... certificate OEM/ODM Rechargeable Electric Bicycle Battery 36V 10Ah LiFePO4 E-bike Battery and Battery PackSpecifications: Nominal Voltage36VNominal Capacity10AhInternal Resistance≤75m ... 36V) in weight, 1/6 & 1/7 of the weight of traditional li-ion battery.2.Small volume, light ... superior tolerance on character of charge and discharge.6.Completely battery certificates ISO9001,ISO14001,BATSO ,CE,UL,ROHS, ...