After a lot of research, I've settled on some CO20b cells that jimbob01 is selling here on the forum. They offer incredible capacity and discharge (40Ah and >200A discharge for just a 2p pack!) I'm building a high power ebike, hopefully around 8kW and just wanted to see if anyone could see a reason why these wouldn't work. I've checked the size and they'll fit fine. I'm picking them up tomorrow but anything I should check? He's a trusted seller and has sold 1000s without issues