Ultrafire 3.7V 18650 2400mAh Battery
** Note on capacity: Ultrafire is known for overrating on numbers such as battery capacity and light outputs. Although this battery is printed 2400mAh it may not have this capacity when fully charged. . We do not have the correct equipments to test for actual capacity at thi stage. If you know the actual numbers of this battery please let us know and we will post information here.