The battery has been put inside by me， you need to get it out by knobing the bottom.There is a buttom at the bottom.If the tracking information shows delivery failed，please contact your local post.It stored there or sotred in the warehouse.They will resend it.Length: 13in Peak voltage: 80 million vLight color: whiteLight range: 300 mBattery capacity:18650 x 2 lithium-ion batteriesCharging time: 3 to 4 hoursFive level light: Strong， weak ， Blasting flash ， SOS flashFunction:lighting，defense，SOS