Features1No spot welding battery, greatly reducing the battery internal resistance, thus improve the battery life. 2Waterproof battery box, no need to worry about damage due to rain, more reliable to use. 3DC input and 12.6V output voltage. 5V output voltage and 2A current of the USB connector, which can charge your mobile phone. (the voltage input and output of the battery have an error of 0.2V) 4Support power display function (3LED indicator light), making it easy to get hold of the power status. 5It can be used as a portable charger with 18650/26650 batteries, suitable for supplying power for bicycle lights, USB lights, 12.6V LED lights, etc.SpecificationItem Type: Battery CaseMaterial: PlasticColor: BlackBattery: 18650x3/26650x3(NOT included)Input Voltage: 12.6VOvercharge Protection Voltage: 12.6VOverdischarge Protection Voltage: 7.5VStandby Current: 80uAUSB Output Standard Voltage: 5VMaximum USB Output: 2000mAPackage List1 x Battery Case