DCA1820 adapter enables 18V tools to use 20V MAX batteries, increasing compatibility across equipment and extending the usable life of your tools. Key benefits - Function and compatibility: Converts 18V tools to run on 20V MAX batteries, expanding battery options without changing tools. - Materials: Rugged, durable construction for demanding work conditions. - Size and design: Compact form factor for easy installation, handling, and storage. - Performance: Reliable power transfer keeps tools operating smoothly between batteries. - Quick and easy connection: Intuitive design for fast setup and battery swaps by professionals or hobbyists. - Cost saving: Reuse 20V batteries with existing 18V tools, reducing replacement costs and better utilizing your equipment. Use scenarios - On a job site, swap a single 20V MAX battery between multiple 18V tools to maximize runtime. - In a workshop, power essential 18V tools with shared 20V batteries across projects. - For hobbyists or mixed-tool environments, reuse 20V batteries to avoid buying new tool bundles.