Vaas 5000mAh Dual Port External Rechargeable Battery Pack VM50BK for all iPad, iPhone, iPod, Android, PSP - Black High Capacity 5000mAh. Can Charge an iPhone 4S 3 Times Dual Ports Allows you to Charge 2 Devices at Once Compact, Perfect For Travel Rechargeable Li-ion Battery can be cycled over 1000 times Includes multiple tips for charging various Devices