1.Li-polymer battery 2.Capacity:2200mAh 3.Nice for gift 4.pocket size ... show power status 3. Over-charge protection, Discharge protection, Over-current protection, Short circuit protection, Explosion protection4. Powerful with long operation ... efficiencySpecification:1. Cell type: Li battery2. Output capacity:2200mAh3. Input: DC 5.0V, 1000mA4. USB Output: DC 5.0V, 1000mA5. Dimension: 90 ...