The Best Power Stations for Home Backup (2026) — What Actually Keeps a Fridge Cold

"Will it back up my house" is the wrong question, because none of these back up a house. The right question is: which circuits, for how many hours?

A realistic outage load is not a whole home. It is a refrigerator, some lights, the router and a few phones. That comes to roughly 250 W on average — and from there the arithmetic is simple.

Fridge-only assumes a full-size 150 W unit at a 35% duty cycle, so 52.5 W average. All figures are calculated from independently measured usable capacity — assumptions here.

Three days of refrigeration, or about fifteen hours of a realistic mixed load, from a pack that returned 93% of its rating in independent testing — the best efficiency measured on this site.[1]

It is also the only unit here with an independent measurement and genuine 120/240 V split-phase output, which is what a well pump, an electric dryer or a central air handler requires.[2] Expansion runs to 12 kWh on one unit and 48 kWh as a paired system.

Against it: 114 lb, $3,699, and a measured peak charge rate of about 1,600 W against 1,800 W advertised.[1]

Thirty-six hours of fridge for $1,199, with 6,000 cycles to 80% — the longest rated life on this site — and 2,600 W of output.[3][5]

For the common case, this is the better buy. Most outages are hours, not days. A day and a half of refrigeration covers the overwhelming majority of them at a third of the Delta Pro 3's price.

It is 120 V only, so nothing 240 V will run from it. And its figures come from StorageReview rather than OutdoorGearLab, so the percentage is not directly comparable with the rest of this table.[3]

1,710 Wh measured usable at 38.9 lb — 44 usable watt-hours per pound, the best carry ratio on this site.[9] If the same unit has to do outage duty in winter and camping duty in summer, this is the compromise.

For pure backup it is the weaker choice: a 400 W solar ceiling, cycles rated to 70% rather than 80%, and a measured 2 h 30 recharge against a claimed 1 h 45.[10][9]

The Anker SOLIX F3800 Plus beats the Delta Pro 3 on paper in almost every respect: 6,000 W continuous against 4,000 W, 9,000 W surge against 8,000 W, 120/240 V split-phase, expansion to 26.9 kWh, and $1,300 cheaper.[4] Its list price fell permanently from $4,799 to $2,499 in May 2026.[11]

We do not rank it, because no independent laboratory has published a usable-capacity measurement for it. The most substantial hands-on review says plainly that it is a practical assessment rather than a controlled test.[12]

If you buy it, you are buying a specification sheet. That may well be the right call — the specification is excellent. It is simply a different kind of decision from the one this site is built to support.

None of these will run central air conditioning for any useful period, an electric water heater, or an electric range. A 900 W window air conditioner will run about four hours on the Delta Pro 3 and about two on the Elite 200 V2.

If your outages run into days, or anything you need is 240 V, the EcoFlow Delta Pro 3 is the evidence-backed answer: 93% measured efficiency, 3,790 usable watt-hours, three days of refrigeration and genuine split-phase output.

If your outages are hours — which for most people they are — the Bluetti Elite 200 V2 does thirty-six hours of fridge for a third of the money and has the longest rated life here.

If the unit also has to go camping, the Jackery Explorer 2000 v2 carries better than anything else.

And whatever you buy, size it against the load you will actually run, not the fridge on its own. The gap between those two numbers is where people get caught out.