Features: 1. Voltage: The maximum initial battery voltage (no workload measurement) is 20 volts and the nominal voltage is 18 volts. 2. Replace the battery: Compatible with 20V MAX battery for replacement. 3. USB port: Equipped with a USB port for charging mobile phones and other USB-powered devices. USB cable not included. 4. Applicable objects: Designed for use with most 18V batteries. 5. Wide range of applications: Compatible with various chargers. For charging the battery, use the battery charger. Descriptions: 1. The adapter allows compatible marketed batteries to be used on 18V tools, helping extend the usability of your existing battery system. 2. For use with 18V tools. The adapter's USB port enables charging of devices such as mobile phones. Specification: Model: DM18RL Material: Plastic Color: As shown in image Package Contents: 1 x Battery Converter Adapter (battery not included) Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.