Chester County PA is one of the hottest spots in Pennsylvania, yet it’s impossible to find any chargers there.

This is one of those situations where if you don’t immediately have an idea of how to do it, you probably shouldn’t even consider it. I’m all for DIY, but based on your question it seems you don’t have a base level of electrical and battery knowledge – to the point that of me to offer either specific advice or to even point you in the right direction.