Tesla 21700 battery test
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- Опубликовано: 26 сен 2024
- These 4 batteries were test samples obtained from the factory. The official model number is the Sanyo/Panasonic NCR21700A.
The electronic load used to measure the capacity is this one:
www.banggood.c...
A review of this device is available here:
lygte-info.dk/...
The Sanyo/Panasonic NCR21700A is available rewrapped as the "Vapcell 5000mAh 15A 21700" battery here:
www.aliexpress...
About 10% more usable power and about 10% less in cost per KW for a gain in size of about 10%.
Just when you thought you had the ultimate cell (18650) the goal posts get moved again.
I'm thinking would phone batteries provide more power to mass. easily stacked with no space between them wasted. Or would they overheat having no air gaps for cooling.
I have a bunch of 5000 mah 21700's as well as 4800 mah they might be the 4800 cells..
I know this video a bit older.. You might have figured that out already.. :)
5000 milli-amp hours = 5 amp hours.
Надо не 1 А а 5А нагружать тогда ёмкость батареи будет боле точная!
How many cycles till droping 20% capacity. Thanks.
thanks
have you ever tried to spotweld these 21700 cells? i have tried to spot weld on bottom side they are but from top side they arent spotweld. any idea why?
Do you know what can dissolve that grey adhesive?
how did you remove the solid button material ?
Nice test. One question. How in the world did you get those cells🙈
It's a secret ;)
Enderman LP noooooooo......
are these the sold by Acebeam under Acebeam 5100 20A 21700 ?
😃 can you measure Teslar 21700 internal resistance video have ! 13 mili Omp is it new battery or 18 mili Omp is it new or old battery !
I'm considering ordering the electronic load used in your video to test 18650 batteries, and I was wondering how you generated the graphs of voltage vs. time. Is there a way to connect the board to your computer and read the voltage values in real time, or did you use some other auxiliary equipment to record this data?
Those graphs were not made with the electronic load, those were made by a friend who has professional grade testing equipment that costs thousands of dollars. I wish I had a battery tester like that!
@@EndermanEngineering. )
Did you try to spot weld them? The metal case has the same alloy the the 18650ies?
the metal case can take A soldering iron but the little spot on top doesn't take any solder at all
Good job, how mane cycles?
The Samsung 48G's have been around for awhile, they have a higher tested mAH and you won't pay a premium because the word TESLA isn't printed on them... and if you buy on Alibaba you could have ANY custom wrap so you could put TEZLA or BOOBY or whatever you like.
The 48Gs have far less performance. The only cells with higher capacity are the LG M50s and the Samsung 50E2.
@@EndermanEngineering The LG M50's discharge rate are at 7.28 amps while the Samsung 48G's have a 9.6 amp discharge rate. While the M50 will do 9.6 amps its not recommended however your right about the mAH of the M50, at least at 1 and 5 amps you'll get 300 or so more mAH than the 48G. But at 10 amps the difference is only about 70 mAH in favor of the M50. Im sure you know I'm just stating for other readers... But I'm very interested in the Samsung 50E2 that you mentioned. I have not heard of that cell yet actually. Is it a 21700 ? Im assuming yes... Do you have the specs ?
@@EndermanEngineering Actually I have seen the 50 E2's ... Its over rated, their closer to 4900 mAH.
@@silversrayleigh8980The discharge and capacity ratings from the manufacturer mean literally nothing. You need to look at discharge curves of real world tests done by hkj, mooch, and others. Those tell the actual performance and capacity. Also the 50E2 isn't even available yet so idk how you have "seen" them.
@@EndermanEngineering Ya I didn't see E'2' s I assumed you were referring to the E 21700's and were summing up the 21700 with a 2. As far as my numbers that I stated earlier, there not from the manufacturer, they are from Thunderheart's REAL WORLD TEST reviews. But you should be careful of stating which cell you think has a higher performance before checking the amp discharge rate as the two cell's previously compared have different Amp ratings, and the M50's might not even be usable in many applications as the MAX amp discharge rate is 7.28 so its 'performance' won't matter if it doesn't even have the specs to make your device work in the first place. Many applications require over 9 or 10 but it really depends of course.
Anyway are you offering any info on these 50 E2's ?
Where did u get them cells
Wow I thought Tesla be using headway 38120. 8 AH with a max of 200 ah. Build your own car battery pack XD
Awsome thank you im a real nerd that cant do nerd shit
Great video - where’s you get the batteries?
The tesla gigafactory. If you get vapcell 15A 5000mAh 21700 cells they should be the same thing.
How did you get them from gigafactory? It’s not like you can just waltz on in there (I tried on a road trip to Las Vegas and got stopped by security) Do you have a special arrangement with Tesla?
@@Slickasv All I can say is that you won't be able to get them from there normally ;)
Enderman LP Very cool - keep up the vids
@@Slickasv Thanks!
Do you know how to solder the positive side is made of aluminum
The cathode is 5% aluminum
Which battery gives more capacity for low-amp use (0-5 amps) like for flashlights, lg m50 or this cell panasonic /sanyo 21700a)? Thanks.
They should be about the same, but I think the M50 is slightly better.
@@EndermanEngineering Thank you very much
Wouldn’t your test results be closer to 4.63Ah with 0.963A load at a 2.5v discharge? I have used that same load tester and it’s about 0.05A inaccurate at low loads and as much as 0.4A at 10A load settings.
Is it new or used battery?
Slightly used for testing. It seems like the two that had glue on them were more heavily used due to the reduced performance. A new cell should be closer to the other two.
El primer vídeo que vi fue un video del 2012 donde tú estaba llenando en Minecraft unas bombas adentro una aldea de Aldeanos casas
Alan Alda Bombas El Gookas.
Its not seven hundred its seventy o
what's the official spec on the capacity, 5000mah? what was the 18650 capacity?
4750MAh Max. discharge@15Amps
@@deyuzhang830 4750mah for 21700 or the 18650?