18650 li-ion battery Voltage: 3.7V Capacity: 2200mah Cycle life>500 times 18650 li-ion battery 2200mah3.7vAdvantages:1, High energy density2, High working voltage for single battery cells3, Pollution-free4, Long cycle life5, No memory effect6, Capacity, resistance, Voltage, platform time consistency is good7, With short-circuit production function, safe and reliable8, Factory price& High quality9 ...