Black and Decker 20V to Hercules 20V Battery AdapterThe Black and Decker 20V to Hercules 20V Battery Adapter is designed to give you more flexibility with your tools and batteries. By allowing you to run Hercules 20V cordless tools using Black and Decker 20V lithium batteries, this adapter helps you save money and maximize the use of your existing battery system. Built with pure copper connectors and durable ABS housing, it ensures a secure, reliable power transfer every time. Lightweight, practical,