The warranty period has expired, a little time later one brush failed. But the robot continued to ride and clean, in principle, the quality of cleaning did not change much (and it decreased gradually - over time, due to degradation of the battery, it began to discharge faster and the suction power decreased). Today the second brush failed, the vacuum cleaner does not go anywhere, swears that the rotation of the brushes is difficult. The brushes are clean and cleaned regularly. I assume that the electric motors are clogged, which is unclear, perhaps just dust from the magnet due to its wear. I won’t carry it for repairs - it’s better to buy a new one, but not this one.