Features: 1. Voltage: The maximum initial battery voltage (no workload measurement) is 20 volts and the nominal voltage is 18 volts. 2. Battery replacement: Compatible with 20V MAX batteries and allows battery replacement. 3. USB port: Equipped with a USB port for charging mobile phones and other power devices. USB cable not included. 4. Applicable batteries: Compatible with most 18V batteries. 5. Wide compatibility: Works with a variety of chargers. For charging power tool batteries, use the battery charger. Details: 1. The adapter enables compatible batteries to be used with 18V tools, helping extend the life of your Li-Ion battery. 2. Designed for use with 18V power tools. The built-in USB port allows charging of devices such as mobile phones. Specifications: Model: DM18RL Material: Plastic Color: As shown Package Contents: 1 x Battery Converter Adapter (battery not included) Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.