assembled
How many pcb packs can you stack together at one time? Also thanks for the dongle link i asked about in a previous video as soon as i seen it from the link provided by you i was like "Oh i see that's simple enough :P.
Hellz yeah! Keep up with the investigations. THIS is how you gotta do it to figure what's behind the curtain. Until they give us manuals and sell parts and give us the right to repair.
maybe early on tesla was going to use 18650 for the model 3 & had started production but made a late change to go with the bigger cells so these 18650 were no longer of use & discarded & now for sale by a third party? or just chinese copies. will never know.
I think at least some cells have wraps in a Tesla pack. At 1:12 of your video it sure looks like you can see a wrap on the 21700 cell he removes from the module: ua-cam.com/video/-OxVJ44hreI/v-deo.html
The central three lines are from the spot-welding of the internal tab to the bottom of the cell. The ring on the bottom is a secondary vent in case of overpressure in the cell.
Need a LOT of extra care when using Tesla cells. Be absolutely sure they are balancing, and absolutely sure not to charge them cold. They will put on quite a display if not handled correctly.
With Tesla cells, once thermal runaway starts, it is difficult to stop. It will spread to the other cells. NCA creates its own oxygen, supposedly they can even burn under water. Thermal runaway can happen more quickly with NCA. 470C per minute compared to 1.5C per minute with LFP.
Well I rather use Lead Acid Battery because it can be ♻️ pretty much everything. Plus if comparing the price right now. ✅ plus gotta say, I don't know which one is easier to get over heating. And nowadays you can maintain your Lead Battery easily and can replace cells if you want too. So yeah. I don't really think lithium is a good solution for houses because of the price, and the amount of time lithium gonna last is not really that longer than Lead Battery. Less say if Lead can last for 3 years. I don't think lithium can last longer than 7 years without a good cooling system. But even with the great cooling systems. You are still using and drawing power out of those batteries and then battery have to recharge more to run that cooler. So end of the life spend would be quite similar to lead Battery. So yeah. The only thing good about it on vehicles is because it's lighter. Save more energy for the vehicle. That's it. If you compare to a Lead Battery that can be ♻️ 99% as they said. By the time you change your Battery. That old one already been recycled. Obviously they now have the Flow Battery for big projects. But I think it's too much for a small houses. Unless they can make it smaller for everyone 😏 will be much cheaper too as they said 🤷
Lithium is the way to go for portable stuff but in my experience for home and solar I’ve gotten much more life out of deep cycle batterys and lifepo4 then lithium ion
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
You need to test internal resistance with a dedicated IR meter. The ones built into the chargers are wildly off.
What does the IR affect or why does it matter? Sorry but newb here :)
@@castello544 it affects how much current the cell can provide without heating up. Generally, lower internal resistance is better.
@@jbrdddd Thanks. I've wondered about that for a while :)
@@castello544 when building packs you match cells with about the same IR to get maximum performance on the battery pack your building so it matters A LOT..to test them.
@@10OZDuster It would seem that these aren't "real tesla cells" with that high of an IR!?
I bought some "Tesla" cells on eBay about 3 years ago. They looked like your unwrapped cells, except they're shinier -- new looking, not salvaged. They had the same triangular positive terminal, and they had the "III" mark. I use them in flashlights.
The new model s packs are laser welded together, no wires. Maybe model s refresh throwaways.
I love the work you do. I remember the VW bus. Wow what an amazing vehicle absolutely cool as f!!
Have this Ryobi RM300E riding lawn mower, it uses 4 12Volt 50 amp hr lead acid batteries (48 volts) . The lead acid batteries made for this lawn mower are not long made. Is it possible to built an 48 volt 50 amp hr battery using 18650 or 21700 batteries. The lawn mover has a 55 amps inrush current and constant power after that is around 30 amps.
Sorry without the cells but with positive and negative wire so I can make my own DIY battery like 48 to 12 volts 48 volts 80 4 volts something
They not Tesla cells as I dealt with a few real Tesla cells, they are unwrapped plus have a QR code on them.
Maybe the cells that are wrapped are from the outside of the battery pack the ones that are not wrapped would be from the inside of the battery pack after the pack was assembled the only reason they would wrap the outer cells is because they are on the outside of the pack and exposed to an extent. Just an idea the cells towards the center of the pack assembly would not need to be wrapped because they're surrounded by other cells but the ones on the outside of the battery pack they would want rap because they are visible or exposed to the outer edge of the cell pack. Just a possibility??
Hi jehu.
Can you make a video on how to connect a secondary battery with the primary battery to increase range. Which I could Plug when going for a long trip and remove while city ride.
I don't know.....the Chinese are getting better at copying EVERYTHING.
No lie, that and almost $600 for 200 cells? Dang.
China became "The China" buy copying every single thing from the west
Most of things designed from the west, but made and manufactured in China, to cut cost.
Pretty sure there’s an identical chinese copy of myself somewhere in china as well!
Do you know what the amp discharge rating is for Tesla 18650 cells? DeWalt uses 20 amp rated discharge cells for their 20v MAX tools. I imagine a motor to run a car needs a lot of amps and the higher the amp discharge rate the lower the capacity. So to get higher capacity they probably just use a lot of parallel connections.
How do the fit into 18650 holders? Tight ? Yes or no
Those are expensive wow. Great capacity but the resistance? Let's see an update on them before to long jehu!
How do you do these prices?? I just went on vacation and don't have extra funds, but I'm considering selling my ROG STRIX 3090 to grab a bunch of these up. Those look like new as well.
Are Tesla 18650 cells good for high power vaping mods ?
Big parralel packs are going to be best for those cells as I imagine with their higher internal resistance they won't be very high amperage. I'm guessing maybe 5-7amp max safe discharge per cell similar to the Panasonic ncr cells.
Model S modules usually use 74p performance do 84p or 86p
@@jehugarcia should have expected anything less of tesla, of course they'd know but for the DIYer you definitely need to increase the number in parallel configuration especially for power wall and high output appliances/applications when considering using higher capacity round cells typically; although there are very few exceptions when it comes to round cells but of course I'm not imparting any knowledge to you ;)
Id to get some of those I'm using regular 18650 with my droen FPV and wings and radio I feel really curios about the efficiency and capacity of those battery's
I would love to have those
Why exactly are the Tesla cells so attractive to you guys? Surely there are better or equal quality cells that you can find that aren't sus?
Possibly from power walls???? Still, they test well, seem deep cycle capable...
There is a QR code on the side of the sleeveless batteries, you should try to read the data in it.
3600mah+ per cell is amazing. It seems like Jehu will always find a way when it comes to obtaining batteries.
So many misrepresented cells out on the market, new and used. IR is a deal breaker.
Batteries are the foundation of a system, maybe if they were $1.50-1.75 a cell.
i cant afford the battery board currently if i could i would forsure likely would have to have a friend with more soldering equipment stuff than i have to get the module assembled
How many pcb packs can you stack together at one time? Also thanks for the dongle link i asked about in a previous video as soon as i seen it from the link provided by you i was like "Oh i see that's simple enough :P.
Sky is the limit, you can parallel as
Many battery packs as you need
full tutorial on making a powerwall with those? :)
Like you would do with every other battery cells
Hellz yeah! Keep up with the investigations. THIS is how you gotta do it to figure what's behind the curtain. Until they give us manuals and sell parts and give us the right to repair.
*maybe* they're rejects from Panasonic?
maybe early on tesla was going to use 18650 for the model 3 & had started production but made a late change to go with the bigger cells so these 18650 were no longer of use & discarded & now for sale by a third party? or just chinese copies. will never know.
Do they feel heavy
I think at least some cells have wraps in a Tesla pack. At 1:12 of your video it sure looks like you can see a wrap on the 21700 cell he removes from the module: ua-cam.com/video/-OxVJ44hreI/v-deo.html
Maybe 2170 cells on model3/y but I’ve never seen wrappers on any 18650 cell on modelS/X before
Mooch, can you use these Tesla 18650 to vape?
@@vinnyc365 depends on their current rating…which we don’t know. 🙂 I would stay under 5A/15W. Probably best performing at 3A/10W though.
@@batterymooch Thanks Mooch. Much respect.
Yo here form Chicago!!!
Более интересный вариант от tesla panasonic аккумуляторы форм фактора 21700 в них уже 4800mah
You got link to the battery boards
How do people find these
Sell enough battery and you become all powerful.
would be interested in richRebuilds opinion..
Nominal 3.80V 3400mAh
High IR mystery cells........No thanks.
How much is that
I ordered 360 of the unwrapped cells🤞. So far there testing around 3000mah to 3300mah…and 35 - 60mr?
FYI…I’m testing with my LiitoKala Lii-500. Going to test the whole 180 cell box with the same tester.
I buy new Tesla 21700 cells in China just $1
Are those marks or vents?
The central three lines are from the spot-welding of the internal tab to the bottom of the cell. The ring on the bottom is a secondary vent in case of overpressure in the cell.
Maybe these are rejects from Tesla due to the high internal resistance?
Power packs and power walls wouldn’t need power cells so the higher resistance would be a trade off for the extra
Capacity
take the wrap off one. They may be marked.
thats funny you know louis
his dad taught me electronics
How much that sir i buy to you
Another us only shipping. It’s really frustrating
There are a lot of laws when it comes to shipping lithium batteries.
@@EnlightenedSavage that is right unfortunately
Sir, is TESLA BATTERIES is better than the other 18650 batteries? Thank you. ✌️✌️
How can I get Tesla cells without getting the testicles like that like I want Tesla cells tonight a pack with
You have so many guesses that they arent Tesla's. So they are probably not. Or rejected cells where someone had a play with.
All speculation though
@@jehugarcia they sure look like it though!
I'm in..!
Call mask and ask.
Hi sir
SUREFIRE CELLS ???
8 minutes of " these may or may not be Tesla cells."
What a waste of good electrons talking about it.
Looks like Tesla cells.
Smells like Tesla cells.
Burns like Tesla cells...?!...
You could compare the colour of smoke
Need a LOT of extra care when using Tesla cells. Be absolutely sure they are balancing, and absolutely sure not to charge them cold. They will put on quite a display if not handled correctly.
Isn’t that any cell?
With Tesla cells, once thermal runaway starts, it is difficult to stop. It will spread to the other cells. NCA creates its own oxygen, supposedly they can even burn under water. Thermal runaway can happen more quickly with NCA. 470C per minute compared to 1.5C per minute with LFP.
Well I rather use Lead Acid Battery because it can be ♻️ pretty much everything. Plus if comparing the price right now. ✅ plus gotta say, I don't know which one is easier to get over heating. And nowadays you can maintain your Lead Battery easily and can replace cells if you want too. So yeah. I don't really think lithium is a good solution for houses because of the price, and the amount of time lithium gonna last is not really that longer than Lead Battery. Less say if Lead can last for 3 years. I don't think lithium can last longer than 7 years without a good cooling system. But even with the great cooling systems. You are still using and drawing power out of those batteries and then battery have to recharge more to run that cooler. So end of the life spend would be quite similar to lead Battery. So yeah. The only thing good about it on vehicles is because it's lighter. Save more energy for the vehicle. That's it. If you compare to a Lead Battery that can be ♻️ 99% as they said. By the time you change your Battery. That old one already been recycled. Obviously they now have the Flow Battery for big projects. But I think it's too much for a small houses. Unless they can make it smaller for everyone 😏 will be much cheaper too as they said 🤷
Lithium is the way to go for portable stuff but in my experience for home and solar I’ve gotten much more life out of deep cycle batterys and lifepo4 then lithium ion
Fakes…