General description vhbw offers a high-quality, compatible battery designed specifically for use in your Xiaomi Mijia ROBOROCK S50 and ROBOROCK S51 home cleaners. This battery features a high capacity of 5200 mAh, ensuring efficient performance for your cleaning robot. It can be charged using your standard charger or a compatible charger, making it convenient for everyday use. Technical specifications Battery type: Li-Ion Capacity: 5200 mAh Voltage: 14.4 V Energy: 74.88 Wh Number of cells: 8 Weight: 377 g Compatibility and accessories Compatible with: Xiaomi Mijia ROBOROCK S50, ROBOROCK S51 Replacement for: 400-900-1755, Ruby_S, BJSTS0002-2016, BRR-1P4S-2600S, BRR2P4S-5200D, BRR-2P4S-5200S, STYTJ01ZHM, STYTJ02ZHM