The most likely cause is the battery not being fully seated or the drill's internal safety mechanism being triggered.
Fix:
- First, check the battery is firmly clicked into place on the drill. Remove it and reinstall it.
- Press the battery level indicator button on the battery pack to confirm it shows a charge.
- If the drill still doesn't respond, the trigger may be locked. Slide the forward/reverse selector switch above the trigger firmly to the center position to unlock it, then try the trigger again.
If that didn't work:
- The battery terminals or the drill's contact points may be dirty. Use a dry cloth to wipe the metal contacts on both the battery and the drill.
- Try a different battery from the set if you have one, to isolate whether the issue is with the drill or the specific battery pack.
Heads up: If the drill was stored in a very cold or damp environment, let it warm up to room temperature and ensure it's completely dry before trying again. If none of these steps work, the tool or battery likely has an internal fault.