【Product Parameters】e-bike battery, built-in high quality 18650 A Grade 3500mah 2600mah 18650 battery cell, suitable for 500W 750W 1000W motor; Max constant discharge current: 30A. Size:460*104*64mm,390*104*64mm). Charger: 54.6V 3A. 【 Every ebike Battery Made Cycle Test:】 Each pack is ran through a full charge and discharge before leaving our facility to make sure you are getting every amp hour you paid for. The test include: Short Circuit Safety Test √ Overcharge Safety Test √ Crush Safety Test √ Needing Safety Test √ Extrusion Safety Test √