When the unit is plugged in and fully charged, the ring will illuminate solid green. This green light stays illuminated for 12 hours, after which it will automatically shut off. If your unit is plugged in and there is no green light showing, it’s likely that it’s been plugged in, in the full charge state, for over 12 hours. If this is the case, the blender will turn on and operate as usual as soon as you press the power button.