8 years li-polymer battery export experience,have own postdoctoral station for R&D have UL,CE,GS,SGS good price real factory li-polymer battery,electric bikeMaterial: Limn2o4motor power:180-300Wrun mileage:25-40kmsmall silver fish aluminum alloy case Characteristic:1. long cycle life2. high energy density3. high safety feature4. low self discharge5. no memory effect6. consistent electrochemical ...