we sell LiFePo4 batteries for e-bicycle ,12v,24v,36v,48V. Model No.: BK-YY-L3608-HK-C product name:LiFePO4 Battery Pack for electric bicycle 36V 8Ah product name:LiFePO4 Li-ion batteries Appearance: see photo Rated Voltage: 12v Rated Capacity: 10.ooAh above Max.Recharge electric current:5A(0.5c) Max.discharge electric current: 20A transportation electric voltage requirement:26.95--27.65 Way of recharge:CC/CV Size of outer battery: 405*67*55mm Weight of the battery:less than 5KG working temperature: Recharge temperature:0--45 degree Discharge temperature: -20--55 degree Comparative moisture:25%--80%RH