Features: Li-Polymer Battery Cell with high safty and stability Built in Proprietary Software to control temperature, voltage and current. Long time standby High compliancy for electronic devices Contemparary design and ultra slim size Capacity:2200MAH Recharging time: 6-7hours Input Voltage: 4.5V~5.5V DC Output voltage: 5.35V~5.45V DC Input MAX Current: 500mAh Output max current:1000mah Operating Temperature: -10~50℃