Features:1. replacement robotic vacuum cleaner battery for Xiaomi Roborock S50 or S51 or S55 robotic vacuum cleaner. 2.5200mAh 6500mAh Large capacity rechargeable battery. No shaking, safe security. 3. The replacement robotic vacuum cleaner battery is of . It is made of high strength materials. Long time service. 4. The attachments are durable and easy to install, keeping your vacuum cleaner running longer. 5. Essential and necessary accessories of the Xiaomi Roborock S50 or S51 or S55 robot vacuum cleaner. Package Include: 1 x Replacement Vacuum Cleaner Battery Specifications: Item: Battery for Xiaomi Roborock S50 Robotic Vacuum Cleaner S51 S55 cells Type: Lithium Voltage: 14.4V Color: Red (as picture shown) Battery Capacity: 5200mAh 6500mAh Size: Approx. 13.7 x 4.4 x 4.5cm or 5.39 x 1.73 x 1.77 in Weight: Approx. 400g Note: 1. Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before bidding. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.