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I. BATTERY SEPCIFICATION: 7.4v 2200mah Lithium ion / Li-ion Battery for Invisible IR iIluminator   No. Items Criteria 1Nominal Capacity2200mAh2Nominal Voltage7.40V3Charging voltage:8.5V±0.03v4Charging Method:CC-CV (constant voltage with limited current)5Charging Current:Standard charge: 1A Rapid charge: 2A6Charging time:stand charge: 2.5-3hrs Rapid charge: 2-2.5hrs7Max. Charge Current:2200mA (ambient temperature 25?)8Max. Discharge Current:10A 9Discharge cut-off voltage:5.50v10Charge voltage:8.5V11Size:18.5*37*69mm12Operating Temperature:Charging : 0~45?Discharging : -20~60?13Storage Temperatu