Advantages and disadvantages Headway vs. Prismatic Lifepo4 c

[Jaak]

I want to built a 72V16Ah Lifepo4 24S battery pack and want to use it with a 40A ebike.ca controller on my EV. I now have to make a choice between cylindrical or prismatic cells with soft, or with hard shell. So far I have seen that price, weight and compactness is a little in the disadvantage for Headways, but many professional users swear by them. Why is that ?
I have searched the ES forum, but couldn’t find a thread briefly dealing with only this subject. Can anyone of you experts, experienced users or gurus tell me what the advantages are of both types of cells compared to each other with regard to robustness, weight, durability etc. and any other aspect important to know ? What should make you choose for one rather than for the other ?
Thanks.

 

[dogman dan]

For most of us, it's about the C rate. The most commonly avaliable prismatic, or pouch cells had 1-3c capability while headways were often rated at least twice that. So you'd get less voltage sag with a headway pack. Others just hated the naked pouches, that can be vulnerable to damage in many ways.

Those really interested in c rates have now moved on to lipo, where a 10 ah pack can provide 200- 400 amps or more. That can allow the use of much smaller, lighter batteries instead of using a large size to get the c rates.