When one charge just isn't enough, Flip 20 charges and boosts your gear from SEA to JFK and every layover along the way. At 5,200mAh, Flip 20 gives about two recharges on most phones and can even boost a tablet in a pinch. It's the perfect size for any backpack, purse, or carry-on. The Flip 20 can be recharged from a USB Source in about 4 hours. The Flip 20 is great for all your smaller USB powered gear like: Smartphone 1-2 Recharges, POV Camera 3 Recharges, Headlamp 2-5 Recharges, Tablet 50% Boost.