Question

how does a battery work?

Note:- don't copy the answer from Internet.

Answer 1

1.Use the charger that came with your phone. The charger may charge slowly, not at all, or damage your device or battery.
2.For my thinking when you get a new phone, I used to calibrate in its battery.
3.You should keep your phone cool. The heat is an enemy of battery.
4.Try to keep the battery half full.

Answer 2

Battery drags the electrons accross the wires. Which are already on wire made of metal. More the voltage of battery more vigorously it will drag and more will the current will flow through wires.