DeWalt Batteries Power More Than Just Tools—Here’s What You Didn’t Know They Could Do

DeWalt has been a dominant force in the cordless tool industry since it first launched its lineup of battery-powered handhelds in 1992. Over the past three decades, the company has continually refined its technology, most recently making the bold move to phase out its 18V batteries in favor of 20V units in 2022. While these 20V batteries are best known for powering DeWalt’s top-tier cordless tools—some of which have helped solidify the brand as the best cordless drill brand on the market—they’re far from limited to just construction and woodworking applications.

DeWalt, along with several third-party manufacturers, has developed a range of accessories and adapters that allow its batteries to be used for all sorts of unexpected tasks. From jump-starting cars to powering ride-on toys, these niche accessories prove that a DeWalt battery is more versatile than most people realize. While we wouldn’t recommend buying a DeWalt battery just for these accessories, they’re a great way to get more use out of any spare batteries you might already have lying around.

Here are some of the most interesting and obscure accessories that run on DeWalt batteries.

Jumper Cables with Integrated DeWalt Battery Adapter

One of the most frustrating things about owning a car is dealing with a dead battery. Whether it’s from leaving the lights on overnight or an aging battery that just won’t hold a charge, being stranded with no way to start your car is a headache no one wants to deal with. While having a highly-rated battery jump starter is always a good idea, there’s an even simpler and more budget-friendly solution for those who already own DeWalt batteries.

Enter jumper cables with a built-in DeWalt battery adapter. These cables come in four different lengths—1.9, 2, 3.28, and 4.92 feet—and are designed to connect directly to compatible 18V and 20V DeWalt batteries. Made with 8AWG tinned copper wire, they feature a fire-retardant PET outer layer and come with a waterproof carrying bag. The clamps are made of pure copper (not just copper-plated), ensuring a strong and reliable connection.

While it’s technically possible to jump-start a car by wiring a DeWalt battery directly to the terminals, not everyone has the time or confidence to attempt that. These jumper cables provide a much simpler and safer alternative. Prices start at just $15.99 for the shortest version and go up to $29.99 for the longest.

DeWalt Flexvolt to Powershift Adapter

Like most major power tool brands, DeWalt operates multiple battery ecosystems. The 20V Max line is designed for general-purpose power tools, while the Powershift line is built for heavy-duty concrete work, featuring specialized tools like rammers and coring drills.

For those who are heavily invested in Powershift tools, using DeWalt’s dedicated Powershift batteries and chargers makes sense. However, for users who aren’t ready to fully commit to the ecosystem, DeWalt offers a handy adapter that allows Flexvolt batteries to be used with Powershift tools. The DeWalt Flexvolt to Powershift adapter, released in 2025, is compatible with all Flexvolt batteries, though DeWalt recommends using its Flexvolt 15 Ah battery for maximum runtime.

Despite its simple function, DeWalt has equipped this adapter with several practical features. It includes high-visibility reflective sections for easy spotting on a busy jobsite, a rugged body that is resistant to water, oil, dust, and drops from up to 6.5 feet, and compatibility with DeWalt’s Tool Connect tags for easy tracking. It also comes with a two-year warranty.

DeWalt 225-Watt Power Inverter

DeWalt batteries are excellent at powering tools, so it’s no surprise that they can also handle other electronics. However, they don’t do this out of the box—you need an accessory like DeWalt’s 225-watt power inverter to make it happen.

Before diving in, it’s worth noting that this inverter isn’t technically made by DeWalt. While it carries the DeWalt name, it’s actually manufactured by Baccus Global, a company that produces 12-volt and lighting products under license from well-known brands like DeWalt, Cat, and Black+Decker. Does that make it a bad product? Not necessarily, but it likely won’t have the same level of support and warranty as a true DeWalt-made accessory.

This inverter is compatible with all DeWalt batteries, but the product listing specifically recommends using DeWalt’s 20V Max XR 5 Ah battery to achieve the full 225-watt output. Even then, it’s limited to AC appliances with no more than 200 watts of continuous draw, with the remaining power going to the USB ports. It features a 25-watt PD-capable Type-C outlet, a 15-watt USB Type-A outlet, and can also connect to a DC power source (though this limits output to 140 watts). The inverter retails for just under $70.

DeWalt Battery Adapter for Power Wheels

Not all DeWalt battery adapters are built for heavy-duty jobsite use. Some are designed for fun, non-critical projects—like powering kids’ Power Wheels ride-on cars with DeWalt batteries.

This adapter works with both DeWalt’s older 18V batteries and its modern 20V ones. The yellow plastic holder has mounting holes, allowing it to be securely installed with the included screws or drywall anchors. Safety features include in-line 30-amp fuses (housed in a waterproof fuse holder) and an on/off switch. The 12AWG wires support a maximum of 20 volts, which is more than enough for most applications—including, according to one reviewer, giving a 12-volt Power Wheels a performance boost by running it on 20 volts instead.

While the marketing focuses on ride-on cars, the adapter is designed to interface with a wire terminal connector, making it compatible with almost anything that can handle the electrical output of a DeWalt battery without requiring conversion. Some users have even used it to power table lamps, DIY speaker boxes, and even a Starlink Mini. A single adapter costs $9.99, or you can get a five-pack for $25.99 (which works out to $8.66 per unit).

DeWalt Battery Charger and Maintainer

Some DeWalt battery-compatible accessories are obscure simply because they’re not actually made by DeWalt. The DeWalt battery charger and maintainer is a perfect example—it’s another product from Baccus Global that just happens to carry the DeWalt name.

This accessory uses a DeWalt 20V battery to supply power to an automotive battery, making it useful for keeping a car’s battery topped up or maintaining electronic settings while swapping batteries. This is particularly handy for modern cars with a lot of electronic features stored in memory—swapping batteries can cause them to lose custom settings like seat positions and radio presets.

The charger connects to a car’s OBD-II port and is compatible with a limited selection of DeWalt batteries, starting with the 20V Max 3.0 Ah battery and going up to the 9.0 Ah 20/60V Flexvolt battery. It costs around $46 and comes with a one-year warranty.

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