... Use 18650 battery,rechargeable flashlight sturdy and durable super brightness United states SST-50 A flashlight only ,without battery and chargerBrand: ... circuit, working voltage: 6 ~ 8.4 V,(1) high light : current 5000mA, amazing brightness 1300 lumens!(2)medium current ... general highlighted in one hour, two hours, low bright light 10 hours.Attention please choose with protection board, high discharge ...