At 6,700mAh, The Goal Zero Flip 24 Power Bank gives about two recharges on most phones and can even boost a tablet in a pinch. It's the ideal size for any backpack, purse, or carry-on. No on/off buttons to mess with, simply plug in your cable and charge up. Know before you go with a handy, easy-to-read battery indicator. Includes a built-in flip-out USB tip for easy recharging.