18650 rechargeable battery Capacity is:3100mAh,with PCB, battery charge max voltage 4.2V. Battery discharge min voltage 2.5V. 18650 rechargeable batteryCapacity is:3100mAh,with PCB, battery charge max voltage ... .5V.Size: Diameter:18.2mm, Height: 67mm.The battery is used flashlight.This battery add PCB, imported batteries, MarsFire company package trademark PVC ...