... can perfect or protect the lithium polymer battery 18650! ! Can replace the battery if the battery is no power, activate the button to ... activate, no need to charge activates Use 4pcs 18650 2600MAH battery,Capacity up to 10000MAH charge time:8-10 hours ... burn out the circuit board.Package included:1x Battery Box (not including battery )Supported models:NOKIA,HTC,varied USB charge devicesNOT ...