Leave the phone charging all night and take it in the morning when you get out of bed. This charging cycle will be the proper for most of the users. The best thing is charge the battery, if you have the possibility, when is under 80%. If is under 40%, you have to do it necessarily. Doesn’t matter if you are charging the battery. The problem is when the battery run out and is a few weeks like that.
Source: Blog.ua.es