Most EVs don't use LiFePO4 although some are moving to it. There are also hundreds or thousands of small cells in most EV packs. With that volume you'll get mor

Most EVs don't use LiFePO4 although some are moving to it. There are also hundreds or thousands of small cells in most EV packs. With that volume you'll get more variation between the best and worst cells. You also need it to be foolproof and require no maintenance. My average discharge rate is much lower than 1C which does help. The max is around 0.9C but that is pretty uncommon.