Can a Power Station Run a Space Heater? Watt-Hour Math, and Why a 12V Blanket Goes Further

Last updated: November 5, 2026. The heater and blanket figures come from Lasko’s, Sunbeam’s, and BougeRV’s own product pages and manuals. The power station figures come from BLUETTI’s and BougeRV’s product pages and the BLUETTI AC180 user manual. We read all of them on November 5, 2026. This is not a hands-on test: we haven’t run a heater or a blanket on any of these stations. Anything marked “arithmetic” is our math on the makers’ numbers.

Short answer: a big enough station can run a 1,500 W space heater, but not for long. A 1,152 Wh station like the BLUETTI AC180 works out to about 35 to 46 minutes on a heater’s 1,500 W high setting (arithmetic, shown below). BLUETTI’s own AC180 page lists “Heater (1,800W) 0.5 Hour.” A 12 V heated blanket rated at 48 W uses about 1/31 of that power, which is why it’s the better way to stay warm on battery.

There’s a second catch that most “yes, it works” answers skip. The heater and blanket makers we checked tell you to plug into a wall outlet, and Sunbeam’s heated-blanket manual says not to use its blankets with inverters at all. Details are below.

How much power does a space heater use?

Check the rating label on your own heater. Many plug-in heaters list 1,500 W on high. For example, Lasko’s 9-inch ceramic heater page lists two heat settings, 1,500 W on high and 900 W on low, at 120 V, with current from 7.5 A to 12.5 A. (Lasko’s old 754200 listing now redirects to that page.) A thermostat lets the heater cycle off once the room warms up, so the average draw over an hour can be lower than the setting. How much lower depends on the room, the weather, and the thermostat, and Lasko doesn’t publish a figure.

Because a heater turns electricity straight into heat, a station has to supply the full wattage for as long as the element is on. There’s no trick setting that makes 1,500 W of heat cost less than 1,500 W of battery.

How long can a portable power station run a space heater?

Here’s the math for the BLUETTI AC180, a 1,152 Wh LiFePO4 station rated at 1,800 W continuous AC output. We used two methods. The plain one is battery Wh ÷ heater W, with no losses. The second uses BLUETTI’s own runtime formula from the AC180 page: capacity × 90% depth of discharge × 85% inverter efficiency ÷ (load + about 15 W of self-consumption).

All of these are arithmetic on the makers’ numbers, not test results, and they assume the heater runs nonstop. If the thermostat cycles the heater off part of the time, the clock time stretches, but the energy used for each hour of heat doesn’t change.

To put that in daily terms: running the Lasko on low for 8 hours is 900 W × 8 h = 7,200 Wh (arithmetic). That’s more than six full AC180 batteries before losses. A 48 W blanket for the same 8 hours is 384 Wh. Our off-grid solar sizing guide uses the same Wh math if you want to plan a recharge.

Can a 350 W or 500 W power station run a space heater?

No. A station’s continuous AC rating has to be higher than the load. Lasko’s low setting is 900 W, so a station rated for 350 W or 500 W continuous output can’t carry either setting. Expect the station’s overload protection to cut the AC output instead. Small stations are a much better match for a 12 V blanket, covered below.

What is BLUETTI’s Power Lifting mode, and does it help with a heater?

BLUETTI’s AC180 page says Power Lifting mode “allows AC180 to run high-power heating devices up to 2,700W, such as space heaters, hair dryers, electric kettles, electric blankets.” The AC180 user manual explains how. Power Lifting is off by default. When you turn it on, the AC180 “can run high drain pure resistive loads (≤2700W) while its rated output power remains 1800W.” The manual defines those loads as “heaters, irons or any other devices consisting of heating elements only,” and says the mode isn’t available while the AC180 is charging from a wall outlet or generator.

In plain terms, Power Lifting keeps an over-rated heating device from tripping the station, but the station still only delivers up to 1,800 W. It doesn’t create extra battery. With a 1,500 W heater, the AC180’s 1,800 W rating already covers the load, so Power Lifting doesn’t change the runtime math above.

Do heater makers say it’s OK to plug into a power station?

Not in the manual we read. Lasko’s 754200 heater manual says: “Plug heaters directly into a 120v wall outlet/receptacle only. Never use with an extension cord.” It also says not to plug the heater into a power strip, surge protector, or multiple-outlet adapter, and: “Do not plug multiple devices in the same outlet or on same circuit as heater.” The manual doesn’t mention portable power stations either way.

So BLUETTI says its station can run space heaters, and Lasko’s instructions are written for a wall outlet. If you want to use a heater on a station anyway, ask the heater maker first. At minimum, follow the rest of Lasko’s safety list:

• Plug the heater straight into the station, never through an extension cord or power strip, and keep other loads off the station while the heater runs. All of a station’s AC outlets share one inverter.
• Keep furniture, bedding, curtains, and clothes at least 3 feet from the front of the heater and 1 foot from the sides and back, as Lasko’s manual says.
• Don’t put the heater on a soft surface like a bed, and don’t leave it running unattended.
• Check that the plug fits tightly. Lasko warns that a loose connection can overheat.

Can a power station run an electric blanket?

On power, easily. Sunbeam’s Microplush heated blanket page lists 100 W for its 12-setting blankets (Twin through King). On the AC180, that would be about 7.7 hours using BLUETTI’s formula, or 11.5 hours with no losses (arithmetic).

But Sunbeam says not to. The Sunbeam heated bedding manual linked from that page says: “Do not use with extension cords or power adapters, including smart plugs, multi-outlet adapters, or plug extenders. Do not use with generators, power converters, or inverters.” Setup step 4 says to plug into a 110–120 V wall outlet, with the caution: “Do not use with extension cord, generator power or inverter.” A portable power station’s AC outlets come from an inverter. BLUETTI’s AC180 page lists electric blankets as something Power Lifting can run, but that’s the station maker’s view, not Sunbeam’s. Follow the blanket maker’s manual. If yours says no inverters, don’t use it on a station’s AC outlet.

Why a 12 V heated blanket is the better match

A blanket built for 12 V DC skips the inverter question entirely, because it plugs into the station’s 12 V car outlet. BougeRV’s 12V Portable Electric Heated Blanket lists 12 V DC, 0–4 A, “Max 48W,” 5 heat levels, a 1–3 hour timer (4–10 hours through the app), and overheat protection. BougeRV’s own FAQ says a 12 V blanket can run from “a car cigarette lighter socket or a portable power station.” It was US$109.99 on BougeRV’s store on November 5, 2026.

These are plain arithmetic at the blanket’s 48 W maximum. Neither maker publishes a car-outlet efficiency figure, so real runtime will be somewhat shorter at full heat. Lower heat levels draw less current (BougeRV lists 0–4 A), so they run longer.

BougeRV sells the blanket with its 266 Wh station as a heated blanket and B266 bundle (US$269.99 on November 5, 2026). The bundle page says “up to 26 hours of heating runtime on a full charge,” based on BougeRV’s testing at 35°F ambient. The sentence that should name the heat level is cut off on the page (“set to Level” with no number), so we can’t tell you which setting that was. For scale, 266 Wh ÷ 26 hours is an average of about 10 W (arithmetic), so it must be a low setting. BougeRV lists the B266’s discharge range as 14°F to 104°F and charging as 32°F to 104°F.

Which one should I use in an outage or on a cold camping night?

• To keep one or two people warm overnight: a 12 V heated blanket on a station’s car outlet. It’s the only setup here where the blanket maker says a power station is fine, and the power math works even on a small station.
• To take the chill off a small room for a short time: a heater on low, on a station rated well above 900 W, with every safety step above. Plan on roughly an hour or less per 1 kWh of battery (arithmetic on the AC180 figures).
• To heat the whole house: a gas furnace’s blower and controls use far less power than an electric heater. Our guide to running a gas furnace on a power station covers the amps, surge, and the inlet or transfer switch you’d need.
• If someone needs a CPAP overnight: size that load first. Our CPAP backup battery guide shows the math, and our fridge and freezer runtime guide covers food.

BLUETTI AC180 figures we used

Sources: BLUETTI’s AC180 page and AC180 user manual. If you’re choosing between 1 kWh stations, see our AC180 vs Jackery Explorer 1000 v2 and AC180 vs Elite 100 V2 comparisons. Prices and stock change often, so check before you buy.

Frequently asked questions

How long will a 1,000 Wh power station run a 1,500 W heater?

About 40 minutes with no losses (1,000 Wh ÷ 1,500 W), and less in practice. Using BLUETTI’s AC180 efficiency figures, about 30 minutes. That’s arithmetic, not a test.

Is it safe to run a space heater off a power station?

The station maker may say yes. BLUETTI’s AC180 page lists space heaters. The Lasko manual we read says to plug directly into a wall outlet only and doesn’t address power stations. Ask your heater’s maker, and follow every clearance and no-extension-cord rule in its manual.

What size power station do I need for an electric blanket?

For a 48 W 12 V blanket like BougeRV’s, even a 266 Wh station covers about 5.5 hours at full heat (arithmetic), and longer on low settings. For a 120 V blanket, check its manual first. Sunbeam’s says not to use inverters.

Related: Can a power station run a gas furnace? · How to size an off-grid solar system · CPAP backup battery