Skip to content Black Friday · ½ price on every bundle Our only deal this BFCM · ends Monday 30 Nov Milwaukee & Makita sold out in week 1 last yearFree shipping $75+ · Tariffs & duties prepaid

Free US shipping over $75 · Tariffs & duties prepaid · Nothing extra at your door

Free shipping $75+ · Tariffs & duties prepaid

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Black Friday is on · ends Monday 30 Nov

½ price on every bundle.

Work hard. Camp easy. Pay half. Dropper, Booster, Rapid, Replenisher and more, matched to the 18V tool batteries you already own. Our only deal this BFCM.

Shop ½ price bundles Shop the Volt Dropper
Max BundleComplete kit · best value $245.99$544.99 Black Friday BundleMost popular · Founder's choice $175.99$351.99 Replenisher BundleBest small kit $140.99$280.99 Accessories BundleAlready own a Dropper? $122.99$245.99 Starlink BundleNewest bundle $140.99$280.99

4.9 from 1,723 reviews 30-day returns 2-year warranty

Which tool batteries do you run?

We will only show gear that clicks straight onto them.

Makita18V LXT MilwaukeeM18 DeWalt18V/20V RyobiONE+OzitoPXCBoschGBA/PBA
Run AEG, HiKOKI, Stanley or WORX?See every brand

Powering America’s job sites, trails and campsites

  • Tariffs & duties prepaidEvery US order ships with tariffs and import duties already paid. Nothing extra at your door.
  • Fits the batteries you already ownMilwaukee M18, DeWalt 20V MAX, Makita LXT, Ryobi ONE+, Metabo HPT and more.
  • Tracked across the USADelivered in 6 to 12 business days, with 30-day returns and a 2-year warranty.

Everything that runs off your tool batteries

Shop all
Volt Dropper12V fridges & camp gear Volt Booster120V mains power Double Adapter2x runtime ReplenisherCharge in the car Volt MiniUSB charging Volt Rapid100W USB-C

Loved by campers, overlanders & contractors

What are you powering?

Start with the job. Every Volt runs off the 18V tool batteries in your shed.

Working on a laptop at a remote campsite, powered by tool batteries
Laptop, Starlink and a cold drink, all off the batteries from the ute.
12V fridge & camp gearFridges, fans, lights and pumps. The Volt Dropper.120V mains appliancesChargers, laptops and small appliances. The Volt Booster.Laptop & Starlink100W USB-C PD on the go. The Volt Rapid. Longer runtimeRun two batteries at once. The Double Adapter. Phones & USB gearPhones, GPS and headlamps. The Volt Mini. Charge while you driveTop up tool batteries from the car. The Replenisher. How long will it run?Use the runtime calculator before you buy. Something else?Ask us. Real people, reply within one business day.
The Volt Dropper

Our best seller

The Volt Dropper

Turns the 18V tool batteries you already own into steady 12V for fridges, fans, lights and camp gear. Brand-matched fit, with 4-way battery protection.

  • Adjustable 5 to 13V with a live LED readout
  • Low-voltage cut-off protects your $300 batteries
  • Fits Makita, Milwaukee, DeWalt, Ryobi, Ozito and more
  • Runs a 42 qt fridge for around 5 to 7 hours per 5Ah battery
From$74.95 Choose your battery Check the runtime

Black Friday: every bundle ½ price.

Our only deal this BFCM, until Monday 30 Nov. Brand-matched to the batteries you already run. Milwaukee and Makita sold out in the first week last year.

All bundles
Complete kit · best value50%off

The Volt Dropper Max Bundle 120V

The flagship kit: everything for a full weekend off-grid.

$245.99$544.99You save $299 View bundle Most popular · Founder's choice50%off

Black Friday Bundle

Run and recharge 12V gear all weekend. The one most people buy.

$175.99$351.99You save $176 View bundle Best small kit50%off

Replenisher Bundle

Run your Dropper and recharge on the drive.

$140.99$280.99You save $140 View bundle Already own a Dropper?50%off

Accessories Bundle

For the person who already owns a Dropper.

$122.99$245.99You save $123 View bundle Newest bundle50%off

Starlink Bundle

Power a Starlink Mini and laptop off your tool batteries.

$140.99$280.99You save $140 View bundle

Clip on. Switch on. That’s it.

1Pick your brand

Choose the Volt made for the tool batteries you already own. Makita, Milwaukee, DeWalt, Ryobi and more.

2Clip on a battery

Slide your 18V battery on, just like a tool. No wiring, no installation, no new battery system to charge.

3Power your gear

Plug in your fridge, lights, laptop or phone. Built-in protection stops before your battery runs too low.

Will it run your gear?

Pick what you are powering and your battery size. The runtime calculator shows how many hours you will get, and shows its maths.

Try the runtime calculator

What the $20 adapters leave out

Volt Dropper
Cheap adapters
Low-voltage battery cut-off
Built in
Usually none
Over-current, short & thermal protection
All three
Hit and miss
Adjustable output with live readout
5 to 13V
Fixed, unverified
Warranty & returns
2 years + 30 days
Good luck
Real human support
Real support from real people
Overseas seller

Rated 4.9 out of 5 by our customers

1,723 verified reviews across the Volt range.

Read the reviews

Out there with our customers

@maxvoltagestore on Instagram
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Your tool batteries can do more than drill.

Find the Volt that fits your batteries and your gear, shipped tracked and duty-paid to your door anywhere in the US.

Shop the range Our story