My home has 6 different places to charge. I know some of you are care-free about letting it run down this thread is for the obsessed which I doubt I am the only one. Obviously nothing makes me happier than 100 percent. When I fall below 60 I find myself thinking about the battery more. Below 50 and I am really thinking about charging. Below 35 and I am nearly panicked. Below 20 and I will knock people over if they are between me and a charger. Below 10 and the nice men in white outfits have to restrain me. I do run them down from time to time but it always bothers me.