Product Features 14.4V 6500mAh lithium replacement battery No memory effect, it has CE FCC certification, no pollution to the environment Dimensions: 135*38*38mm/54.33*14.96*14.96in Replacement battery for Mijia 1 generation, Mijia 2 generation, Mijia 1S, Mijia 1C, Mijia 1T, Mijia G1 Replacement Battery for Roborock S50, Roborock S51, Roborock S52, Roborock S55, for Roborock S4 S5 S6 S7 Replacement Battery for Roborock T4 Roborock T6 Roborock T7 Roborock T60 Roborock T61 Roborock T65 mm. Replacement Battery for Roborock E4 Mijia S7/S7 Plus T7S T7S Plus Product Specifications Chemistry: Li-Ion Voltage: 14.4V Capacity: 6500mAh Color: Red Instructions: Replace the old battery Suitable for: Xiaomi Sweeping Robot Package includes: 1* Vacuum batteries Compatible with Suitable for robot vacuum cleaners Xiaomi Mijia, Xiaowa and Roborock: for Mijia 1st generation, Mijia 2nd generation, Mijia 1S, Mijia 1C, Mijia 1T, Mijia G1 for Xiaowa C10, Xiaowa E20, Xiaowa E35, for Roborock S50, Roborock S51, Roborock S52, Roborock S55, Roborock S4/S5/S6, for Roborock T4, Roborock T6, Roborock T7, Roborock T60, Roborock T61, Roborock T65, etc. Package includes 1 x 5200mAh battery Warranty 60 days return and 5 years warranty, 24 hours friendly after-sales service Connection: Other, high concern chemical: None Rated capacity: 5200mAh, Weight: 550g Voltage: 14.4V, Size: 43*45*137mm Usage: BRR-2P4S-5200D, Electric sweeper, Model Number: BRR-2P4S-5200S Type: Li-Ion, Brand: Aleaivy Origin: China, Rated voltage: 14.8V