The charging light of your Philips MiniVac comes on to indicate that the appliance is charging. The charging light stays on as long as the appliance is in the plugged-in charger. The charging light does not give any information about the battery level of the appliance. The light will not start to blink or switch off when it is fully charged. Note: It takes up to 16 hours to completely recharge the battery of your Philips MiniVac.