Is the battery fully charged? Before using the unit be sure to charge the battery and ensure all 3 LED lights are turned on when pressing the battery indicator button. Related articles How do I check the battery charge level? 24VBAT-XR8 and 24VBAT-XR12 Charger Compatibility Is there a faster charger to charge my battery? Will I Damage my batteries if I leave it charging after it is fully charged? General Troubleshooting for Battery and Charger