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: Allow 20V MAX battery and replace the battery. 3. USB port: USB port for charging mobile phones and power devices. Use usb, not including USB cable. 4. Applicable objects: Most batteries and 18V batteries 5. Wide range of applications: suitable for any charger. If you need to charge the battery for your power tool, use the original battery charger. Descriptions: 1. The adapter allows the marketed battery to be used on 18V tools, allowing you to enjoy the benefits of extending the life of your Li-Ion battery. 2. For the 18V power tool. The adapter's USB port can be used to charge devices such as mobile phones. Specification: Model:DM18RL material: plastic Colour: Package Contents: 1 x Battery Convertor Adapter (without battery) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.