RV refrigerator power budget: watts beat brochure adjectives.
Compressor fridges cycle, temperature changes the duty cycle, and battery chemistry changes usable energy.
Magazine equipment plate · generic editorial illustration, not a product teardown or installation diagram.
Model a long hot day and a cold travel day separately before buying batteries.
Slide the drawing sideways to read the full plate.A refrigerator moves heatA refrigerator removes heat from its cold space and rejects that heat plus compressor input energy to the surroundings. Ventilation and ambient conditions affect energy demand; measure watt-hours over a representative day.Reference: Australian Government — refrigeration energy systems
THE BUYING DESK · RESEARCHED OCTOBER 9, 2026
Start with a portable fridge or a cabinet replacement?
A CFX5 45 is a removable chest-style option, not a drop-in replacement for an RV’s built-in refrigerator. Decide whether food access, storage volume and floor space work before calculating runtime. A portable unit is especially useful when the same fridge moves between the vehicle and camp.
Shortlist: 3 options, selected for meaningfully different fits, budgets or system approaches. Compare the exact variant and total installed cost.
Product links currently go directly to manufacturers or retailers; we do not earn commissions from these links. How recommendations work.
Dometic CFX5 45
A 45-liter portable compressor fridge/freezer for a removable camping or touring setup.
Before ordering: Allow ventilation and lid clearance. Nominal volume and minimum temperature do not predict daily energy use in your vehicle.
A shunt-based battery monitor for measuring current flow and estimating battery state from configured data.
Before ordering: Correct installation and settings are essential. Select an appropriate current rating; the monitor does not replace a BMS or circuit protection.
Buy the chest-style unit only if its lid can open in the planned location and its ventilation remains unobstructed. For a built-in replacement, obtain the exact cabinet cutout, door-swing and ventilation requirements from the appliance maker. Measure daily watt-hours under realistic conditions before committing to the battery bank.
Editorial selections based on published product information, not hands-on testing. Follow the linked specifications for the exact variant and current availability.
Fit and purchase checklist
Record the refrigerator’s average and peak electrical specifications.
Estimate real run hours, not merely the compressor nameplate wattage times 24 by default.
List all other house loads and inverter standby consumption.
Estimate usable battery watt-hours using the specific system voltage and discharge limits.
Compare solar harvest assumptions with likely campsite shade and seasonal sun.
Check ventilation, service access and the manufacturer’s installation clearances.
The costly mistake
Advertised “low power” means nothing until you know the conditions used to measure it.
Save your model, measurements and seller questions
YOUR OWN MEASUREMENTS · STORED ONLY ON THIS DEVICE
