Anker SOLIX F3800 Plus
64BatteryRank score
$2,299.99as of 2026-07-11
Great price← CompareCheck price on Amazon 
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Anker SOLIX F3800 Plus vs EcoFlow DELTA Pro Ultra X
Decision readout
Better station
EcoFlow DELTA Pro Ultra X leads by 16 points overall.
Better buy today
No purchase urgency: the performance leader is not at a Good or Great price today.
EcoFlow DELTA Pro Ultra X
80BatteryRank score
$7,999as of 2026-07-04
Fair priceWhat changes the decision
- Home backup: EcoFlow DELTA Pro Ultra X — more usable capacity and AC output
- Camping & RV: EcoFlow DELTA Pro Ultra X — lighter and easier to carry
01 · Score evidence
Score breakdown
64
Anker SOLIX F3800 Plus
Overall
80
EcoFlow DELTA Pro Ultra X
76
POWER
EcoFlow DELTA Pro Ultra X +2
78
Usable capacity and how much you can run at once.
62
TRUST
EcoFlow DELTA Pro Ultra X +35
97
Owner reputation, safety record, warranty, and build durability.
57
CHARGING
EcoFlow DELTA Pro Ultra X +29
86
Wall and solar recharge speed.
27
LIVABILITY
EcoFlow DELTA Pro Ultra X +21
48
Lightweight, portable, and quiet enough to live with.
Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.
02 · Usable energy
Capacity truth
The watt-hours on the box aren't what reaches your devices. Same scale, both units.
Anker SOLIX F3800 Plus
Rated (on the box)3,840 Wh
The marketing number — total cell capacity.
Usable (at the outlet, est.)3,264 Wh
What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
EcoFlow DELTA Pro Ultra X
Rated (on the box)12,288 Wh
The marketing number — total cell capacity.
Usable (at the outlet, est.)10,445 Wh
What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Sourced hardware
Key specs, side by side
| Spec | Anker SOLIX F3800 Plus | EcoFlow DELTA Pro Ultra X |
|---|---|---|
| Usable capacity | 3,840 Wh | 12,288 Wh |
| Continuous power output | 6,000 W | 12,000 W |
| Surge power output | 9,000 W | — |
| Max solar input | 3,200 W | 10,000 W |
| Weight | 62 kg | 135.5 kg |
| Rated cycle life | 3,000 cycles | — |
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Hover any figure for its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
04 · Tracked street price
Price & fair-price verdict
Anker SOLIX F3800 Plus
$2,299.99as of 2026-07-11Great price
EcoFlow DELTA Pro Ultra X
$7,999as of 2026-07-04Fair price
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- Anker SOLIX F3800 Plus #8 of 10 in Best for RV & Van Life
- EcoFlow DELTA Pro Ultra X #1 XL / home backup in Best Portable Power Stations · #1 of 8 in Best for Home Backup