The battery is fully charged, but my 24V-DRNCLN-SK1 is not powering on. Take out the battery from the unit and inspect the prongs and connections on both the battery and the unit to ensure they are not damaged. Faulty connections caused by damaged prongs can prevent the unit from starting up. Related articles What could be the reason for my 24V-X2-JB500 not functioning despite the fully charged battery? What is the fastest way to charge my 24V iONMAX battery? General Troubleshooting for Battery and Charger How can I ascertain when the battery of my 24V-X2-JB500 is completely charged? Why won't my 24V-AGR100 unit turn on, even though the battery is charged?