Cajunfood03 Enercell 1350mAh 3-In-1 Universal Portable Combo Car Charger, Wall Charger and Power Bank - Non-Retail Packaging - Grey Provides up to 4 hours of emergency power Works with most devices that charge using a USB port Built-in battery recharges from any wall outlet or vehicle lighter socket / accessory outlet Fits easily in a pocket or purse, thanks to the folding plugs that completely retract Helps protect against voltage, current, and temperature overloads