After completion of the steps (5.1) & (5.2): The unit will start charging and the output LED will be flashing in green and thebattery level indicator shows the battery level. When your gadget is fully charged, the unit stops charging automatically. Remove the In-Switch card to avoid losing power of the UPS battery. When the battery level indicator shows one or less LED light, it indicated there isinsufficient power. Thus, it should be recharged.