Not that I think anyone here's problem is that simple, but just a handy reminder that if you do experience battery problems (in general) with items that have removable batteries, it's never a bad idea to put the battery in the freezer for 5 - 10 min. when it acts up. Just like "turn it off then on again", "put the battery in the freezer" should be a go-to solution in hopes that you just need a quick fix.