Mode:18650 Size :18*650(mm) Charge voltage:4.2V Nominal voltage:3.7V Nominal capacity:3000mAh Maximum continuous discharge current:20A Instantaneous discharge current:25A or more "instructions : (1)Please check your flashlight can support smooth contact point (2)Because of the influence of temperature and environment, battery capacity will change, there will be 100-200mAh capacity difference. (3)1-2PCS battery we use China Post without registration for transportation, can be traced to Russia but no signing information. If the arrival time has not received the battery, also send us the information for inquiry please . (4)Never worry about quality when buying from Our store. We make sure you have the latest, greatest cutting-edge battery, every time."