ZAGG Universal External Battery Charger for Smartphones (6,000mAh) 6,000 mAh Lithium Polymer Battery - Has the power to charge an iPhone four times or an iPad once 5 LED lights indicate power level, 20%-40%-60%-80%-100% Has the ability to charge multiple USB devices simultaneously 2 USB Ports share a 2.1A output Physical Size 4 x 2.75 x 1.3 inches - Weight .48 lbs Authentic ZAGG products and warrantees on ZAGG products are only available from ZAGG Authorized resellers such as Amazon.com