system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does regularly over-charging a battery shorten it's "life"?

I was lurking reddit with my new laptop plugged in when I was informed (by my laptop) that I was wearing out the battery by continuing to charge it after it had reached 100%. I was wondering how this could limit the life of a battery.
gpt
You can't overcharge the battery.  The charge controller won't let you, and for good reason.  Overcharging li-ion batteries tends to result in things like flames and explosions.

What wrecks li-ion batteries is heat and time.  You want to keep the battery nice and cool.  This is why Tesla watercools the batteries in their cars.