Best 12V Car Fridges for EV Road Trips

Most EV 12V sockets are limited to 120–180W, which is more than enough to run a compressor fridge continuously. A 15L Alpicool draws around 40W at equilibrium — less than a laptop charger. Hook up a 25L or 30L model and you're still well under the socket limit. And if your car supports V2L, you can power something much larger directly through the charging inlet.

What is the difference between a compressor fridge and a cool box?

A cool box (thermoelectric, also called a Peltier cooler) can only cool to about 20°C below ambient. On a warm UK summer day, that means 10°C inside — not cold enough for meat or dairy. In a heatwave in France, it stops working entirely. A compressor fridge uses the same refrigeration cycle as your kitchen fridge and holds a set temperature (typically 0–10°C for fridge, down to -20°C for freezer mode) regardless of ambient temperature. The cost difference is £30–£50, and the compressor is worth every penny.

How much power do they draw?

At equilibrium (once the contents are cold), a compressor fridge cycles on and off and draws an average of 40–60W. Initial cool-down from room temperature is higher — 80–100W for 30–60 minutes — but then settles. Over a 10-hour overnight rest, a 25L Alpicool uses around 0.5–0.6kWh. On a 77kWh EV battery, that is less than 1% of charge. Even running from the 12V socket rather than V2L, the draw is well within the socket's 150W limit.

Should I power from 12V or V2L?

For fridges up to 30L: the 12V socket works well. Plug in and forget it. For larger models (40L+) or if you want to run multiple things at once, V2L is cleaner — you get a full 3.6kW from the charging inlet, and the fridge plugs into the mains socket on the V2L cable just like a household plug. V2L also cuts out automatically at around 20% battery, so you cannot accidentally drain the traction battery. See our V2L guide and check the list of compatible cars.

Our picks

Best for most people: Alpicool 15L

Alpicool dominates the UK portable fridge market for good reason. The 15L model holds enough for a weekend away: 12 cans plus snacks, or a few days of cold drinks and dairy. It runs on 12V DC or mains AC, reaches -20°C in freezer mode, and has a digital display and app control. At around £110, it is the default recommendation for anyone who has not bought a portable fridge before.

Best for longer trips: Alpicool 22L

The 22L version is the sweet spot for a couple on a week-long trip, or a family for a long weekend. Still compact enough to fit in most EV boots without sacrificing the rest of the luggage space.

Best for families: Alpicool 30L

The 30L sits at the outer limit of what a standard 12V socket handles comfortably (start-up draws up to 100W). Fine for most sockets; if yours cuts out, switch to V2L. Holds a full week's worth of cold food for two adults.

Best budget: zcamp X20

The zcamp is a newer brand but well-reviewed. At 18.9L and under £90, it is the entry point if you want a real compressor fridge without spending Alpicool prices. Slightly louder, fewer features, but it keeps temperature reliably.

What size do I need?

Do I need anything else?

A good 12V extension lead (not a standard household extension — a proper 12V DC cable rated for 15A) lets you position the fridge anywhere in the boot without the cable straining. Most fridges come with a cable, but a longer spare is useful. If your car supports V2L, our V2L discharge cable plugs into the Type 2 inlet and gives the fridge a standard mains socket — the cleanest way to power anything from the car.