Best for big loads in power stations and solar
A 3.84 kWh LFP station with 6,000 W at 120/240 V and room for six expansion batteries; heavy, and its 240 V output pauses on 120 V wall charging.
Our score: 8.3/10 out of 10Researched, not lab-tested
- Battery capacity
- 3,840 Wh
- AC output (continuous)
- 6,000 W
- Expandable to
- 53.8 kWh
- Cell chemistry
- LiFePO4 (LFP)
Is it right for you?
Pros
- 6,000 W AC, all of it available from a 120/240 V L14-30R
- 3,840 Wh LFP; takes up to six 3.84 kWh expansion batteries
- Up to 3,200 W solar over two 165 V inputs
- Five-year warranty, per Anker
Cons
- 136.7 lb on wheels; each expansion battery adds 72.8 lb
- 240 V output can't run while charging from a 120 V outlet
- Rated 3,000+ cycles, fewer than the EcoFlow DELTA Pro 3
- No UPS switchover time or safety listing stated by Anker
- Best for
- Homes that need 240 V loads such as a well pump on battery, linked to the panel through Anker's Home Power Panel or a transfer switch fitted by an electrician.
- Not for
- Small spaces, stairs, or buyers who only need to run a fridge and lights.
Our verdict
The F3800 Plus is the battery for heavy loads. Anker rates it at up to 6,000 W of AC, with the full 6,000 W available at 120/240 V from its L14-30R and up to 2,400 W from the 120 V outlets. That is enough for 240 V equipment such as a well pump, fed to the house through Anker’s Home Power Panel or a transfer switch.
Its 3,840 Wh LFP battery takes up to six BP3800 expansion batteries of the same size, which is how Anker reaches 53.8 kWh. Two solar inputs accept up to 1,600 W each, 3,200 W in total, which is the most solar input of the stations we list. Anker gives it a five-year warranty.
The compromises are real. It weighs 136.7 lb on wheels, and each expansion battery adds 72.8 lb. Anker rates the battery at 3,000+ cycles, fewer than the 4,000 EcoFlow quotes for the DELTA Pro 3. Its 240 V output can’t be used while it charges from a 120 V outlet, and Anker’s product page gives no UPS switchover time or safety certification.
Setup and safety
Indoors, no fumes, electrician for the panel. A battery makes no exhaust, so it can sit indoors, unlike a generator. Anker connects it to house circuits through its Home Power Panel or a generator adapter port; that panel work is for a licensed electrician. Never feed the house from a wall outlet with a male-to-male cord: it backfeeds the grid and can kill line workers (how a transfer switch or interlock prevents it).
Rules for a panel hookup. A battery that feeds the home through a panel or transfer switch is a permanent backup connection, so it follows the same path as a generator hookup: a licensed electrician and, in most places, a permit or a notice to your utility, sometimes before you buy. Rules differ by province and state (see the rules by province and state). Anker also sells it in Canada; check the box shows the same model, A1790112.
Plan the outage, not the brochure. Buyers who expect a power station to run the whole house usually end up with a few circuits. Even at 6,000 W, choose the loads: heat, fridge, sump, well pump, lights. Charging at 1,800 W from a 120 V outlet takes the 240 V side offline, so recharge between uses of 240 V loads, or by solar. Compare it with smaller boxes in our power station comparison.
Specs
Anker SOLIX F3800 Plus Portable Power Station (3840Wh, 120/240V)
Battery
| Battery capacity | 3,840 Wh |
|---|---|
| AC output (continuous) | 6,000 W |
| Expandable to | 53.8 kWh |
| 240 V output | Yes |
| Cell chemistry | LiFePO4 (LFP) |
| Cycle life | 3,000 cycles |
Charging
| Solar input (max) | 3,200 W |
|---|---|
| Wall charging (max) | 1,800 W |
Other details
| Weight | 136.7 lb |
|---|---|
| App control | Yes |
| Warranty | 5 years |
Maker’s figures, checked 3 Nov 2026.
F3800 Plus questions
Can the F3800 Plus run a 240 V well pump?
Its 120/240 V L14-30R gives up to 6,000 W at 25 A; compare that with your pump’s running and starting watts on its label or manual. A hardwired pump needs the Home Power Panel or a transfer switch installed by an electrician. The 240 V output pauses while the station charges from a 120 V outlet.
F3800 Plus or EcoFlow DELTA Pro 3?
The Anker gives more output (6,000 W against 4,000 W continuous) and more solar input (3,200 W against 2,600 W). The EcoFlow DELTA Pro 3 is lighter at 113.5 lb, is rated for more cycles, and has a published 10 ms UPS switchover. Pick on your biggest load and how often you’ll move it.
How heavy is it with extra batteries?
The station alone is 136.7 lb with its wheels, and each BP3800 expansion battery adds 72.8 lb. A setup with several batteries is effectively a fixed installation, so choose its spot, ideally a heated room near the panel, before it arrives.