How can I determine if the battery for my 24V-X2-BVM190 unit is fully charged? To check if the battery for your 24V-X2-BVM190 is fully charged, press the battery indicator button. If all 3 LED lights turn on, the battery is fully charged. Related articles What could be causing my 24V-X2-BVM190 unit not turning on, despite having a fully charged battery? General Troubleshooting for Battery and Charger How loud is the Sun Joe 24V iONMAX Jet Blower? What is the life expectancy of the pump found in my unit? The battery is charged but the unit isn't turning on.