owhite
100 W
- Joined
- Aug 3, 2020
- Messages
- 285
Folks,
i'm looking for feedback for on the upsides and downsides of pouch cells. The following is a summary of ratings for a number of pouch cells, and a comparison to two popular 18650 cells:
The links for each row are posted below. So what I'm taking from this information is there seem to be two classes of pouch cells floating around - one that operates around 5-8 C and others (in green) that are 25C. For the higher Cs that cost / Wh is basically double, but are also lighter. For any combination that gets me to 72v and >150A continuous they all cost around $600-$1,000, while some of the 25C jobs would presumably would mean massive peak amps.
The pouch cells compare just fine with 18650 cylinders, one thing I found interesting is the cycle life of 18650s is usually HALF of pouch cells - so in a sense I'm not sure prices compare well at all. Even if the cost of round cell are equal, you'd still be retiring those packs sooner than pouch cells. It seems like the products in links 3, 4, 5 the proposition could be: "hm, very high ampacity and weighs less than any comparably priced 18650, and would take more cycles".
But I'm also like the nice Ah range of the other pouch cells, and I'm leaning towards making my build with them instead of round cells.
I would very much welcome some feedback regarding any downsides.
o
Link1 https://www.aliexpress.com/item/329...68#1000022185#1000066055#0_668#3468#15609#252
Link2 https://www.aliexpress.com/item/329...68#1000022185#1000066055#0_668#3468#15609#252
Link3 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link4 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link5 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link6 https://www.aliexpress.com/item/330...earchweb0_0,searchweb201602_,searchweb201603_
i'm looking for feedback for on the upsides and downsides of pouch cells. The following is a summary of ratings for a number of pouch cells, and a comparison to two popular 18650 cells:
The links for each row are posted below. So what I'm taking from this information is there seem to be two classes of pouch cells floating around - one that operates around 5-8 C and others (in green) that are 25C. For the higher Cs that cost / Wh is basically double, but are also lighter. For any combination that gets me to 72v and >150A continuous they all cost around $600-$1,000, while some of the 25C jobs would presumably would mean massive peak amps.
The pouch cells compare just fine with 18650 cylinders, one thing I found interesting is the cycle life of 18650s is usually HALF of pouch cells - so in a sense I'm not sure prices compare well at all. Even if the cost of round cell are equal, you'd still be retiring those packs sooner than pouch cells. It seems like the products in links 3, 4, 5 the proposition could be: "hm, very high ampacity and weighs less than any comparably priced 18650, and would take more cycles".
But I'm also like the nice Ah range of the other pouch cells, and I'm leaning towards making my build with them instead of round cells.
I would very much welcome some feedback regarding any downsides.
o
Link1 https://www.aliexpress.com/item/329...68#1000022185#1000066055#0_668#3468#15609#252
Link2 https://www.aliexpress.com/item/329...68#1000022185#1000066055#0_668#3468#15609#252
Link3 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link4 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link5 https://www.aliexpress.com/item/328...AlpZCqxLrHzYHfCKl9saAorAEALw_wcB&gclsrc=aw.ds
Link6 https://www.aliexpress.com/item/330...earchweb0_0,searchweb201602_,searchweb201603_