How can I ascertain when the battery of my 24V-X2-JB500 is completely charged? To determine when the battery of your 24V-X2-JB500 is fully charged, make sure to charge the battery before use and verify that all three LED lights illuminate when pressing the battery indicator button. Related articles How do I operate my Solar Lantern? What could be the reason for my 24V-X2-JB500 not functioning despite the fully charged battery? Where in my yard should I set up SJ-SHSBB? How do I attach the blower tube to my SBJ597E Blower? How loud is the Sun Joe 24V iONMAX Jet Blower?