Stihl · Power Tools
When the trigger is squeezed and there are no lights on the battery, it suggests there is no power being received or a connection problem. The tool will not start.
Click steps to track your progress.
Ensure the battery is charged.
Remove and reinsert the battery firmly.
Try a different, known-good battery.
If other batteries also show no lights, inspect the tool's battery contacts for dirt or damage.