Chemistry: Lithium-ion Cell Output Voltage: 5V Output Current: 1000mA max Capacity: 7.9 WH (2200mAH) Charge Time: 4.2hours AC Adaptor: Charge through USB port Cycle Life: At least 500 times Operating Temperature: -10℃～40℃ Storage and Transportation Temperature: -20℃～50℃ Dimension: 100 X 62 X 15mm Weight: 90g