A 12-volt freezer/fridge can extend your time in the backcountry, reduce your dependence on ice, and pull double duty at home — but choosing the right one takes more thought than you might expect. We break down the key factors, from capacity and compressor efficiency to features, accessories, and everything in between.

What To Look For In A 12-Volt Overland Fridge

There is no shortage of gear designed for overland travel, but perhaps no single piece of equipment has a bigger impact on comfort and convenience than a 12-volt overland fridge.

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The latest addition to ARB’s line of fridges is the Zero model, which is packed with unique features such as outlets on both ends and reversible hinges.

Available in four different sizes and both single-zone and dual-zone, there is an ARB Zero fridge for nearly any application. These super-efficient fridges use reinforced corners and can even be monitored and controlled via an app on your smartphone.

Unlike a traditional cooler that requires a constant supply of ice, a quality 12V fridge for overlanding keeps food and drinks consistently cold for days at a time while eliminating melted ice and soggy groceries.

A 12-volt overland fridge can extend the amount of time you spend in remote areas without having to restock, it can be used around town for grocery shopping, and it can even be plugged in at home to supplement your refrigerator during the holidays.

Even if you’ve already decided a fridge is right for you, there are several important factors to consider before choosing the best overland fridge for your vehicle. What works perfectly for one traveler may not be the right solution for another.

 

Choosing The Right Fridge Size For Your Overland Build

12-volt overland fridges from leading brands such as ARB, Dometic, and ICECO are available in sizes ranging from approximately 25 to 100 quarts.

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A fridge slide is a great addition in situations where the fridge is not easily accessible where it is mounted.

A tilting slide such as this one from Alu-Cab adds even more flexibility, both for shorter overlanders and for situations where the lid is too tall to open due to limited overhead space.

Because compressors are relatively similar in size regardless of the refrigerator’s capacity, larger fridges devote a greater percentage of their overall volume to usable storage.

Bigger is generally better—provided you have the room. Before purchasing, carefully measure where you plan to mount the fridge and consider how much weight you’ll be lifting if it won’t remain permanently installed. Many overland fridges weigh more than 50 pounds before food and drinks are added.

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Whether you are using a fridge or a cooler, pack in reverse order so that the things you will need first are on top.

This minimizes the amount of time you need to have the lid open, letting cool air escape. Pack items in chronological order based on when you plan to use or consume them.

Another consideration is how the lid opens. Most fridges use a rear hinge, while others feature side-opening lids. ’

Depending on your vehicle, a side-opening design can make access much easier when mounted on top of a drawer system or beneath a camper shell where overhead clearance is limited.

 

Amperage Draw And Battery Protection: What You Need To Know

Perhaps the most important characteristic of a 12-volt overland fridge is its power consumption. An efficient refrigerator keeps food cold without draining your battery to the point that your vehicle won’t start.

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ARB’s Dual Zone Zero fridge displays the temperature for each compartment, which can be set individually from the monitor or via an app on your smartphone.

The controls also let you choose between Fahrenheit and Celsius displays, and the voltage at which you would like the fridge to turn off in order to preserve enough power to start the vehicle.

Unfortunately, manufacturers don’t always publish comparable power consumption figures, and when they do, testing conditions such as ambient temperature and thermostat settings are often omitted.

Most premium overland fridge compressors—particularly those based on the proven Danfoss/Secop design—draw less than one amp per hour on average once they have reached operating temperature.

While actual consumption varies depending on outside temperatures, how often the lid is opened, and the temperature setting, efficient compressors typically consume far less power than many buyers expect.

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Dometic has an app that allows you to monitor the temperature of your fridge.

At first we thought it was excessive, but it is actually useful if you have the fridge strapped in the back of your vehicle and want to ensure that it is functioning properly and the cord did not come loose.

As a general guideline, a quality 12-volt fridge drawing around one amp per hour can often operate for a full day or longer on a healthy 100Ah auxiliary battery under moderate conditions.

Pairing your fridge with a dual battery setup significantly extends run time while ensuring your starting battery remains protected.

Quality fridges also include adjustable low-voltage protection, allowing you to choose the voltage at which the refrigerator automatically shuts off. If you’re powering your fridge from your vehicle’s starting battery, it’s wise to use a higher cutoff voltage.

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Dometic offers an insulated cover for their freezer/fridges that is super-easy to install and fits like a glove.

It not only adds to the efficiency of the fridge with added insulation, but also keeps the exterior from getting scratched and dented on the trail.

We’d rather have warm drinks than a vehicle that won’t start. If your vehicle uses an isolated auxiliary battery, however, you can safely draw that battery much lower without affecting your ability to drive home.

ARB also offers a free smartphone app for its Zero series that allows users to monitor battery voltage and internal temperature remotely.

Initially we thought this feature was unnecessary, but it has proven surprisingly useful when the fridge is strapped into the cargo area, allowing us to confirm it’s still operating properly without climbing into the back of the vehicle.

 

Key Features To Look For In A 12-Volt Overland Fridge

Modern overland fridges include a variety of convenience features that make daily use much easier.

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Solar panels are useful for keeping your fridge running when you have set up base camp for several days.

The beauty here is that the sunnier it is, the more power your solar panels will generate. Which is useful since the hotter it is, the more power your fridge will consume in order to maintain temperature.

We appreciate removable storage baskets that keep food organized and simplify unloading, while drain plugs make cleaning the interior after a trip much less of a chore.

Removable lids are another useful feature, and companies like Dometic and ARB offer fridges with reversible lids that can be latched from either side, making installation more flexible regardless of where the fridge is mounted.

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Power solutions such as this Jackery unit have become popular in camp, but we were surprised at how quickly our Iceco fridge drained the battery, despite being relatively efficient.

This is a good option for a limited amount of time in cooler environments, but it is best used as a backup rather than your primary power source.

A quality 12-volt overland fridge should also operate on both 12-volt DC and 110-volt AC power. This allows you to preload food at home before a trip or use the fridge as supplemental refrigerator space during holidays and gatherings.

Digital displays are another worthwhile upgrade, providing precise temperature control that’s much easier to use than the analog knobs found on older refrigerators.

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Dometic fridges have hinged handles on the body’s exterior, making it easy to use them as tie-down points.

However, this also makes the overall footprint of the fridge bulkier relative to brands like ARB that use recessed handles.

Interior LED lighting makes it easy to locate food after dark while consuming very little power, and some models even include USB charging ports for phones and other small electronics.

That said, more features don’t always mean a better product. On extended, unsupported expeditions, simplicity often translates into greater long-term reliability.

 

Must-Have Accessories For Your Overland Fridge Setup

There are numerous 12-volt fridge accessories that can improve both convenience and performance.

Transit bags provide additional insulation while protecting the refrigerator from scratches and trail damage.

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You definitely don’t want your fridge moving around on the trail. ARB’s tie-down system is ideal for ensuring your fridge is secured at all times.

Zero fridges have recessed mounting points that accept stainless steel tie-down mounts, and the Classic Series II fridges use black powdercoated steel clamps over the handles and plastic-coated ends.

Tie-down kits securely anchor the fridge during rough off-road travel, while dedicated wiring kits allow you to install a permanent 12-volt outlet in your cargo area so your fridge remains powered even when the engine is off.

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One feature we wish was more popular is the strut found on ARB’s top-of-the-line Elements fridge.

This allows the lid to stay open without the need to balance it on your head, as we have become so accustomed to.

One of our favorite upgrades is a fridge slide, which allows the refrigerator to extend out of the cargo area for easier access.

A quality fridge slide also provides a secure mounting platform that keeps the refrigerator firmly in place over rough terrain.

 

Is A 12-Volt Fridge Worth It? Final Thoughts

For many overlanders, a 12-volt overland fridge quickly becomes one of the most-used pieces of equipment they own.

Beyond eliminating the need for ice, it keeps food fresher, reduces waste, and makes everything from grocery shopping to multi-day backcountry travel significantly more convenient.

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Wondering if fridges are tough enough to stand up to abuse on the trail?

This older ARB unit owned by Randy Ellis should alleviate any such concerns. Randy has reported that he has had the fridge completely submerged in a water crossing, and it never skipped a beat!

Before buying, take careful measurements inside your vehicle, compare power consumption and available features, and consider which accessories—such as a transit bag or fridge slide—best suit your travel style.

Choosing the right fridge from the start will help avoid buyer’s remorse and keep your food, drinks, and adventures cool no matter where the trail leads.

 

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This article originally appeared in OVR Issue 13. For more informative articles like this, consider subscribing to OVR Magazine in print or digital versions here. You can also find the print edition of OVR at your local newsstand by using our Magazine Finder. 

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