Specifications:•Rechargeable lithium-ion battery•Battery power: 7.4V 3200mAh•Charging input: 5V to 12VDC @ 1A•Output power: 12VDC @ 1A•Dimensions: 160 x 60 x 30mm•Weight: 320gFeatures:•Wireless charger recharges the batteries in 4 hours•Ideal for doors without a nearby power source•ENTR™ keeps worki..