Let your battery drain all the way down to at least 15% before charging the battery back and let the battery fully charge.
Batteries will last longer if charged all the way up and all the way down.
If you are afraid that the battery will run out during the day and you don’t have a charger around or time to let the charge fill up to 100%…a wise choice may be to invest in a spare battery or extended battery.
If you have any questions about prolonging the life of the battery, leave a comment. Thanks for reading.