Portable Solar Panel Cell Phone Charge $ 8.87 Product information: Standard: solar cell Polycrystalline PET lamination The polished surface is dull 3H hardness processed by ETFE, scratch resistance electric Working voltage Vmp: 5.5V Working current Imp: 1500mA Open circuit voltage Voc: 6.2V Short-circuit current Isc: 1650mA Maximum power Pm: 7.5W Power tolerance: 3% Maximum efficiency. : 19% Packing list: Charger X1