... time our portable power features: The WD-LH built-in 2200mAh lithium ion, repeatedly charge and discharge more than 800 times ... . 1: 5.0V, charging voltage 2, the charging current: 500mA3: 2200mAh, battery capacity 4, the output voltage: 5.5V ( maximum ) 5, the ... voltage in the range of 5.5V digital mobile equipment 2200mah battery portable power station for mobile phone