Battery care tips & tricks

Don’t charge your phone battery from zero to 100%
So a good range to aim for when charging a Li-ion battery is from about 40% to 80% in one go. Try not to let the battery drop below 20%.
use the charger that came with your phone.never use other phone charger it may damage your phone or battery Or make sure that a third-party charger is approved by your phone's manufacturer. Cheap alternatives from Amazon or eBay may harm your phone, and there have been several reported cases of cheap chargers actually catching on fire.

Storing battery tips
Don’t leave a Li-ion battery li-ing around too long at 0%. Try to leave it at around 40-50%.
These batteries drain at about 5-10% a month when not in use. If you let the battery discharge completely and leave it uncharged for a long period of time it may eventually become incapable of holding a charge at all (that’s properly dead).

It’s unlikely you’ll leave your smartphone lying in a drawer for very long, but some people do leave their laptop, battery packs or spare batteries unused for long periods of time. So try to keep them all at least half charged.