Midway Tanks Exclusive

Real Power. Anywhere.

Convert your cordless tool batteries into portable 12V power — run fuel pumps, sprayers, lights and more anywhere.

✓ 30A Peak / 20A Constant ✓ Weather Proof ✓ Simple Installation

See How It Works

12V30A Peak / 20A Constant

Weather ResistantReady For Work

30-DayMoney Back Guarantee

1-YearWarranty

Simple Setup

How It Works

Three steps to portable 12V power — ready in minutes

Slide In Your Battery

Snap in your DeWalt 20V or Milwaukee M18 battery

Mount It Anywhere

Four 130 lb pull-force magnets — truck bed, toolbox, equipment frame

Connect & Power On

Connect your 12V equipment via quick-connect terminals, flip the switch

Built to Last

6 High Value Features

Every PowerMate ships with a full suite of safety features

On/Off SwitchInstant power control at the unit

Magnetic Mounting130 lb pull-force per magnet

Weather ResistantBuilt for outdoor field use

Low Voltage ProtectionPrevents battery over-discharge

Short Circuit ProtectionFuse + circuit breaker built in

Overheat ProtectionAuto shutoff on high temp

Choose Your Favorite Battery Platform

Pick Your PowerMate

Same converter, same specs — built for the battery you already own

Backordered — Ships 06/22

DeWalt

Works with DeWalt 20V MAX & FLEXVOLT (all Ah sizes, including PowerStack)

Only $109.99

12V 20A Output
Quick Connect Terminals
30-Day Money Back Guarantee
1-Year Warranty

Order Now — Ships Late June

Backordered — Ships 06/22

Milwaukee

Works with Milwaukee M18 (all Ah sizes except High Output 8.0Ah)

Only $109.99

12V 20A Output
Quick Connect Terminals
30-Day Money Back Guarantee
1-Year Warranty

Order Now — Ships Late June

Coming Soon

Makita

Makita 18V LXT — join the waitlist to be first to know

Only $109.99

12V 20A Output
Quick Connect Terminals
30-Day Money Back Guarantee
1-Year Warranty

Join Waitlist →

What Can You Run?

Common Applications

Any 12V device drawing 20 amps or less

Fuel Transfer Pumps

Agricultural Sprayers

LED Work & Outdoor Lights

Portable Power — Truck Beds

Camping & Off-Grid Power

Small 12V Air Compressors*

*Device must draw 20 amps or less continuous. Battery not included — sold separately.

Real Customers

What People Are Saying

★★★★★ 5.0 — 16 reviews across both versions

★★★★★

"Works great on fill rite fuel pump. Magnets are crazy strong. I prefer this to the alligator clips that i uad to hook up to tractor to fill up with. I always have a battery in the truck so this makes it easy."

Eric O.

★★★★★

"Bought for 12v lighting in my trailer.Has a good build feel to it. Has strong magnets on it, I screwed to wood( holes provided). Installed 12v strip lights and hooked them right in to connector provided, had lights in 10mins. Could see myself buying another one for the ease of use! Shipping was fast also! Thanks"

Jason S.

★★★★★

"It works great. Awesome way to not have to run all the way up to the truck batter."

Gunny 505

Have Questions?

Frequently Asked Questions

The PowerMate is a 12V power converter that accepts your cordless tool battery and outputs regulated 12V power through quick-connect terminals. Slide your battery in, mount it with the built-in magnets, connect your 12V equipment, and flip the on/off switch. It converts your tool battery voltage down to a stable 12V output capable of 20 amps continuous and 30 amps peak.

The PowerMate is currently available in two versions — DeWalt 20V MAX and Milwaukee M18. A Makita 18V LXT version is not on the market yet, but testing has been completed and it is slated for production. Expected to be available late May 2026.

The PowerMate can run any 12V device drawing 20 amps or less continuously. Common uses include fuel transfer pumps, agricultural and spot sprayers, LED work lights and outdoor lighting, portable power in truck beds, camping and off-grid setups, and small 12V air compressors. If your device draws more than 20 amps, use is not recommended.

Yes — the PowerMate is built for outdoor field use and handles rain, dust, and the conditions you'd encounter on a job site, farm, or truck bed. It is weather resistant, not waterproof — we don't recommend you take it swimming. Built to work hard, not to go scuba diving.

Runtime depends on your battery capacity and your pump's amp draw. As a real-world reference — a DeWalt 4.0Ah battery moved approximately 336 gallons through a GPI 8GPM pump on a single charge, and approximately 150 gallons through a Fill-Rite 15GPM pump. A PowerStack 3.5Ah moved approximately 180 gallons through the Fill-Rite 15GPM. Higher amp-hour batteries will give you more gallons per charge. Expect +/-10% variance based on battery charge level and conditions.

No — battery is not included and sold separately. The PowerMate is designed to work with batteries you may already own. If you need a battery we carry compatible options for each version — the DeWalt 20V MAX 5Ah, Milwaukee M18 REDLITHIUM 5.0Ah, and Makita 18V LXT 4.0Ah, all available on our site.

The PowerMate includes four high-strength magnets with 130 lb pull-force each. They attach securely to any metal surface — truck beds, toolboxes, equipment frames, trailers. You can also mount it permanently using the holes in the bracket if you prefer a fixed installation. The magnets are strong enough to stay put during normal driving and field use.

The PowerMate comes with a 1-year no-questions-asked warranty. If it fails for any reason within a year we'll replace it. We also offer a 30-day money back guarantee — if you're not satisfied for any reason within 30 days, return it for a full refund minus shipping. Just reach out to us at sales@midwaytanks.com or call 1-800-501-3511.