Powering Your Camping Fridge: Top Tips

Jun 13, 2025

Warm beer? No thanks. Camping refrigerators run best on deep cycle batteries or solar panels—they’re reliable, quiet, and off-grid friendly. But which one’s best for your trip? From solar hacks to generator gaffes, we’ve got you covered. Keep reading to stay cool (literally) on your next adventure.

The Top Ways to Power Your Fridge Off-Grid

The Integrated Solution: Dual Battery Systems

How a dual battery setup works to protect your starter battery

A dual battery system separates the fridge’s power supply from your vehicle’s starter battery. This means your fridge can run continuously without risking a flat battery when it’s time to leave.

The starter battery stays protected, while the second (auxiliary) battery takes the load.

Black absorption fridge with a sleek black door on a white background.

Key Components: Deep cycle battery (AGM vs. Lithium) and DC-to-DC charger

A solid dual battery setup includes a deep cycle battery and a DC-to-DC charger.

AGM batteries are reliable and cost-effective. Lithium batteries, on the other hand, are lighter, last longer, and charge faster—but they come at a higher price.

The charger ensures your second battery is charged efficiently while driving.

Pros and Cons: Reliability vs. installation complexity and cost

This setup is highly reliable, especially for extended trips. However, it requires some installation know-how and can be costly upfront.

It’s best suited for regular campers and overlanders who want a long-term solution.

The All-in-One Solution: Portable Power Stations

Why power stations (solar generators) are the most popular choice

Portable power stations, also known as solar generators, are a favourite among casual campers. They’re lightweight, easy to use, and don’t require wiring or vehicle modifications.

Just plug in your fridge and go.

Portable fridge powered by a foldable solar panel in a grassy outdoor field with green hills in the background.

Sizing a power station for your fridge (understanding Watt-hours)

To find the right size, check your fridge’s energy use—compressor models typically draw 30–50 watts. Multiply this by the number of hours you’ll run it daily to estimate Watt-hours.

For example, a 500Wh power station should run a small fridge for one to two days.

Pros and Cons: Convenience and versatility vs. capacity limits

Power stations are incredibly convenient and versatile. However, they have limited capacity and may not last more than a couple of days without solar recharging.

Perfect for weekend trips and occasional use.

The Role of Solar Panels: Extending Your Trip

How solar panels recharge your battery or power station

Solar panels turn sunlight into electricity, topping up your battery or power station throughout the day. This lets your fridge run longer without needing other power sources.

It’s a clean and quiet energy solution, ideal for remote locations.

How many watts of solar do you need for a fridge?

A 100W panel may provide around 300–600Wh daily, depending on sunlight. For consistent results, many campers opt for 160–200W panels.

The more sun you get, the longer your setup can last without a backup.

Pros and Cons: Unlimited power vs. reliance on sunshine

Solar gives you near-unlimited power—when the sun’s out. It’s great for long trips, but not so dependable in cloudy or forested areas.

Best when paired with batteries or a power station.

How to Choose the Best Power Method for You

Key Factors That Influence Your Decision

Your Trip Duration (weekend trips vs. extended overlanding)

Short trips need less power. A single battery or portable station may be enough.

For longer journeys, a dual battery system with solar charging is more dependable.

Your Budget (from basic setups to advanced systems)

Budget matters. Power stations are affordable and simple, while full dual battery systems cost more but offer better performance.

You can always start simple and upgrade over time.

Your Camping Style (powered campsites vs. remote boondocking)

If you stick to campsites with power, a simple hook-up works fine. For remote boondocking, go for off-grid solutions like solar and batteries.

Know your locations, and plan accordingly.

Tips for Maximising Power Efficiency (Regardless of Your Source)

The importance of pre-cooling your fridge at home

Pre-cool your fridge before your trip. This saves energy and reduces the workload once you’re off-grid.

Every bit helps when you're relying on limited power.

Tall compressor fridge with door open, showing food and drinks inside, on a white background.

Why you should keep your fridge full and well-ventilated

A full fridge retains cold better than an empty one. Also, make sure there’s good ventilation around it.

This improves efficiency and reduces strain on your system.

Using an insulated cover to reduce energy consumption

An insulated cover adds an extra barrier against heat. This keeps the internal temperature stable and reduces energy use.

Especially useful in direct sun or high heat.

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