Powering a Camping Fridge: Tips and Tricks

Jun 13, 2025

Can you power a camping fridge? Absolutely — unless you enjoy warm milk and sweaty cheese. From solar panels to beefy batteries, powering camping refrigerators is easier than you think. Stick around for smart setups, juicy tips, and how to keep your beers cold even when you’re miles from civilisation.

The 4 Main Ways to Power Your Camping Fridge

Your Vehicle's Battery System

Using the 12V Cigarette Lighter Socket (While Driving)

One of the simplest options while on the move is plugging into your car's 12V cigarette lighter. Most compressor fridges can run directly off this while you’re driving. It’s convenient, but not suitable once the engine is off.

A Dedicated Dual Battery System (For Off-Grid Power)

A more robust solution is a dual battery setup. This uses a second battery charged by your car’s alternator. You can run your fridge from this battery without risking your starter battery. It’s ideal for longer trips or remote areas.

The Pros and Cons of Relying on Your Car Battery

While it’s possible to run a fridge off your main vehicle battery, it’s not advisable for extended periods. You risk draining the battery and getting stranded. Fine for short use, but not for multi-day camping.

Black caravan refrigerator with top freezer compartment, on a white background.

Portable Power Stations & Solar Generators

Why All-in-One Power Stations are a Popular Choice

These compact units combine batteries with multiple output options. Most include 12V, USB and AC sockets. They're plug-and-play, making them a favourite for beginner and experienced campers alike.

Sizing a Power Station for Your Fridge

To size your power station, check the fridge’s watt-hour (Wh) usage. Multiply that by the number of days you plan to use it. For example, a 50Wh fridge over five days needs at least 250Wh. Add a buffer to cover cloudy days or inefficiencies.

Recharging with Solar Panels for Continuous Power

Pairing your station with portable solar panels keeps your setup going indefinitely. Place them in full sun during the day to recharge your power station. This is especially useful for extended stays or remote locations.

Standalone Deep Cycle Batteries

Understanding AGM vs. Lithium Batteries

AGM batteries are reliable and cheaper, though heavier and slower to charge. Lithium batteries are lighter, charge faster, and last longer — but they come at a higher cost. Both are good options depending on your budget and needs.

What You Need to Charge a Standalone Battery (Solar, Mains)

You can charge deep cycle batteries via mains electricity, your vehicle alternator, or solar panels. Ensure the correct charger type is used for each battery type. Keep them fully charged before each trip for best performance.

Campsite Mains Power & Gas

Plugging in at a Powered Campsite (AC Power)

If you’re staying at a powered site, plug your fridge into the mains. It’s the easiest and most reliable method. Be sure to bring the right adapters and cords for your setup.

How 3-Way Absorption Fridges Use LPG Gas

Absorption fridges can run on 12V, 240V, or LPG gas. When off-grid, LPG is often the most efficient option. It doesn’t rely on batteries or solar, making it ideal for long stays without electricity.

Tall black and silver caravan fridge-freezer with open doors revealing fruits, drinks, and ice packs inside, on a white background.

Essential Tips for Fridge Type and Power Efficiency

Choosing the Right Fridge for Your Power Source

Compressor Fridges (12V): The Most Efficient Choice for Battery Power

Compressor fridges are the top choice for battery setups. They cool quickly and maintain consistent temperatures with low energy draw. Perfect for pairing with solar or deep cycle systems.

Absorption Fridges (3-Way): Versatility with a Power Trade-off

These fridges are great if you need flexibility. They work on 12V, AC, and LPG gas — ideal for various power situations. However, they’re less energy-efficient, especially in warmer weather.

Interior of a portable fridge showing several water bottles and a blue-lidded container, on a white background.

Thermoelectric Coolers: Are They a Viable Option?

These are the most basic type and are only suitable for short trips. They don't cool below ambient temperature and draw a lot of power. Handy for keeping drinks cool on a day trip, but not for serious camping.

Understanding Power Draw: Watts vs. Amps

Wattage (W) shows how much power something uses. Amps (A) measure current flow. To calculate energy usage: Watts = Volts × Amps. Understanding this helps in matching fridges with power sources accurately.

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