Parameter? This PVC Ebike battery is 52V 20AH, suitable for 50W-1500W motor. Max constant discharge current:40A. Waterproof Material? The outer layer of the battery pack made of waterproof PVC material, insulation, anti-corrosion and wear resistance. The inner layer has the advantages of low melting point, waterproof seal and high adhesion. NOTE? Don’t fix the battery on bike directly, it is easy to suffer from collision or extrusion, will shorten battery life. We suggest to put it in a bag, a case. The Ebike battery charge cycle exceeds 1000 times, life expectancy of up to 5 years. Nominal Voltage (V) : 52v. Nominal Capacity (AH) :20Ah. Cell Combination :14s8p (112pcs). Battery Energy (Wh) :1040Wh. Continuous Discharge Current (A) : 40A(BMS). Instantaneous Maximum Discharge Current (A) : 90A. Charge Time under Standard Charge Current :7h. Fit for Motor Power :50W-1500W. Battery Size (LWT) : 28015570MM. Charger:58.8V 3A. Battery Weight(kg) : 5.6KG. 1 x 52V 20Ah Lithium Battery & 40A BMS. 1 x 58.8V 3A Fast Charger With AC plug.