This RYB20DW battery adapter converts RYOBI 18V Lithium batteries to be compatible with DCB200 20V lithium tools, serving as a suitable replacement for DEWALT 20V lithium battery systems. It allows you to use your existing RYOBI 18V batteries with Dewalt 20V Cordless Tools, helping to save on the cost of purchasing additional DCB200 series 20V batteries. The adapter's top port is compatible with DCB200 20V cordless power tools. The bottom port works with Ryobi P102, P103, P104, P105, P107, P108, and P109 18V batteries, converting them for use with Dewalt 20V MAX Lithium models including DCB208, DCB207, DCB205-2, DCB203, DCB201, and DCB200. Top connector compatibility: Designed for use with DeWalt DCB series 18V/20V MAX lithium battery power tools. Compatible with tools that accept DCB180, DCB181, N123282, N123283, DCB202, DCB204, DCB205, DCB206, and other 18V/20V MAX lithium-ion battery models. Extends the usability of DeWalt 20V power tools and maximizes the value of your RYOBI 18V ONE+ battery collection. Note: This adapter cannot be used to charge RYOBI batteries. Remove the adapter from the battery after use and use the original charger to charge your battery. Material Guarantee: Constructed from high-quality ABS material with a solid design for durability and safety. Lightweight and easy to carry, simple to operate. Material: ABS Color: Green + Black Package Contents: 1 x Battery Adapter Note: Light reflection and different display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.