14.4V 6500mAh Replacement Battery for Xiaomi Roborock S5 S50 S51 S55 S6 S7 Xiaowa E20 E25 E35 Xiaomi Mijia Robot Vacuum Cleaner Battery, 14.4V 6500mAh Replacement Battery for Xiaomi Roborock S5 S50 S51 S55 S6 S7 Xiaowa E20 E25 E35 Xiaomi Mijia Robot Vacuu