system
Given the following post, respond as if you're commenting on Reddit:
human
If we ever make the switch to electric cars, wouldn't it make more sense to have battery exchange stations instead of battery charge stations?

The way I've heard it, these batteries take hours to charge up. Nobody wants to sit at a charging station for that long. Wouldn't it make more sense to have a bunch of fully charged batteries waiting for the next customer and have either a machine, or a few strapping young lads switch out the battery? Would there be any obstacles to a system like that? Would it cost more/less/the same? Good/bad for businesses/customers?
gpt
There would have to be a standardisation of batteries regarding size, power, connections and probably capacity, maybe more stuff too. That's all doable, it just needs to be agreed on by the industry. 

The biggest problem would be how to ensure that the batteries you were getting out were still in a good enough condition to be swapped out - they're expensive pieces of kit and swapping out a relatively new one for a really old one that is about to fail and has a tiny remaining capacity would suck!