... power bank for iPhone4. Selling Point: Mobile Battery Chargerportable mobile power, power your iphone anytime. ... With CE, FCC, RoHs Specifications: Battery Type: Li-polymer battery cellsCapacity:2100mAhInput:DC5V/500mAOutput:DC5V/500mACharging ... cable Function:iphone4 type of Back clamp battery. 1. External battery for iPhone4.2. Small, convenient, ... charging 2100 mAh Lithum battery pack for cell phone