Hurricane Sandy Is Coming, And I'm Charging up Every mobile device I own

iPads, Nexus tablet, HP Touchpads, iPhones, Droid, iPod... Everything that can be potentially used as a flashlight (or something to do :) is getting a full charge and turned off. I'm in the northeast near NYC. Last year 2 days before Isaac it seemed like every D battery in a 30 mile radius was sold out.