This custom printed Jolt Charger with Digital Power Display packs the power of a wall charger into a compact and portable unit. It supplies a full charge for your iPhone, and the charger's LED digital display tells you how much charge your backup battery has left. Including a USB to Micro USB connecting cable for charging, the 2,200 mAh Li-lon Grade A battery with a 5V/1A output is perfect for busy days in and out of the office and as a promotional giveaway to spread the word about your business.