Best Power Station for a Space Heater
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Top picks at a glance
Best for the highest outputAnker SOLIX F3800 PlusCheck price on Amazon
Best for long heater backupEcoFlow DELTA Pro 3Check price on Amazon
Best for a 3,000 W heater loadDJI Power 2000Check price on Amazon
The Anker SOLIX F3800 Plus is the best power station for a space heater. Its 6,000 W AC output is the highest of the three picks here, and its 3,840 Wh capacity gives a heater room to run. The EcoFlow DELTA Pro 3 and the DJI Power 2000 are the other picks, for buyers who want a smaller box or more growth.
The makers’ published specs, current in November 2026, are the base for this guide. PowerPicked Editorial did not put any station through tests here.
Wh is a watt-hour. It tells you how much energy a battery holds. W is a watt. It tells you how much power a device draws. AC output is the power a station can give plug-in devices. Solar input is the ceiling on power a station can take from panels.
Which station runs a space heater best?
| Spec | Anker SOLIX F3800 Plus | EcoFlow DELTA Pro 3 | DJI Power 2000 |
|---|---|---|---|
| Capacity | 3,840 Wh | 4 kWh | 2,048 Wh |
| AC output | 6,000 W | 4,000 W | 3,000 W |
The F3800 Plus leads on output at 6,000 W, though the DELTA Pro 3 holds a little more energy at 4 kWh. The DJI is the smallest pick at 2,048 Wh and 3,000 W, and it suits a buyer who runs a heater briefly. A buyer who wants the strongest output should pick the F3800 Plus, while a buyer who wants the longest backup should pick the DELTA Pro 3.
Anker SOLIX F3800 Plus
Anker SOLIX F3800 Plus
- Capacity
- 3,840 Wh
- AC output
- 6,000 W
- Solar input
- 3,200 W
- Weight
- 136.7 lb
Who it's for: RV owners and homeowners with heavy or 240V loads who can keep a large unit in one place.
The photo also shows the Home Power Panel, which Amazon sells with this model in some listings. Check what's included before you buy.
Strengths
- 120V and 240V output
- TT-30 RV port
- Supports up to six 3.84 kWh expansion batteries
Weaknesses
- Very heavy at 136.7 lb, though it has wheels
- AC charging input is 1,800 W
The F3800 Plus suits an RV owner or homeowner with heavy or 240V loads who can keep a large unit in one place. Its output is 6,000 W with both 120V and 240V, and it has a TT-30 RV port. It has wheels, and it takes solar input up to 3,200 W. It can grow with up to six 3.84 kWh expansion batteries.
In this part, the runtime numbers assume 85% of the listed capacity. Usable energy works out to 3,264.0 Wh, from 3,840 Wh times 0.85. That energy runs a 100 W load for about 32.6 hours. Per pound, it holds about 28.1 Wh. That is 3,840 Wh over 136.7 lb.
The weak points are weight and charging. It weighs 136.7 lb, though it has wheels. AC charging input is 1,800 W. The F3800 Plus review is at /guides/anker-solix-f3800-plus-review/.
EcoFlow DELTA Pro 3
EcoFlow DELTA Pro 3
- Capacity
- 4 kWh
- AC output
- 4,000 W
- Voltage
- 120V and 240V
- Expansion
- Up to 12 kWh per unit
Who it's for: Homeowners who want 120V and 240V backup and may add batteries over time.
Strengths
- Expands to 12 kWh on one unit, more as a multi-unit system
- 120V and 240V output
- Rated to keep 80% capacity after 4,000 cycles
Weaknesses
- Lower continuous output than the F3800 Plus
- More capacity than small essential loads need
The DELTA Pro 3 suits homeowners who want 120V and 240V backup and room to add batteries over time. Output is 4,000 W, and it expands to 12 kWh on one unit, with more as a multi-unit system. The cycle rating keeps 80% capacity after 4,000 cycles.
This part’s runtime numbers are based on an assumed 85% of the listed capacity. Usable energy is about 3,400 Wh, from 4 kWh times 0.85. That energy runs a 100 W load for about 34.0 hours. Its 4 kWh capacity is more than the 3,840 Wh of the F3800 Plus.
The trade-offs are output and size. Its output is lower than the F3800 Plus, and it holds more than a small load needs. It holds the most energy of the three, so it suits a fixed spot in the home. Read the DELTA Pro 3 review at /guides/ecoflow-delta-pro-3-review/.
DJI Power 2000
DJI Power 2000
- Capacity
- 2,048 Wh
- AC output
- 3,000 W
- Expansion
- Up to 22,528 Wh
- Weight
- About 48.5 lb
Who it's for: People who want high output from a 2 kWh station and may add batteries later.
Strengths
- 3,000 W output
- Takes up to 10 expansion batteries
- Rated to keep over 80% capacity after 4,000 cycles
Weaknesses
- Solar charging needs a separate DJI module or charger
- Heavy to carry at about 48.5 lb
The DJI suits buyers who want strong output from a 2 kWh station with room to add batteries later. Its 3,000 W output is the lowest here, but it takes up to 10 expansion batteries, growing to 22,528 Wh in total. The cycle rating keeps over 80% capacity after 4,000 cycles.
We assume 85% of the listed capacity for the runtime numbers in this section. Usable energy works out to 1,740.8 Wh, from 2,048 Wh times 0.85. That energy keeps a 100 W load going for about 17.4 hours. It holds about 42.2 Wh per pound, from 2,048 Wh over 48.5 lb.
The weak points are weight and solar. At about 48.5 lb, it is not a light box to carry. Charging from panels needs a separate DJI part. Read the DJI Power 2000 review at /guides/dji-power-2000-review/.
How to choose
Start with AC output, since a space heater draws a lot of power. The F3800 Plus offers 6,000 W, the DELTA Pro 3 offers 4,000 W, and the DJI offers 3,000 W. Next, check capacity. A 100 W load runs for about 34.0 hours on the DELTA Pro 3, about 32.6 hours on the F3800 Plus, and about 17.4 hours on the DJI, so a buyer who heats a room for hours should pick one of the two larger boxes. Then think about weight and placement. The F3800 Plus weighs 136.7 lb but has wheels. The DJI at 48.5 lb is the easiest to move here. Finally, think about growth. The DJI takes up to 10 expansion batteries, the F3800 Plus takes up to six 3.84 kWh batteries, and the DELTA Pro 3 expands to 12 kWh on one unit.
FAQ
Which station here has the highest AC output?
The Anker SOLIX F3800 Plus has the highest, at 6,000 W. The EcoFlow DELTA Pro 3 offers 4,000 W, and the DJI Power 2000 offers 3,000 W.
Can the F3800 Plus add batteries later?
Yes. Up to six 3.84 kWh expansion batteries can join it. That is the most batteries of the three picks here, though the DJI grows to a larger total at 22,528 Wh.
Which pick holds the most energy here?
The EcoFlow DELTA Pro 3 holds the most energy, with 4 kWh. The Anker SOLIX F3800 Plus holds 3,840 Wh, and the DJI Power 2000 holds 2,048 Wh.
Is the F3800 Plus easy to move?
No, not really. At 136.7 lb it is a heavy box, though it has wheels. It suits a fixed spot in the home or RV, rather than a station that moves often.
