Multiple Guards: Features security guards including short circuit, overcurrent, overvoltage, under voltage, overload, and overheat. When the voltage is low (14.4V) or overloaded (23.4V), it will automatically shut down, protecting itself and the powered device 100W Fast Charging Adapter: Capable of charging not just battery but also various individual devices such as mobile phones, tablets, laptops, and cameras, all supporting up to 100W of power Compatibility: Suitable for BAT609, BAT609G, BAT610G, BAT611, BAT612, BAT618, BAT619, BAT620 18V li battery (not included), supporting 18V/20V battery input, USB Type A and Type C output LED Display: This converter is equipped with an LED display screen to show battery level, charging status, charging initiation, and fault reminders, allowing you to effortlessly check charging speed Status Indication: Easily check the battery level and charging status at any time. The green sign in the top right corner indicates that your device is in fast charging mode, clear and intuitive, saving time