Merely existing noticeably ages most battery chemistries. You can take half an hour out of every week inconveniencing yourself to protect your battery, or you

Merely existing noticeably ages most battery chemistries. You can take half an hour out of every week inconveniencing yourself to protect your battery, or you can spend an hour once a year just putting in a new one (or having it done for you in-store if you're using an Apple device) and save yourself the nagging worry.