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 and allows battery replacement. 3. USB port: USB port for charging mobile phones and power devices. USB cable not included. 4. Applicable objects: Most batteries and 18V batteries. 5. Wide range of applications: Suitable for various chargers. For charging the battery of your power tool, use the original battery charger. Descriptions: 1. The adapter allows compatible marketed batteries to be used on 18V tools, helping extend the life of your Li-Ion battery. 2. Designed for 18V power tools. The adapter's USB port can charge 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 allowance is +/- 1-3 cm.