Stihl · Power Tools
This indicates an internal problem with the battery itself. The battery may need to be replaced, especially if it is out of warranty.
Click steps to track your progress.
Check the purchase date of the battery to see if it is still under warranty.
If the battery is faulty, it will need to be replaced with a new compatible battery.
Ensure the battery is being charged with the correct charger and that the charger is functioning properly.
Dispose of the old battery responsibly according to local regulations.