Best Power Tool Battery Converters of 2025

The Ecarke Portable Power Inverter is a versatile device that turns DeWalt 18V/20V MAX Lithium-ion batteries into a reliable power source. With two USB ports and an AC outlet, you can charge your smartphones, tablets, and small appliances with ease. The built-in 2000LM LED light is adjustable and perfect for illuminating dark areas during camping trips or emergencies. Additionally, it features low voltage protection to prevent battery damage, allowing you to use the inverter confidently without worrying about over-discharge. This makes it an excellent companion for outdoor activities and home backup needs.

Upgrade your power tools with CHoiKWong M18 Power Adapter. This well-made adapter is compatible with Milwaukee M18 battery 18v series, and is made of durable ABS plastic, making it heat resistant and perfect for indoor and outdoor use. The adapter is equipped with a 30Amp fuse that protects your battery equipment from being damaged by excessive power. It also has high-quality silicone copper wire that improves conductivity and safety, and the heat-resistant 12 AWG wire is suitable for high-power applications. With 3 fixing screw holes, this adapter can be easily fixed to walls, machines or DIY products. Use it to upgrade your power wheels, rc toys, work lights or Robotics DIY with enough power.

The waitley Battery Adapter is designed to enhance your Dewalt tools by enabling the use of 20V MAX XR batteries with 18V XRP tools. This adapter features a power port that delivers 5V/2.0A, allowing you to charge devices conveniently while you work. It is compatible with a wide range of Dewalt 18V tools, ensuring you can maximize your existing battery investment. Furthermore, the adapter allows you to convert thicker M18 batteries for use with your Dewalt 18V tools, providing even more versatility and utility in your toolbox.

The Power Wheel Adapter for Dewalt 20V Battery is made of durable ABS plastic and is compatible with Dewalt 20V/18V DCB series batteries. Equipped with a 30Amp fuse, waterproof fuse holder rubber cap, and high-quality silicone copper wire, it is safe and easy to use. With 12 gauge wire installed, this adapter can be used to upgrade power wheels, RC toys, work lights, or robotics. It comes with 2 pack power wheels adaptors, 6 pack 30Amp fuse, and 2 pack wiring terminal. Please note that this converter is not a charger.

The Azocek Battery Adapter offers enhanced safety and ease of use for your power needs. With upgraded wiring protection and a built-in switch, you can quickly turn your battery on and off, preventing potential damage. The durable ABS plastic construction ensures it withstands heat and corrosion, while the included mounting holes and accessories make installation a breeze. Additionally, this adapter is compatible with a wide range of Ryobi 18V lithium batteries, ensuring a secure and effortless fit for your projects. Experience improved performance and safety for your DIY endeavors with this reliable battery converter.

The CHoiKWong Power Wheels Adapter is a well-made, durable battery adapter that perfectly fits Milwaukee M18 18v series batteries. It features a switch for easy on and off, a 30Amp fuse for protection against overpower damage, and high-quality silicone copper wire for improved conductivity and safety. The adapter is easy to use and can be fixed to walls, machines, or DIY products. With a maximum permissible current of 20A, it provides enough power to upgrade power tools, ride-on toys, work lights, or robotics DIY. Please note that this converter is not a charger and that the battery is not included. The CHoiKWong Power Wheels Adapter is perfect for those who want better security and convenience when using their battery-powered devices.

The Azocek Step Down Converter is designed to make the most of your Milwaukee M18 18V lithium batteries. With its ability to convert 18-20V input to a stable 12V output, you can power various devices safely and efficiently. The built-in smart chip offers multiple protections, ensuring your devices are safe from issues like over-voltage and short-circuits. Plus, the snug battery fit makes installation and removal a breeze, allowing you to switch batteries quickly. With included heat-resistant wires and a fuse holder, this converter is user-friendly, making it ideal for your power tool upgrades or DIY projects.

The CHoiKWong Voltage Converter is designed to work seamlessly with Ryobi 18V batteries, providing a reliable way to power your 12V devices. It features an easy-to-install battery adapter that securely fits your battery and includes a convenient switch for quick on/off access. The converter efficiently steps down the voltage from 18V-20V to a stable 12V output, delivering up to 15A of current, which is perfect for powering various devices. Additionally, it prioritizes safety with built-in protections against overcurrent, overload, and short circuits, ensuring your devices remain safe while in use.

The Azocek Battery Adapter is designed for safety and convenience in powering your DIY projects. With upgraded wiring protection and a built-in switch, you can easily control the power from your Dewalt 20V battery. The waterproof fuse holder and high-quality materials ensure reliable performance, making it suitable for high-demand applications. It also comes with essential accessories like wire terminals and screws, simplifying your setup process. Additionally, this adapter is compatible with various Dewalt lithium batteries, allowing you to easily connect and disconnect as needed, enhancing your overall DIY experience.

The GMURA Battery Adapter Kit is designed to fit DeWalt 18V 20V batteries and is ideal for various power systems like automobiles. Made of high-quality materials, it ensures durability and safety. The protective shell shields against overvoltage, water, debris, and dust, maintaining cleanliness. The kit includes a speed controller, voltage display, and fuse for optimal performance. Adjust the voltage with the low voltage protector, which automatically powers off at your set minimum voltage, offering you safety and control during use.