EcoFlow DELTA Pro 3 vs Anker SOLIX F3800
EcoFlow DELTA Pro 3 (4,096 Wh, 4,000 W) vs Anker SOLIX F3800 (3,840 Wh, 6,000 W). Their batteries are about the same size, so the differences are in output, charging and features. Here is where each one comes out ahead, based on the manufacturers' published specs.
Each row has its own scale, and the longer bar fills the row. Figures are the manufacturers' published specs.
Choose the DELTA Pro 3 for…
- UPS use: 10 ms switchover vs 20 ms
- portability: 18.8 lb lighter (113.5 lb)
Choose the F3800 for…
- high-power appliances: 6,000 W vs 4,000 W continuous output
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Our verdict
These are whole-home backup units, both with 120 V and 240 V output for things like well pumps and dryers. The EcoFlow has slightly more battery, 4,096 Wh against 3,840 Wh, which our calculator turns into about 60 hours on a typical fridge against 56. That's close enough that it shouldn't decide things.
The Anker is the bigger generator. It's rated for 6,000 W continuous against 4,000 W and 9,000 W surge against 8,000 W, and it has eight AC outlets, including the L14-30 and 14-50 plugs you'd use for a transfer switch or an EV. It also expands much further, up to 26,880 Wh with six battery packs, against 12,288 Wh for the DELTA Pro 3.
The DELTA Pro 3 is lighter at 113.5 lb against 132.3 lb, switches over faster (10 ms against 20 ms) and takes slightly more solar, 2,600 W against 2,400 W. EcoFlow rates it for 4,000 cycles against Anker's 3,000, but Anker doesn't say what end-of-life capacity it measures to, so we don't rank that.
If you need to run several big 240 V loads at once or you want room to grow, the F3800 is the stronger setup. If you want a smaller, faster-switching backup for essentials, the DELTA Pro 3 is enough.
How we compared: the makers' published specs plus our runtime calculations. We haven't bench-tested these units ourselves.
See them in action
Official videos from each maker, so expect a sales pitch. They load from YouTube only when you press play.
Play the EcoFlow DELTA Pro 3 video: EcoFlow DELTA Pro 3 | Unboxing and First Impression
Specs side by side
✓ marks the better figure where higher or lower is clearly better. Cycle-life claims use different end-of-life definitions (70% or 80% capacity), so we don't rank them.
| Spec | EcoFlow DELTA Pro 3 | Anker SOLIX F3800 |
|---|---|---|
| Capacity | 4,096 Wh | 3,840 Wh |
| Continuous output | 4,000 W | 6,000 W |
| Surge output | 8,000 W | 9,000 W |
| Max solar input | 2,600 W | 2,400 W |
| Max AC charging power | — | 1,800 W |
| Weight | 113.5 lb | 132.3 lb |
| Wh per pound | 36.1 | 29 |
| Expandable | Up to 12,288 Wh | Up to 26,880 Wh |
| 240 V output | Yes | Yes |
| UPS / EPS switchover | 10 ms | 20 ms |
| AC outlets | 7 | 8 |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Cycle life (maker claim) | 4,000 to 80% | 3,000 to 80% |
| Warranty | 5 years | 5 years |
| Buy | Check price on Amazon | Check price on Amazon |
How long each one runs everyday devices
Nonstop runtime for one device at a time, at typical average wattage with 85% inverter efficiency. ✓ marks the longest.
| Spec | EcoFlow DELTA Pro 3 | Anker SOLIX F3800 |
|---|---|---|
| Phone charging · 10 W avg | 15.4 days | 14.4 days |
| Wi-Fi router + modem · 15 W avg | 9.7 days | 9.1 days |
| CPAP · 30 W avg | 4.8 days | 4.5 days |
| Laptop · 50 W avg | 2.9 days | 2.7 days |
| TV · 100 W avg | 35 hours | 33 hours |
| Starlink Standard · 90 W avg | 39 hours | 36 hours |
| Refrigerator · 58 W avg | 2.5 days | 2.3 days |
| Chest freezer · 29 W avg | 5 days | 4.7 days |
| Window AC · 225 W avg | 15 hours | 15 hours |
| Sump pump · 210 W avg | 17 hours | 16 hours |
| Microwave · 1,500 W avg | 2.3 hours | 2.2 hours |
| Space heater · 750 W avg | 4.6 hours | 4.4 hours |
Specs from EcoFlow, Jackery, BLUETTI, Anker, DJI and Goal Zero documents, as of September 2026. See each model's page for sources: EcoFlow DELTA Pro 3 · Anker SOLIX F3800.
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