in other words, suppose we want to make a battery whose weight (volume too, ideally) can be adjusted downward if needed at the expense of battery life. Let’s say if I only want an hour of charge, why lug 4 hours worth of battery.
How expensive would it be to make a battery that is easy to disassemble into several components? If some components are essential for battery operation (maybe a DC-AC converter or something of that nature) they can stay, but I want to understand how much of the gadget could hypothetically be made optional/pluggable. And how much of a cost penalty would it be to do something like that?