Anker SOLIX F3800 Plus
- 3,840 Wh · 6,000 W output
- Solar input up to 3,200 W
- 136.7 lb · expandable
Runs a space heater ≈ 2.7 h
Check price on AmazonHow we calculate it
Runtime = capacity (Wh) × 0.85 ÷ 1,200 W
For 4 hours you need about 5,650 Wh (4,800 Wh of energy plus inverter losses). Running other devices at the same time? Add them in the runtime calculator.
Tips to run your space heater longer
- Space heaters are among the worst loads for batteries: 1,500 W drains a 1,000 Wh unit in under an hour on high.
- An electric blanket (~60 W) keeps you warm for a fraction of the energy.
- If you must heat, use the low setting (~750 W) and a small, closed room.
Frequently asked questions
How long will a 1000Wh power station run a space heater?
About 43 min, based on an average draw of 1,200 W and 85% inverter efficiency.
How many watts does a space heater use?
Typically about 1,500 W while running. Averaged over time it draws about 1,200 W because it cycles on and off.
What size power station do I need for 4 hours?
About 5,650 Wh, more than most single units. Consider an expandable model with extra batteries, solar recharging, or a generator.