system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't we just make cellphone and other chargers high powered, so they can charge in a matter of minutes?

I don't know if this means increasing the voltage, or the current, but why is this not feasible? Will it overheat? What is stopping us from charging our phones faster?
gpt
Something that most people don't know is that batteries don't store electricity they actually create it through an electrochemical reaction. So when you "charge" a battery the  electricity isn't being stored it's actually reversing the chemical reaction that produces the power. So with that in mind you may understand that there are limits on how fast a chemical reaction can be safely reversed and also maintain reliability of output.