Im New to Android so hello all! Loving the experience of android and the customisations and widgets/apps are briliant. I have a general question; At what percentage of battery left do you charge your phone? Im getting down to 50% and think maybe I need to charge, but then I could probly squeeze and extra day out of that! so at what point do you do it? I may think 25% would be ideal but worry I may desperatly need it and it dies!