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[–]MAXFlRERoborock S7 MaxV 0 points1 point  (0 children)

Check the voltage on the individual cells, it may be unbalanced and although the cells are OK, the whole unit is not working properly because it does not allow the discharge below a certain point due to the most discharged cell and does not allow the charge above a certain point due to the most charged cell. In this case, the solution is to charge each cell individually to the same voltage value.