Compatibility: Compatible With Xiaomi Roborock S4 S50 S51 S52 S55 S60 S4 Max S5Max S6Max S6 Maxv S6 Pure S7 Max S7 Maxv S7 Maxv Ultra T4 T6 T7 T60 T61 T65 E4 E5 Q7 Q7 Max, For Mi Mijia 1St 2Nd Generation And Xiaowa C10 E20 E25 E35 E201 E351-01 Robot Vacuums | | Product Features: The Brr-2P4S-5200S Battery Compatible With Xiaomi Sweeper Has A Long Battery Life, Line Protection, Safe Charging Protection | | Battery Specifications: Li-Ion Battery, Capacity 6500Mah/93.6Wh, Voltage 14.4V, Weight 409.8G, Size 5.59 X 1.93 X 1.69Inch | | Multiple Protection: The S50 S51 Replacement Battery Has A Built-In Smart Chip That Prevents Multiple Protections Against Overcharging, Over-Discharging, Overheating And Short-Circuiting, Ensuring Safe Battery Charging And Improving Battery Life | | Quality Service: If You Have Any Questions, Please