HarmLessSolutions:Interesting article on Leaf battery upgrades and EV battery redundancy in general
EVs Enhanced in Chch do battery swaps. They've also developed a "16 blade" custom battery for the LEAF that includes active temperature management. That's something no LEAF from Nissan has. They say they aren't quite ready to take pre-orders yet, but soon. Check out their recent video on their channel on YouTube.