How long will a power station run a space heater?

Draws

1,500W

To start

1,500W

On 1,024 Wh

35min

42 of 56 units can run it. The smallest is the Goal Zero Yeti 1000 (998 Wh, about 34 min). 17 hold 1 hour of a space heater with the calculator's 20% headroom.

A 1,500 W ceramic heater on high is the hardest common load for a battery: it needs a 1,500 W inverter just to run, and it empties a mid-size unit in well under an hour. On low (900 W) it lasts about two thirds longer.

Draws from Space heater, 1500 W: maker figure, checked 6 Sep 2026. Hours are our arithmetic, not a measurement.

The cheapest unit that lasts 1 hour of a space heater

Cheapest that lasts it

Drawing · 14.4 × 12 × 11.7 in · 58 lb

BLUETTI Elite 300

$1,099 ~~$1,199~~ at BLUETTI

checked 7 Oct 2026 · $0.36 per Wh

Capacity: 3,014 Wh
AC output: 2,400 W
Surge: 4,800 W
Solar input: 1,200 W
Weight: 58 lb

Choose it if price decides: $1,099, the lowest of the 17 units that last it.

Choose the BLUETTI Elite 400 instead if you want more hours: 3,840 Wh for $300 more, 28 lb heavier.

See it at BLUETTI Check price on Amazon Details

Try Prime free before you use the Amazon buttons: 30 days free, then $14.99 a month, cancel any time (Amazon's terms, checked 12 Sep 2026). A paid link, like the Amazon buttons.

Hours on every unit

Rated Wh × 0.85 ÷ 1,500 W, on a full charge with no reserve. A unit whose output or surge cannot start a space heater shows a dash.

Space heater, 1500 W: hours on each tracked unit, longest first
Unit	Wh	Hours	Can it start it?	Maker price
Zendure SuperBase V6400	6,438	3.6	yes	$6,999
Jackery Explorer 5000 Plus	5,040	2.9	yes	$2,899
Zendure SuperBase V4600	4,608	2.6	yes	$4,999
EcoFlow DELTA Pro 3	4,096	2.3	yes	$2,799
Goal Zero Yeti PRO 4000	3,994	2.3	yes	$3,999.95
Anker SOLIX F3800	3,840	2.2	yes	$1,799.99
Anker SOLIX F3800 Plus	3,840	2.2	yes	$2,269.99
BLUETTI Elite 400	3,840	2.2	yes	$1,399
Jackery HomePower 3600 Plus	3,584	2	yes	$1,554
Anker SOLIX F3000	3,072	1.7	yes	$1,299.99
EcoFlow DELTA 3 Ultra	3,072	1.7	yes	$1,199
Jackery HomePower 3000	3,072	1.7	yes	$1,284
OUPES Mega 3	3,072	1.7	yes	$1,199
BLUETTI Elite 300	3,014	1.7	yes	$1,099
BLUETTI Apex 300	2,765	1.6	yes	$1,499
Anker SOLIX F2600	2,560	1.5	yes	$1,999.99
4Patriots Patriot Power Solar Generator 2200X	2,240	1.3	yes	$3,199
Zendure SuperBase Pro 2000	2,096	1.2	yes	$1,999
BLUETTI Elite 200 V2	2,074	1.2	yes	$849
Anker SOLIX C2000 Gen 2	2,048	1.2	yes	$849.99
BLUETTI AC200L	2,048	1.2	yes	$899
DJI Power 2000	2,048	1.2	yes	$1,299
EcoFlow DELTA 3 Max	2,048	1.2	yes	$799
OUPES Mega 2	2,048	1.2	yes	$729
OUPES Mega 2 Pro	2,048	1.2	yes	$699
Jackery Explorer 2000 v2	2,042	1.2	yes	$864
Jackery Explorer 1500 Ultra	1,536	52 min	yes	$1,034
Goal Zero Yeti 1500	1,505	51 min	yes	$1,499.95
Zendure SuperBase Pro 1500	1,440	49 min	yes	$1,699
BLUETTI AC180	1,152	39 min	yes	$499
Jackery Explorer 1000 v2	1,070	36 min	yes	$559
Anker SOLIX C1000	1,056	36 min	yes	$469.99
Anker SOLIX C1000 Gen 2	1,024	35 min	yes	$469.99
BLUETTI Elite 100 V2	1,024	35 min	yes	$489
DJI Power 1000	1,024	35 min	yes	$699
EcoFlow DELTA 3	1,024	35 min	yes	$564
EcoFlow DELTA 3 Classic	1,024	35 min	yes	$449
EcoFlow DELTA 3 Plus	1,024	35 min	yes	$674
Jackery HomePower 1000 Plus v2	1,024	35 min	yes	$619
Jackery HomePower 1000 v2	1,024	35 min	yes	$514
OUPES Mega 1	1,024	35 min	yes	$699
Goal Zero Yeti 1000	998	34 min	yes	$1,199.95
EcoFlow RIVER 3 Plus	286	–	no	$279
BLUETTI Elite 30 V2	288	–	no	$249.99
Jackery Explorer 300D	288	–	no AC outlet	$199
OUPES Exodus 350	288	–	no	$299
Jackery Explorer 300	294	–	no	$289
Goal Zero Yeti 300	297	–	no	$349.95
4Patriots Patriot Power Sidekick Solar Generator	299	–	no	$499
Goal Zero Yeti 500	499	–	no	$499.95
DJI Power 500	512	–	no	$299
OUPES Exodus 700	576	–	no	$399
Goal Zero Yeti 700	677	–	no	$699.95
EcoFlow RIVER 2 Pro	768	–	no	$349
BLUETTI Elite 100 mini	1,005	–	no	$429
4Patriots Patriot Power Solar Generator 1200	1,030	–	no	$1,399

What changes these hours

For heat through an outage, an electric blanket uses about an eighth of the energy. Never run a fuel heater indoors.

The 0.85 allowance covers the inverter's conversion losses on average; at very small loads its own idle draw takes a larger share, and at very large ones the battery delivers a little less. Cold batteries hold less, and an older battery holds less than its rating. To plan a whole day with other devices and 20% headroom, use the calculator with 1 hour of a space heater already added.

Also: an outage, an electric blanket instead, and every device.

Questions buyers ask

How many watts does a space heater use?

Space heater, 1500 W: 1,500 W. Your own model's label or manual has its figure; put it into the calculator's custom row to size for exactly yours.

What size power station do I need for 1 hour of a space heater?

2,118 Wh of rated capacity by the calculator's arithmetic (device watts × hours ÷ 0.85, plus 20% headroom), with at least 1,500 W of surge. 17 tracked units clear it.