another tip is to buy a cheap portable power pack, I think I got mine for something like $20 bucks, it had enough power to charge both my phone and sons tablet each night. I'd plug that in during the day and leave it, typically someone else would unplug it once full to free up the outlet; then I'd use the power pack to charge my devices overnight. I felt a lot better leaving the $20 power bank unattended than my expensive phone.