INR21700/50P

[FrodeS]

First time poster.
I've tried to search the topic. I found lots of interresting threads to read, but no precise answer.

I've aquired a escooter battery, 36V, 15Ah. It is a 10S3P configuration using 21700 cells. They are 5Ah each, and capacity seems to be good. The escooter have a 500 watt (840 watt peak) motor. Not sure of the limitations in the battery BMS.

I suspect a very small parasitic drain on 1 cell, but need to perform more testing. When I got it, all celles in 9 strings were at 4,07V, and the last one at 2,98. I've tested all of them, and they are fine capacity wise.

I will either just replace one cell and use it as it is, or keep the cells for later use. My Dyson vacuum cleaner need new batteries, so 6 21700 celles would be fine if they are powerfull enough (I know they are 20700 stock in the Dyson).

I can't seem to find data on this INR21700/50P. I find 50PL , 50PE etc.
Except this post , leading to this page. This suggest they are capable of 50(!)A discharge.
It is my understanding, wich I happily stay corrected, that the higher drain capability will descrease cycle time. 50A seems WAY too mouch for this application, making me suspect the data is not for the same cell I have.

Can anyone help me identify the cells I have?

 

[j bjork]

I don't think I have ever heard of JTYL, if that is the brand. I very much doubt that they have anything to do with the cells you linked to. It might be this, but absolutely not sure : INR21700-50P-Anhui Guochuang Digital Technology Co., Ltd. Battery Cell,PCS
They come up when I search for JTYL 50P

 

[FrodeS]

Thanks.
I dubt JTYL is a brand, it is just part of some number written on them.
It might very well be the ones you link to. The 20A discharge makes more sense. They Are, however, a different colour.

 

[Nix Liou]

Thanks.
I dubt JTYL is a brand, it is just part of some number written on them.
It might very well be the ones you link to. The 20A discharge makes more sense. They Are, however, a different colour.

Considering that I am not aware of any company manufacturing a 50P cell, and the grey color matches the 50E from EVE... it's a bit suspicious.

 

[Nix Liou]

Anyway, it could be the cell that j bjork found. The image there is of a render, not the actual wrap and color.