How to stop fast battery draining of your smart phone

Do you charge your phone although it has battery more than 60%?It not good for the battery of the phone at all.This unnecessary charging can make your battery life short and it will make battery draining fast.So to charge a smart phone wait until the battery is at-lest 20%. This make the battery life long.Also once a month please restart your phone.That is compulsory.It will make your phone battery life longer.Also when you charge your phone only use the compatible given charger.Don't use any charger that has the port.You need to consider the voltage as well.Other thing is don't use your phone for calling and other stuff while charging.This can explode the phone.