18650 rc helicopter battery 3.7v 5000mah 1)Low self discharge 2)High-quality materials 3)Resonable Price Advantages: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, ...