Making a BMS is by no means simple or cheap in the range of cents. It's hard to make good cells, but creating a good BMS, designing an easy way to at fuse wires

Making a BMS is by no means simple or cheap in the range of cents. It's hard to make good cells, but creating a good BMS, designing an easy way to at fuse wires, creating cooling bands and figuring out how to do so on a huge scale is just as hard