How do I know if the battery for my 24V-AGR100 is fully charged? To check if the battery for your 24V-AGR100 is fully charged, press the battery indicator button. If all 3 LED lights turn on, the battery is fully charged. Related articles Why won't my 24V-AGR100 unit turn on, even though the battery is charged? Is the battery fully charged? Find Your Snow Joe / Sun Joe User Manual (All Models) How do I attach the blower tube to my SBJ597E Blower? How do I know if the battery for my 24V-DRNCLN-SK1 unit is fully charged?