Sizing guide · Power
What Size Power Station Runs a 12V Fridge?
Matching a power station to a 12V fridge is simple arithmetic.
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Our shortlist
One budget pick, one best-value pick and one premium pick, all sold on Amazon.com. Specs are copied from the Amazon listing or the maker's page; prices are dated snapshots or “—” when we could not capture a US price. Product pictures are AI-generated illustrative images, not product photos.
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Budget pick
Illustrative · may differ
Budget pick Small and light
DARAN NEOK2 Portable Power Station (288Wh LiFePO4)
A small 288 Wh LiFePO4 box with 600 W AC, for phones, laptops, lights and a CPAP rather than a fridge.
Best for: Weekend campers who just need to charge devices and run lights.
Budget pick -
Budget pick
Illustrative · may differ
Budget pick Mid-size, solar-ready
GRECELL H1200 Portable Power Station (672Wh LiFePO4)
A 672 Wh LiFePO4 unit with 1200 W AC, 400 W solar input and 10 ms UPS: enough for a 12V fridge over a weekend.
Best for: Weekend campers who want to run a fridge without paying for 1 kWh.
Budget pick -
Best value
Illustrative · may differ
Best value 1 kWh you can carry
EcoFlow DELTA 3 Classic Portable Power Station (1024Wh)
A 1 kWh LiFePO4 power station with 1800 W AC output (3600 W surge) and very fast AC charging, sized for a fridge, lights and laptops over a weekend.
Best for: Weekend campers who want to run a fridge and charge devices without a second battery.
Best value -
Premium
Illustrative · may differ
Premium 3 kWh for long stays
BLUETTI Elite 300 Portable Power Station (3014Wh LFP)
Three kilowatt-hours with a TT-30 RV port and a 12V/30A DC output, in a 58 lb box BLUETTI calls the smallest 3 kWh station.
Best for: Van builds and long off-grid stays that need several days of fridge power.
Premium -
Premium
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Premium House battery on wheels
EcoFlow DELTA Pro 3 Portable Power Station (4096Wh)
A 4 kWh, 120/240 V power station that can expand to 48 kWh. On a rig it is a fixed house battery, not something you carry to camp.
Best for: Van builds and long-stay rigs that need a real house battery.
Premium -
Premium
Illustrative · may differ
Premium 2 kWh sweet spot
Jackery Explorer 2000 v2 Portable Power Station (2042Wh)
Two kilowatt-hours of LiFePO4 at 39.5 lb: enough to run a 12V fridge for several days, with a quiet charging mode for overnight use.
Best for: Off-grid weekends with a fridge running the whole time.
Premium
Matching a power station to a 12V fridge is simple arithmetic. Work out what the fridge uses per day, how much of the station’s capacity you can actually use, and how fast you can refill it.
1Estimate what the fridge uses per day
A compressor fridge doesn’t run all the time. Once it is cold, it cycles on and off. The share of time it runs is the duty cycle, and it changes with the outside heat, the set temperature, how full it is and how often you open the lid.
Wh per day ≈ fridge running watts × 24 h × duty cycleExample inputs only: 45 W × 24 h × 0.35 ≈ 378 Wh/day. Hot weather and frequent opening push the duty cycle up.Wh per day ≈ Ah per day × 12 VThe most reliable number is your own: plug the fridge into the station for a day and read the watt-hours used from its display.
2How long will a station last?
You can’t use 100% of a station’s rated capacity: some energy is lost converting it to 12V or AC. We use 85% as a planning figure. It is an assumption, so check the manufacturer’s own stated figure where one is given.
days ≈ (rated Wh × 0.85) ÷ fridge Wh per day| Rated capacity | Usable (×0.85, est.) | Fridge uses 300 Wh/day | 500 Wh/day | 800 Wh/day |
|---|---|---|---|---|
| 500 Wh | 425 Wh | 1.4 days | 0.8 days | 0.5 days |
| 1,000 Wh | 850 Wh | 2.8 days | 1.7 days | 1.1 days |
| 2,000 Wh | 1,700 Wh | 5.7 days | 3.4 days | 2.1 days |
3Use the 12V port, not the AC outlet
Most 12V fridges run directly on DC. Plugging into the station’s 12V car-style or DC port skips the inverter, which wastes energy. Check the port’s rated current against the fridge’s stated input, and follow the fridge manual for its battery-protection setting.
4Refill it: solar and driving
If you can recharge every day, you can carry a smaller station.
Wh per day ≈ panel watts × peak sun hours × 0.7The 0.7 covers panel angle, heat and charging losses; it is a planning assumption. Example: 200 W × 5 h × 0.7 ≈ 700 Wh.Wh ≈ car-input watts × hours drivenMany stations cap car charging at a modest wattage — use the stated input limit.5Pick the size
Take your daily use, multiply it by the days between recharges, and add about 20% headroom. Then compare power stations by usable capacity, 12V output and recharge inputs. Read our power station buying guide and 12V fridge guide, or put a fridge on your rig.
rated Wh ≥ (Wh per day × days) ÷ 0.85 × 1.2Frequently asked questions
How long will a 1,000 Wh power station run a 12V fridge?
Divide about 850 usable Wh (85% of rated, an estimate) by what your fridge uses per day. At 300 Wh/day that is about 2.8 days; at 500 Wh/day about 1.7 days. Measure your own fridge for a real number.
Should I run my fridge from the AC or the 12V port?
Use the 12V DC port when the fridge supports it. It avoids inverter losses, so the same station lasts longer.
Can solar keep a fridge running indefinitely?
Only if the daily solar harvest is more than the fridge uses. Estimate it as panel watts × peak sun hours × about 0.7, and remember that cloudy days harvest much less.
Put your top picks side by side.
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