Am wondering why they don’t just preserve their charge until the next time someone decides to use them.
In: Engineering
To understand this properly, you need to understand what entropy is.
A battery is essentially 2 chemicals that are forced to either end of a tube against their will, they will “move back” if given the chance, and the easiest way for them to do so is to release electrons on one end and take electrons on the other side, which eventually allows them to return to their natural arrangement.
If you don’t connect anything to either side, over time the chemicals will just tend towards the natural state.
Some batteries stay “charged” longer than others, but some of them will do this very quickly.
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