We're building a repairable and more sustainable ebike battery at https://infinite-battery.com :)
There are some Amish people who rebuild Dewalt, Milwaukee etc battery packs. I'd like a repairable/sustainable platform where I can actually check the health of the battery packs and replace worn out cells as needed.
To give you an idea of the market, original batteries are about $149, and their knockoffs are around $100.
Battery-powered hand tools are heavier, clumsier, generally of lower quality, less power and are less long-lived than AC-powered tools.
To be honest, there's a little Amish in me: I have hand-powered tools as backup for all my AC tools.
I've been wondering for a while if the display on ebikes could also be a more open and durable part of it.