I currently have a 72V 35Ah lead acid battery on my motorbike. It works nicely, but I find it quite a bit heavy and It only have about 35km autonomy at full speed. And now that winter is coming, the autonomy starts to drop.
So, I would like to upgrade to lithium.
I've spent a great amount of time looking through the forum, but didn't really find what I was looking for so far. There are a lot of threads explaining how to build lithium batteries from 18650 cells, pouch cells or whatever, but not so much using prismatic cells.
When I talk about prismatic cells, I mean stuff like that:
https://item.taobao.com/item.htm?spm=a2 ... =12#detail
My plan is to go for Lithium iron, just for safety and lifespan reasons, even if it's not the best solution regarding performance.
I think those would be pretty easy and convenient to use for me, I'd just have to connect them in series to reach 72V and BOOM. Well, more or less.
But I'm wondering about cells protection. Does anyone has a clue about that?
My controller draws a continuous 200Amps at 72V and about 400Apeak, so I would need something beefy enough to support that kind of current draw.
Let me know if you guys need any more information. I'm not a complete noob so don't worry about my ability to follow your advices and understand your recommendations, I've built many electric bikes and scooters, but so far I haven't worked on BMS systems, so this part is a bit hazy for me.
Thanks in advance!