How many starting watts does a refrigerator need?

Starting draw reaches about 2,900 watts for a moment. Motors and compressors pull several times their running wattage at startup, and that surge is what trips an undersized system.

How much energy does a refrigerator use during an outage?

Over 24 hours it needs roughly 480 to 8,400 watt-hours. The spread comes from duty cycle: it draws power only 20-50% of the time. Compare that against roughly 85% of a battery's nameplate capacity, which is what you can actually use.

Can I run a refrigerator on a battery power station indoors?

Most units plug into a normal socket. If yours is wired into the wall instead, treat it as the case below. A battery power station produces no combustion gases and can run indoors; a fuel-burning generator cannot, at any time, for any duration.

Refrigeration

How long will a power station run a refrigerator?

Q: How long will a power station run a refrigerator?

A typical fridge averages about 84 W, so a 1 kWh power station runs it about 10 hours and a 2 kWh station about 20 hours. An old fridge in a warm kitchen can cut that to a few hours; an efficient one can more than double it. A freezer uses less, so it runs longer.

Q: How many watts does a refrigerator use?

A refrigerator draws roughly 100 to 700 watts while running. A fridge compressor cycles on and off. It is not drawing power continuously, which is why energy use is far lower than the running-watt figure suggests. Opening the door in a warm house pushes duty toward the high end. Size on the higher figure unless you have read the nameplate on your own appliance.

Updated September 30, 2026.

Refrigerators draw about 100–700 W while running and up to 2,900 W for a moment as the motor starts; the top of that range is an older or bigger unit. It cycles on and off, so a typical one uses about 2,000 watt-hours a day, about 84 W on average. A “1000 W” station is not a 1 kWh station: watts say what it can run at once, watt-hours how long. Check both on the label. A 1 kWh station runs it about 10 hours.

A 2 kWh station runs it about 20 hours.

That is the middle of our range for this appliance. Yours may use less or a lot more: the range, the assumptions and every unit we track are below. Hours are hours of use on one full charge, counting about 85% of the battery as usable.

Hours on our three refrigerator picks, and on a freezer

These are the 3 stations we pick for a fridge, from a 3.1 kWh unit to a 3.8 kWh one. Each cell is hours on one full charge. A freezer uses less than a fridge, so it runs longer on the same battery.

Appliance	Average draw	PECRON F3000LFP 2,611 Wh usable $899 at Amazon	EcoFlow DELTA 3 Ultra (3072Wh) 2,611 Wh usable $1,349 at Amazon	Anker SOLIX F3800 3,264 Wh usable $1,980 at Amazon
A typical fridge (our middle figure)	84 W	about 31 h	about 31 h	about 39 h
A hard-working fridge (old, warm room, door opened often)	350 W	about 7.5 h	about 7.5 h	about 9.3 h
An efficient fridge (new, cool room)	20 W	about 131 h	about 131 h	about 163 h
Chest freezer (ENERGY STAR certified)¹	25 W	about 106 h	about 106 h	about 133 h
Upright freezer (ENERGY STAR certified)²	45 W	about 58 h	about 58 h	about 72 h
A typical chest freezer (our middle figure)	52 W	about 50 h	about 50 h	about 63 h

Hours = usable battery / average draw. Usable is 85% of the maker’s rated capacity. Freezer figures from ENERGY STAR are for certified, efficient units; an older freezer, or one opened often, uses more. All 3 picks publish a peak output above the 2,900 W a hard-starting fridge compressor can pull. Prices checked October 3, 2026. Why these three: best portable power station for a refrigerator.

ENERGY STAR: freezers, read September 30, 2026: “An ENERGY STAR certified chest freezer uses about 215 kWh of electricity and costs about $30 per year to run”
ENERGY STAR: freezers, read September 30, 2026: “an ENERGY STAR certified upright freezer uses about 395 kWh of electricity and costs about $60 per year to run”

Hours of use by battery size

Battery (nameplate)	Typical	Hard-working unit	Efficient unit
500 Wh	about 5.1 h	1.2 h	21 h
1,000 Wh	about 10 h	2.4 h	42 h
2,000 Wh	about 20 h	4.9 h	85 h
3,000 Wh	about 30 h	7.3 h	128 h
5,000 Wh	about 51 h	12 h	212 h

Hours = 85% of the nameplate battery divided by average watts. Typical uses about 84 W; hard-working 700 W on 50% of the time; efficient 100 W on 20% of the time. The station must also start it: see which units can, below.

How much battery a typical one needs

Outage	Battery needed, typical
12 hours	about 1,200 Wh
24 hours	about 2,400 Wh
3 days	about 7,100 Wh

Nameplate watt-hours, so the 85% usable share is already counted. Past a day, most plans add solar or a generator rather than a bigger battery.

The range behind that

A refrigerator uses about 100–700 watts while running , and needs up to 2,900 watts for a split second when it starts. Over 24 hours it uses roughly 480–8,400 watt-hours.

Buy for the higher number in each range. 61 of the 73 products we track can run it. For example, the Zendure SuperBase V6400 would run it for 16–274 hours of use, from a hard-working unit to an efficient one.

Sized in a full plan

This load is part of a plan we ran against every unit we track, with picks: The best portable power stations for home backup; The best portable generators for home backup; Which EcoFlow DELTA 3? The whole family, judged against one plan; EcoFlow DELTA 3 vs DELTA 3 Plus: which one to buy; The home-backup class: DELTA Pro 3, SOLIX F3800, Explorer 5000 Plus and the rest; Which power station will run your refrigerator?; The best backup power for a well pump; Anker SOLIX F3800 vs F3800 Plus: the real differences; Jackery Explorer 1000 v2 vs 1000 Plus: the expandable one or the cheaper one.

The numbers behind that

A fridge compressor cycles on and off. It is not drawing power continuously, which is why energy use is far lower than the running-watt figure suggests. Opening the door in a warm house pushes duty toward the high end.

Running wattswatts

Best case100 Plan for this700

What it draws while it is actually on. The high end is an older or larger unit, not a typical one.

Starting wattswatts

Best case600 Plan for this2,900

The momentary surge when a motor or compressor kicks in. Undersized systems fail here, not on running watts.

A refrigerator draws about 700W while running, but jumps to roughly 2,900W for under a second when the compressor kicks in. That spike is what shuts down an undersized power station — not the running watts.

Duty cyclepercent of the time

Best case20 Plan for this50

How much of the hour it is actually drawing power. This is what turns running watts into energy.

Energy over 24 hourswatt-hours

Best case480 Plan for this8,400

Multiply the battery capacity you are considering by roughly 0.85 to compare like with like.

Usually plugs in

Most units plug into a normal socket. If yours is wired into the wall instead, treat it as the case below.

Check this yourself

Read the nameplate inside the door frame. A 2005 side-by-side and a 2024 Energy Star unit differ by several times.

What can run it

Hours of use on one full charge: typical, then the range from a hard-working unit to an efficient one. “Starts it” means the peak output covers even a hard-starting one; “may not start a hard-starting one” means it covers the lower end of the starting range only.

Product	Continuous	Peak	Starts it?	Hours of use
Zendure SuperBase V6400	3,800W	5,000W	starts it	about 65h 16–274h
OUKITEL P5000 Pro	3,600W	not listed by the maker	maker gives no peak figure	about 52h 12–218h
Jackery Explorer 5000 Plus	7,200W	14,400W	starts it	about 51h 12–214h
Zendure SuperBase V4600	3,800W	5,000W	starts it	about 47h 11–196h
EcoFlow DELTA Pro 3	4,000W	8,000W	starts it	about 42h 9.9–174h
Honda EU3000iS Inverter Generator	2,800W	3,000W	starts it	fuel-dependent
FIRMAN WH03242 Dual-Fuel Inverter	3,200W	4,000W	starts it	fuel-dependent
Champion 201444 5500W Inverter	4,000W	5,500W	starts it	fuel-dependent

Plan this with your other loads →

What will not work, and why

8 of 73 products cannot run this.

OUKITEL P800 — 435Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.6h before recharging.
BLUETTI AC50B — 381Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.5h before recharging.
Jackery Explorer 300D — 245Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.3h before recharging.
Anker SOLIX C300 — 245Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.3h before recharging.
Jackery Explorer 300 v2 — 245Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.3h before recharging.
BLUETTI Elite 30 V2 — 245Wh usable cannot cover a 24-hour outage for these loads, which need 480–8,400Wh. It would carry the plan for roughly 0.3h before recharging.

How many watts does a chest freezer use?

A chest freezer draws about 80–500 W while running and up to 2,200 W for a moment as it starts. It runs 15%–45% of the time, so a typical one averages about 52 W: about 1,200 Wh a day. The hours on a battery are in the table above.