If you keep a device constantly charging, or top it off every night, the battery has a chemical memory to it and will hold less of a charge.
So it’s important to regularly deplete the battery, and then charge it up.
Thankfully, batteries don’t remember when you swear at them when you need a device the most.
If your phone has a healthy battery, the people who find your body at the bottom of the canyon can charge up to call your next of kin.
Who can sell your phone for more recycling value, knowing that the battery is healthy.