Anker SOLIX F3800 Plus Review (2026)
3,840 Wh, 6,000W at 120V or 240V, and 3,200W of solar input in a 136.7 lb wheeled unit that feeds a home panel through its L14-30R port.
The Short Version
If you want one box that can feed 240V circuits through a transfer switch and grow into a multi-day battery bank, the F3800 Plus is the one we’d buy. It puts out 6,000W through its L14-30R port at 120V or 240V, takes up to six BP3800 batteries for 26.88 kWh per unit, and accepts 3,200W of solar, the highest solar rating of any power station we cover.
The six regular 120V outlets share 2,400W between them, and only the L14-30R port delivers the full 6,000W or any 240V. That port also shuts off while the unit is plugged into a 120V wall outlet, so the F3800 Plus can’t sit on grid power as an always-on backup for a well pump.
Next to the EcoFlow DELTA Pro 3, the big gain is output: up to 6,000W against EcoFlow’s 4,000W continuous, plus 600W more solar. You give up 256 Wh of base capacity and wait 20 ms at switchover instead of 10. It was also the cheaper of the two on Amazon at our October price check.
Buy if
Buy it to run a well pump or central AC on battery at 240V, wired through a transfer switch or inlet box, when you’d rather add batteries over the years than pay for a full bank on day one. Its two 1,600W solar inputs also make it our pick for a large portable or ground-mount array.
Skip if
You need to carry it. At 136.7 lb it rolls on its wheels or stays put. Skip it too if your outage plan is a fridge, a router and a few lights; the EcoFlow DELTA 3 Classic or the Bluetti Elite 400 handles that load and costs less.
Specs at a Glance
| Spec | Anker SOLIX F3800 Plus |
|---|---|
| Capacity | 3,840 Wh (LFP) |
| Total AC Output | 6,000W max |
| 120V Outlets | 6x NEMA 5-20R, 2,400W shared |
| L14-30R Outlet | 120V/240V, 6,000W max |
| TT-30R Outlet | 120V, 3,000W max |
| Surge Rating | Not published by Anker |
| Expandable To | 26.88 kWh per unit (6x BP3800); 53.8 kWh with two units |
| Solar Input | 3,200W (2x 1,600W, 11 to 165V, 17A) |
| Wall Charging | 1,800W max (120V, 15A) |
| Generator Charging | 3,300W alone; 6,000W with an expansion battery (Generator Adapter required) |
| UPS Switchover | 20 ms (three outlets) |
| Charge Cycles | 3,000+ to 80% |
| Weight | 136.7 lb |
| Size | 27.6 x 15.3 x 15.6 in (with wheels) |
| Warranty | 5 years |
| Price | ~$2,599.99 on Amazon (varies) |
What Changed From the Original F3800
Anker kept the battery. The Plus has the same 3,840 Wh of LFP cells and the same 6,000W total output as the original F3800. Solar input climbs from 2,400W to 3,200W, split across two inputs that accept anywhere from 11 to 165V, so you can wire long strings of panels in series. A 240V generator can now pass up to 6,000W straight through to the L14-30R outlet, which the original couldn’t do.
The port mix changed too. The NEMA 14-50 outlet is gone, and a TT-30R rated for 3,000W at 120V takes its place. If you own an RV with a TT-30 plug, it now connects directly. EV owners still have a route: Anker says the unit charges an EV through the L14-30 or TT-30 ports with the car’s charging current set below 25A.
Output and Port Rules
Loads under the 2,400W cap can run from the standard outlets; anything bigger belongs on the L14-30R, usually by way of a transfer switch or inlet box. Pair two units on Anker’s Double Power Hub and the ceiling doubles to 12,000W.
Wall charging changes which ports work. Plugged into a 120V outlet, the F3800 Plus keeps only the TT-30R and the three left-hand outlets live, with a 1,440W pass-through limit and a 20 ms switchover when the grid drops. The L14-30R and the other three outlets stay dark until you unplug it from the wall.
With no published surge rating, have an electrician compare a well pump’s or compressor’s starting draw against the 6,000W ceiling before you count on it.
Estimated runtimes on a single charge
We assume 85 to 90 percent inverter efficiency, which leaves about 3,260 to 3,460 Wh usable from a full battery. Appliance draws are typical ranges, so check the label on your own.
| Appliance | Typical Draw | Estimated Runtime |
|---|---|---|
| Refrigerator | 100 to 150W avg | 22 to 34 hours |
| Fridge, lights, router and devices | 200 to 350W | 9 to 17 hours |
| Window AC (5,000 BTU) | 500W | 6.5 to 7 hours |
| Sump pump | 800 to 1,200W | about 3 to 4 hours |
| Central AC (3-ton, 240V) | 2,500 to 3,500W | about 1 to 1.4 hours |
| EV charging (24A at 240V) | 5,760W | about 35 minutes |
One BP3800 adds another 3,840 Wh and roughly doubles every runtime in the table.
Charging Speed
A standard 120V outlet feeds it 1,800W at most. At that rate, refilling 3,840 Wh takes a little over two hours before charging losses.
Eight 400W panels in full sun refill it in 1.5 hours by Anker’s figure, since each of the two solar inputs takes up to 1,600W. A 240V gas generator connects through Anker’s Generator Adapter, sold separately and limited to a single F3800 Plus, and charges at up to 3,300W, or 6,000W once an expansion battery is attached. The Home Power Panel can also charge it at 6,000W from the grid, again with an expansion battery connected.
Expansion Batteries
Each BP3800 adds 3,840 Wh and weighs 72.8 lb on its own. One F3800 Plus takes six of them, for 26.88 kWh. That’s more per unit than the Bluetti Apex 300 reaches with six B300K packs (about 19.4 kWh). Run two fully stacked F3800 Plus units together and you’re at 53.8 kWh.
Adding batteries is plug-and-play by Anker’s description, and the BP3800 sells both on its own and bundled with the F3800 Plus. If you can’t decide how much capacity you need, size your panel load with our whole-home battery backup guide, or run the base unit through a season with an energy monitor on your panel, then buy packs to cover your heaviest day.
Connecting It to Your House
The L14-30R feeds a manual transfer switch or an inlet box (our generator transfer switch guide compares switches), and Anker sells the F3800 Plus in a bundle with a 10-circuit manual transfer switch. The third route is Anker’s own Home Power Panel, required for Storm Guard, which starts charging when severe weather is forecast.
Living With 136.7 Pounds
Wheels and a handle get it across a garage floor. It measures 27.6 by 15.3 by 15.6 inches with the wheels, and we’d give it a permanent spot next to the transfer switch or inlet.
The LFP cells are rated for 3,000+ cycles to 80 percent, and Anker covers the unit for five years. That cycle rating trails the Apex 300’s 6,000, which matters if you plan to cycle the battery every day and much less if it mostly sits charged waiting for storms.
What Could Be Better
Six outlets sharing 2,400W is a low cap for a 6,000W machine. Worse for whole-home buyers, the L14-30R goes dark whenever the unit charges from a wall outlet, which rules out always-on 240V backup.
Anker should publish a surge rating. Without one, sizing for a well pump or compressor means a call to an electrician.
The 6,000W charging figures depend on add-ons, so we’d price the Home Power Panel or Generator Adapter, plus at least one BP3800, before comparing sticker prices.
How It Compares
Of the other 120V/240V units we cover, the EcoFlow DELTA Pro 3 is the closer match, and at about 114 lb it’s roughly 23 lb lighter. Our EcoFlow DELTA Pro 3 vs. Anker SOLIX F3800 page compares the two brands’ 240V systems head to head.
The Bluetti Apex 300 also does 120V and 240V and has a TT-30R, with 3,840W of output from 2,764.8 Wh, and it costs less. The Bluetti Elite 400 matches the F3800 Plus’s 3,840 Wh for less money but has no 240V and no expansion. The Jackery HomePower 2000 Plus v2 and the EcoFlow DELTA 3 Classic are 120V-only units for essential-circuit backup on a smaller budget. All six are ranked in our best home battery backup systems guide, and our best portable power stations ranking covers use away from the house.
How We Evaluate Products
Specs come from Anker’s F3800 Plus product page and its FAQ, read on October 18, 2026. The price comes from the Amazon listing the same day. We have not tested this unit hands-on. Runtime figures are our arithmetic from Anker’s capacity rating and the efficiency range stated above the table.