Keeping a Full-Size Fridge Cold Through a Day-Long Outage: Power Stations Ranked by Tested Runtime

Skip it if you need to move it often; it weighs about 83.8 lb.

If a single day of fridge runtime is not enough margin, the Apex 300 is the step up. It sits just above the 2 kWh class at 2,764.8 Wh, and in CNET's test it kept the fridge running for 30.43 hours, longer than any 2 kWh unit and ahead of several bigger stations, including Anker's 3,072 Wh F3000. BLUETTI rates it at 3,840 W continuous across four 20 A outlets, with 30 A and 50 A outlets for RV or home-panel hookups. Its UPS switches in 20 milliseconds or less, or 0 ms on a specific 240 V setup BLUETTI describes in the manual. You can add up to six B300K batteries for 19,353.6 Wh. The cost is size: about 83.8 pounds and nearly 21 inches long, so it should live beside the fridge.

Skip it if you need well over a day of fridge runtime; it tested at a little over one day.

The Elite 200 V2 ran CNET's test fridge for 26.32 hours, close behind the C2000 Gen 2, and it has the highest continuous output here at 2,600 W. That headroom is useful if the same station also has to handle a microwave, a coffee maker or a space heater for short stretches during an outage. BLUETTI lists a UPS switchover of 15 milliseconds or less, which you can configure through the app. At 53.4 pounds it sits between the Anker and the Apex 300 for portability. In CNET's separate efficiency testing it also took the round-trip efficiency award in its size class, meaning less energy is wasted between the wall and the battery when you recharge from a generator.

Skip it if you need a full day without adding battery packs, or want it to run much else.

FridgePower is built for one job. Instead of a cube, it is a slab about 75 mm, roughly 3 inches, thick, designed to stand beside or behind a refrigerator and stay plugged in permanently. BLUETTI rates it at 2,016 Wh with 1,800 W continuous and 3,600 W surge output, enough for most refrigerator compressors. In CNET's test it ran the fridge for 23.43 hours, just short of a full day, with low internal overhead. You can add BlueCell 200 battery packs of the same slim shape for longer outages. The tradeoff is versatility: the lower continuous output limits what else it can run.

Skip it if you want an independent fridge runtime test before you buy; it was not in CNET's test.

The Explorer 2000 v2 is the lightest 2 kWh station here at about 39.5 pounds, which matters if it lives in a closet or basement and only comes out when the power goes. Jackery rates it at 2,042 Wh with 2,200 W continuous and 4,400 W surge, plus a UPS mode that switches in under 20 milliseconds. Jackery notes that is not a zero-interruption UPS for servers, but it suits household appliances. It was not part of CNET's fridge test, so we cannot rank its runtime against the others, and its efficiency at light fridge loads is unverified. Choose it when carrying weight is the deciding factor, and run your own overnight test with the fridge before you rely on it.