Battery Capacity: 5000mAh/37.0Wh; Voltage: 7.4voltsCan charge 1 or 2 batteries quickly and safely at a timeWhen the battery power reach 90%, the charger will inteligently cut off the rapid charging and tranfers to trikle charging, the indicator light will turn to green at this time, please keep charging about 0.5 to 1 hour, then fully chargedConvenience and easy to recharge your battery with USB cable by car charger, USB wall charger or power bank etcHigh quality and protect against short circuiting, over-heating, over-currents, or over-chargingType: Li-ionCapacity: 5000mAh/37.0WhVoltage: 7.4VDimension: 7*4*3.7cmInput: 100-240V/150mAOutput: 8.4V/700mADimension: 116*70*19mmColor: Black