Clips failing is a product of mechanical wear with minimal physical space available meaning any design is a forced tradeoff of clip lifetime vs battery capacity

Clips failing is a product of mechanical wear with minimal physical space available meaning any design is a forced tradeoff of clip lifetime vs battery capacity. > cylindrical batteries are reliable Uhhh. Phones and laptops didn't move away from cylindrical cells for fun and excitement. A cylindrical battery uses less than 80% of the available space, and as a byproduct necessarily has <80% of the capacity. > What if batteries attached via small screws? Then you're requiring tools to replace the batteries, so you aren't getting easily replaced batteries that seems to be what's on the table. > A little strip on the top could contain the protection electronics and screws, and the strip could be standard across all battery sizes, Not sure what you're saying here - it sounds like a single standardized power logic board that every manufacturer uses regardless of battery size? Seems like that would necessitate low end devices have a massively over provisioned control board.