Roborock E4 Mijia S7/S7 Plus T7S T7S Plus. Roborock S50, Roborock S51, Roborock S52, Roborock S55, for Roborock S4 S5 S6 S7. Remove the old battery, carefully install the new battery on the battery box, tighten the screws, and then connect the wires of the new battery.
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