The Targus portable dual USB power bank is a 5.0 V, 2.1A dual USB output battery (Max 2.1A) that allows you to charge your iPad/tablet and smartphone together whenever extra power is needed. Just connect the backup battery to an iPad/tablet or smartphone to continue calling, game playing, web surfing or movie watching. Max 2A input for much faster battery recharged. Samsung cells used offering reliable battery performance. Featuring 8400mAh of battery capacity, the battery provides users with an additional 10 hrs of use on iPad and can fully charge a smartphone 5 times on a single charge. The battery features a 3 level LED battery level indicator so users are never left without power. The thin and compact size is portable and can be easily packed away into luggage for easy travel.