Compatible Power Tool Battery Adapter: This replacement terminal block is designed for use with select 18V lithiumion battery models, providing a reliable connection for your power tools and DIY projects LongLasting Construction: Crafted from robust plastic material with precise workmanship, this adapter connector offers dependable performance and a sleek appearance for various applications Complete DIY Modification Solution: Includes 1 battery adaptor with switch, measuring approximately 10 x 4 cm, for repairing or upgrading your existing power tool battery systems Easy Installation Process: The straightforward design allows for simple connection and modification, making it accessible for both hobbyists and professionals working with RC toys or robotics equipment Use scenarios Scenario 1: or upgrade the battery system of compatible 18V cordless tools such as drills, saws, or impact drivers Scenario 2: Retrofit or power setups for RC toys or robotics projects that require a secure and switchable 18V Liion battery interface Scenario 3: worn terminal blocks in existing 18V Liion battery configurations to extend service life and improve reliability