The SuperNOVA LED must be fully charged before first use. Plug the charger into the appropriate outlet. Slide the SuperNOVA LED, handle first, into the charger until the contacts snap into engagement. With the light inserted properly in the charging cradle, the red, charge-indicator LED should go on. While charging the LED glows steadily and when fully charged, the LED blinks about once per second. It is normal for the indicator to switch between steady glow and blinking as the battery reaches full charge. A full charge takes about 3 hours.