ROBOROCK S6 MAXV BATTERY Not Charging

5200mAh Lithium-Ion Battery Pack

Roborock batteries have an internal Battery Management System (BMS) that can enter a hard lockout state if cell voltages fall below a critical threshold or if internal resistance becomes too high. This prevents the charging circuit from initiating, resulting in a 'Not Charging' state even when docked.

Charging Dock Station

The charging dock must provide a steady 20V DC output under load. If the internal capacitors or the transformer fail, the dock may provide enough voltage for the robot to 'see' the base (approx 4.3V idle) but fail to deliver the current required to charge, causing the robot to repeatedly undock and search for a 'working' base.

SMD Resettable Fuse (P185)

This is the primary root cause for 'Error 13' on S6 models. This 1.85A fuse on the main motherboard protects the charging circuit; if it increases in resistance due to a power surge or contact shorting, the motherboard cannot pull enough current from the dock to charge the battery, requiring a component-level replacement.