Quick answer
The Anker SOLIX F3800 is built for buyers who want to back up an entire home’s essential loads, not just a few outlets: a 3,840Wh LiFePO4 battery, 6,000W continuous AC output (9,000W surge), and true 120V/240V split-phase power that can run a well pump or central AC directly from one unit. Anker backs it with a 5-year warranty and a 3,000+ cycle rating, and it recharges to full in about 1.5 hours from a wall outlet. It carries a $3,999 MSRP, and Amazon’s regular listed price runs around $2,399 — but per 9to5toys’ 2026 deal tracking, recurring sale windows have dropped it as low as $1,709, with an $1,800 sale price confirmed as recently as August 2026. Budget $2,000-2,400 if buying today, or wait for a sale window to land closer to $1,600-1,900.
We’ve referenced the F3800 as the upgrade path in our F2000 review and our home backup rankings for buyers who outgrow a 2kWh-class unit. This review pulls that context into one place: what the extra capacity and output actually buy you, and who should skip it for something smaller. For how its street price stacks up against EcoFlow and Jackery around Black Friday, see our Black Friday deals guide.
At a glance
| Spec | Anker SOLIX F3800 |
|---|---|
| Capacity | 3,840Wh LiFePO4 (expandable to ~26.9kWh with 6x BP3800; 53.8kWh with a paired 2nd unit) |
| AC output | 6,000W continuous, 9,000W surge, 120V/240V split-phase |
| Recharge (wall, to full) | ~1.5 hours |
| Solar input (max) | 2,400W (dual 1,200W MPPT inputs) |
| Cycle life | 3,000+ cycles |
| Warranty | 5 years |
| Weight | ~132 lb |
| MSRP / typical street price | $3,999 MSRP, ~$2,399 regular Amazon price, $1,600-1,900 on frequent sale |
| Rating | ★★★★½ (4.5/5) |
What we like
- It’s one of the only sub-$4,000 units with true 240V split-phase output. 6,000W continuous and 9,000W surge is enough to run a well pump, a central AC compressor, or other hardwired 240V loads directly — something the Anker SOLIX F2000 and every 1-2kWh unit on this site simply can’t do.
- The expansion ceiling is enormous. Six BP3800 batteries take a single F3800 to about 26.9kWh — well past the F2000’s 6,144Wh max — and pairing two F3800 units together scales that to 53.8kWh and 12,000W continuous, ahead of even the EcoFlow Delta Pro’s 25kWh ceiling.
- Fast to full, not just to 80%. About 1.5 hours from a wall outlet gets the whole 3,840Wh back, and the 2,400W max solar input keeps that pace on sunny days too.
- On sale, the price becomes genuinely competitive. During its recurring $1,600-1,900 sale windows, it lands inside the EcoFlow Delta Pro’s own $1,399-1,899 street range while offering nearly double the continuous output — a real value gap, though at its $2,399 regular Amazon price it’s the pricier of the two.
Where it falls short
- At ~132 lb, this is not a portable unit in any normal sense. It’s built for a garage or utility room, not a truck bed or campsite — almost double the weight of the EcoFlow Delta Pro and roughly 2x the F2000. Buyers who need to move a station between locations should look at something in the 1-2kWh class.
- The $3,999 MSRP is misleading even outside of a sale. Amazon’s regular listed price already runs around $2,399, and per 9to5toys’ 2026 deal history, recurring sale windows push it down to $1,600-1,900 for days at a time — a buyer who pays sticker price is overpaying by well over $1,500. Don’t assume “Black Friday” beats that sale range either — see our Anker SOLIX Black Friday deals guide for why this unit’s 2025 Black Friday price was actually higher than its everyday street price.
- Expansion batteries add up fast. Each BP3800 is a capacity-class purchase on its own; budget the full expanded system cost up front rather than treating the base unit’s price as the total.
Who should buy it
The F3800 makes sense for buyers with genuine whole-home backup needs — a well pump, central AC, or other hardwired 240V loads that smaller stations can’t power — and enough space to dedicate to a 132 lb unit that mostly stays put. If portability matters at all, the lighter Anker SOLIX F2000 or Jackery Explorer 2000 v2 covers most outage scenarios at a fraction of the weight and cost. For a full-time RV or a genuine whole-house buildout, our best power station for home backup picks compare the F3800 directly against the EcoFlow Delta Pro in the same output class.
Anker SOLIX F3800 (3,840Wh)
- 6,000W continuous AC output, 9,000W surge, true 120V/240V split-phase for hardwired loads.
- Recharges to full in about 1.5 hours from a wall outlet; expandable to ~26.9kWh with six BP3800 batteries (53.8kWh if paired with a second F3800).
- 3,000+ cycle LiFePO4 pack; 5-year warranty.
A system built to scale to 53.8kWh is only as good as the batteries and panels you keep on hand for it — try Amazon Prime free for 30 days and get expansion batteries and solar panels delivered free in two days when you’re ready to grow the system.
The bottom line
The Anker SOLIX F3800 is the unit to consider once a 1-2kWh power station genuinely isn’t enough — 6,000W of true 240V split-phase output and a 53.8kWh expansion ceiling put it in a different category from everything else on this site’s reviews. It’s heavy, it’s expensive at MSRP, and it’s overkill for camping or a single-outlet outage. But caught during one of its recurring $1,600-1,900 sale windows, it’s a real alternative to the EcoFlow Delta Pro for buyers who need whole-home coverage without a generator install. See our full portable power station rankings for how it compares against every class of unit on this site.