well, it's not the best way to treat lithium-ion battery tho. the best way to maintain a lithium-ion battery's life as long as possible is to let it run between 30% and 70%. avoid letting the battery run out, and don't let it sit there without consuming its power for a long time when it's fully charged or empty. the best way is actually to keep the electrons flowing in the battery and charge often and use it often.