Product Description: This adapter accepts the listed Li-Ion batteries for Black & Decker 18V tools and allows you to enjoy the of extending the operating time of the Li-Ion batteries on your existing 18V tools. The maximum initial battery voltage (measured with no operating load) is 20 volts, and the nominal voltage is 18 volts. 1. Via USB, when the phone is temporarily powered off, the power bank can be charged. 2. This adapter can use the listed lithium batteries for Black & Decker 18V tools, allowing you to enjoy the of extended lithium-ion battery operating time on your existing 18V tools. 3. The maximum initial battery voltage (measured with no load) is 20 volts, and the nominal voltage is 18 volts. Beware: The USB port is used to charge mobile phones and power devices that use USB, and the USB cable is not included. This adapter will not work with any chargers. To charge the power tool battery, use the original battery charger. Compatible Models: *Bottom of the converter - Compatible with BLACK+DECKER 20V Max lithium-ion batteries. *Converter top - Fits for Ryobi 18v Series lithium battery power tools. Package Contents: 1 * Adapter (Adapter only, no battery) Please Note: 1）When not in use for a long time, separate the battery from the adapter to avoid damage to the battery. 2）This adapter does not support charging the battery. 3）Please confirm the relevant power tools and corresponding batteries when purchasing, so as not to make mistakes.