How long will the Anker SOLIX F3800 Plus run a space heater?

About 4.5 hours from a full charge. A space heater averages about 750 W (1,500 W running, on about 50% of the time), and the 3,840 Wh battery gives about 3,264 Wh after inverter losses. That is 23% of the battery an hour.

Can I run other things at the same time?

Yes, up to about 4,500 W more of the 6,000 W output. Each thing you add shares the same battery, so the 4.5 hours for a space heater gets shorter.

Anker SOLIX · Will it run?

Can the Anker SOLIX F3800 Plus run a space heater (1500W)?

Published October 12, 2026

Short answerYes

Yes. The Anker SOLIX F3800 Plus runs a space heater for about 4.5 hours from a full charge. At about 750 W on average it uses 23% of the battery an hour, and the 6,000 W output leaves plenty of room for more.

Add your other devices

Key numbers

Runtime: 4.5 hrs; from a full charge
Battery used per hour: 23%; at 750 W average

Space heater (1500W)

Running: 1,500 W; 750–1500 W range
Start-up: 1,500 W
Average: 750 W; on 50% of the time

Anker SOLIX F3800 Plus

Battery: 3,840 Wh; about 3,264 Wh usable
Output: 6,000 W; continuous
Surge: 9,000 W; start-up peak

How we worked it out: 3,840 Wh × 0.85 ÷ 750 W average (1,500 W × 0.5 duty) = about 4.5 hours. The 0.85 covers inverter and battery losses. We do not test units ourselves; the numbers come from the official spec sheets and typical device draws. How we pick

Anker SOLIX F3800 Plus

3,840 Wh · 6,000 W output · 9,000 W surge · 136.7 lb

Full specs and runtimes

Check price on Amazon Check price at Anker

We may earn a commission if you buy through these links. It doesn’t change your price. How we make money

What else the Anker SOLIX F3800 Plus runs

One device at a time, from a full charge.

Other power stations for a space heater

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 4.5 hours above is an estimate, not a measured result.

Common questions

How long will the Anker SOLIX F3800 Plus run a space heater?: About 4.5 hours from a full charge. A space heater averages about 750 W (1,500 W running, on about 50% of the time), and the 3,840 Wh battery gives about 3,264 Wh after inverter losses. That is 23% of the battery an hour.
Can I run other things at the same time?: Yes, up to about 4,500 W more of the 6,000 W output. Each thing you add shares the same battery, so the 4.5 hours for a space heater gets shorter.