Skip to content
OutageWatt
How long would my backup last?

Will a power station run it?

One appliance, one power station: we check the voltage, the running watts and the start-up surge before we give you a runtime.

Free · no sign-up · specs checked October 28, 2026

Some links on this page are affiliate links: we may earn a commission if you buy, at no extra cost to you. It never changes a runtime or a pick. How we make money.

Source: Generac portable generator wattage chart (RS5500/RS7000 brochure) + ENERGY STAR certified refrigerators (336–429 kWh/yr)

LiFePO46h12h18h90% OF A DAY

Yes, it runs

22 h

at 24 h of use a day, about 1.1 kWh per day, battery only

  • Voltage: Standard 120 V outlet
  • Running power: 700 W needed, 1.5 kW available
  • Start-up surge: 2.9 kW at start, 3.0 kW surge rating

Every station we track, same appliance

StationStarts it?RuntimePrice
Jackery Explorer 1000 v2Yes22 h$499
EcoFlow DELTA 3 PlusYes21 h$719
Anker SOLIX C1000 Gen 2Yes21 h$499.99
BLUETTI AC180No—$499
Anker SOLIX F2000No—$1,999
Jackery HomePower 2000 Plus v2Yes41 h$1,069
Jackery HomePower 3600 PlusYes3.0 days$1,709
BLUETTI Apex 300Yes2.3 days$1,599
Anker SOLIX F3800 PlusYes3.2 days$2,399.99
EcoFlow DELTA Pro 3Yes3.4 days$2,799
Jackery HomePower 3600 Pro MaxYes3.0 days$1,799
Jackery Explorer 5000 PlusYes4.2 days$3,149

Battery only, no solar, 88% inverter efficiency. Prices may include affiliate links (no cost to you).

The formula

Runtime (hours) = capacity (Wh) × 0.88 ÷ average draw (W). The 0.88 is the inverter: turning the battery's DC into 120 V AC loses roughly 10 to 15 percent, more at very light loads. Average draw is not the label wattage for anything that cycles: a fridge compressor runs about a third of the time, a sump pump only when water comes in.

Before runtime, a station has to pass two power tests. Its continuous output must cover the appliance's running watts, and its surge rating must cover the start-up kick of any motor. Where a maker doesn't publish a surge figure, we assume none beyond the continuous output rather than guess.

Questions people ask

How long will a power station run an appliance?

Runtime ≈ capacity (Wh) × 0.88 ÷ the appliance's average draw (W). The 0.88 covers inverter losses. A 1,070 Wh station running a 120 W TV lasts about 7.8 hours; running an ENERGY STAR fridge (about 44 W on average) it lasts about 21 hours.

Why does it say no when the battery is big enough?

Because capacity isn't the only test. A station also has to deliver the appliance's running watts and its start-up surge, and some appliances need 240 V. A 5 kWh battery with a 1,800 W inverter still can't run a 3,250 W window AC.

What if my power station isn't listed?

Choose 'Another model' and type its capacity, continuous output and surge from its spec sheet.