content: What is ideal for smartphone batteries? (x-post from askvoat) I got a fun new gadget and was wondering what is best for its battery. I've done lots of bad things for my other electronics batteries (leave the charge on 0 for a few months, for example) and want to keep with tablet in good working order. I've searched the web for the best way to keep the battery life healthy but I keep on getting different information for every source. Currently this is what I think is best: keep the battery between 40-80%, charge down to zero once a month. I've gotten sources that say 50-80%, charge overnight, and other. When I posted this on askvoat, someone downvoted it. Is something wrong with it or did they just have a bad day?