Anker SOLIX F3800 vs EcoFlow DELTA Pro 3
Anker SOLIX F3800
EcoFlow DELTA Pro 3The F3800 delivers 50% more continuous output, and that is the gap worth deciding on: it reaches appliances the other one cannot start. They are level on capacity and maximum solar input. Scored across this catalogue they land at 8.1 and 8.8 out of 10.
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EcoFlow DELTA Pro 3It leads by 33% on rated cycle life and 17% on weight. That is the combination most people are actually choosing between.
Check price on AmazonAnker SOLIX F3800It leads by 50% on AC output. Those are the axes to buy it for, and the only ones.
Check price on AmazonThe specifications side by side
| Specification | F3800 | DELTA Pro 3 |
|---|---|---|
| Score | 8.1/10 | 8.8/10 |
| Capacity | 3,840 Wh | 4,096 Wh |
| AC output | 6,000 W | 4,000 W |
| Surge | 9,000 W | 8,000 W |
| Cell chemistry | LiFePO4 | LFP |
| Cycle life | 3,000 cycles to 80% | 4,000 cycles to 80% |
| Wall recharge | Not published | 50 minutes |
| Max solar input | 2,400 W | 2,600 W |
| UPS switchover | 20 ms | 10 ms |
| Weight | 132.3 lb (60.0 kg) | 113.5 lb (51.5 kg) |
| Extra batteries | Expandable to 26,880 Wh | Expandable to 12,000 Wh |
The rows worth your attention are the ones where the gap is large enough to change a decision. On this pair that means AC output and rated cycle life. Everything else is close enough to ignore.
Where they really separate: AC output
This is the one gap large enough to decide the question. The F3800 comes out 50% ahead on AC output, and the reason that matters is practical rather than arithmetic.
Continuous output is the wall you hit first. It decides what will start at all, and no amount of extra capacity gets you past it.
The other differences, in order of size
- Rated cycle life. The DELTA Pro 3 leads by 33%.
- Weight. The DELTA Pro 3 leads by 17%.
None of these is decisive on its own. Taken together they describe two units built to slightly different briefs, which is worth knowing before you choose on the headline figure alone.
What each one will run
Same arithmetic for both: usable watt hours after an assumed 85% inverter efficiency, divided by average draw rather than peak.
Anker SOLIX F3800
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 77 h 43 min |
| CPAP machine | 45 W | 72 h 32 min |
| Router and modem | 15 W | 217 h 36 min |
| Television | 90 W | 36 h 16 min |
| Microwave | 1200 W | 2 h 43 min |
EcoFlow DELTA Pro 3
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 82 h 54 min |
| CPAP machine | 45 W | 77 h 22 min |
| Router and modem | 15 W | 232 h 6 min |
| Television | 90 W | 38 h 41 min |
| Microwave | 1200 W | 2 h 54 min |
For your own appliance and its real wattage, the run time calculator shows the assumptions on screen and lets you move them.
Common questions
Is the F3800 or the DELTA Pro 3 better value?
This site does not print prices, because a stale price is worse than none. Check both on Amazon, then weigh the gap against the differences above. A 50% lead on AC output is worth paying for only if that axis matters to your use.
Can I compare their surge ratings directly?
Not always. BLUETTI's Lifting Power and EcoFlow's X-Boost run appliances above rated output by lowering voltage, which suits a kettle or a heater but not a motor or a computer. A conventional surge rating means something else: a brief tolerance for start-up current. The table keeps each maker's own label attached.