Has the battery reached its full charge? 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 Can I use any 24V battery with my unit? How loud is my Shredder Joe SDJ616? The battery is charged but the unit isn't turning on. Is the battery for my 24V-1500FL-LTE-P1 fully charged? How loud is my Mow Joe MJ401E?