Stihl
Battery Capacity Degradation
Robot lawnmower starts but stops after a few minutes with low battery indication, even after long charging.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Aged lithium-ion cells, Repeated deep discharges, Storage at high temperatures, Internal battery pack fault
How to Fix / Troubleshooting
Safety first: Do not open the battery pack; it is not user-serviceable.
- Check charging time: Ensure the mower remains in the docking station long enough to reach full charge (often several hours from empty).
- Observe runtime: Start a manual mowing cycle and time how long the mower runs before indicating low battery. Compare with the expected runtime in the manual.
- Reduce load: Raise the cutting height and mow in cooler parts of the day to reduce current draw and confirm whether runtime improves.
If runtime remains significantly below specification, the battery pack has likely reached end of life and should be replaced as a complete unit by a Stihl dealer.
Advertisements
Repair Difficulty
Medium
3/5
Advertisements