1:Specification:18650 2:Nominal Voltage: 3.7V 3:Capcity: 2000mAh sanyo red High power rechargeable battery Key Specifications/Special Features: ... power.Building portable power device needing high energy density and low weight. Other 1, OEM orders are welcome2, Superior ... are available.4, We could design and develop Li-ion battery per customer's product working performance & structural appearance.