Description Joye Ego Rapid USB Charger Compatible with all Joye eGo series batteries (Joye eGo, Joye eGo-T, Joye eGo-C, Joye eGo-C Twist) and Vision Spinner batteries. Use: Plug the charger into a USB power source and fasten the "atomizer-end" of an Ego Series battery to the charger. The battery LED will flash several times indicating a good connection with the charger. The charger light will turn from green to red if a charge is needed. !Always clean the battery and charger contacts of any eLiquid before use. Green Light: No battery attached or the battery attached is fully charged Red Light: Charge in progress The charger light may flash during the duration of the charge. Charge time varies depending on the size or capacity of the battery.