Anker SOLIX F3800 Plus
65BatteryRank score · Balanced
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Anker SOLIX F3800 Plus vs EcoFlow DELTA 3 Ultra
Decision readout
Better station
Anker SOLIX F3800 Plus takes capacity and output, EcoFlow DELTA 3 Ultra takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to Anker SOLIX F3800 Plus by 4 points — a hair, not a mandate.
- powerAnker SOLIX F3800 Plus+193,264 Wh vs 2,611 Wh delivered · 6,000 W vs 3,600 W continuous
- livabilityEcoFlow DELTA 3 Ultra+3032.7 kg vs 62.0 kg
EcoFlow DELTA 3 Ultra
61BatteryRank score · Balanced
What changes the decision
- Home backup: Anker SOLIX F3800 Plus — more AC-delivered capacity and higher AC output
- Camping & RV: EcoFlow DELTA 3 Ultra — lighter and easier to carry
By the BatteryRank Engineering Team
01 · Score evidence
Score breakdown
65
Anker SOLIX F3800 Plus
Overall
61
EcoFlow DELTA 3 Ultra
81
POWER
Anker SOLIX F3800 Plus +19
62
Battery-side usable capacity and how much you can run at once.
62
TRUST
EcoFlow DELTA 3 Ultra +1
63
Owner reputation, safety record, warranty, and build durability.
54
CHARGING
EcoFlow DELTA 3 Ultra +5
59
Wall and solar recharge speed.
25
LIVABILITY
EcoFlow DELTA 3 Ultra +30
55
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. Show source
claimed sourceankersolix.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
3,264 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
EcoFlow DELTA 3 Ultra
Rated (on the box)
3,072 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
2,611 Wh. Show source
estimated sourceestimate = battery-side usable capacity × 85% inverter efficiencyWhat reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
03 · Same assumptions
Same-device runtime
| Device | Anker SOLIX F3800 Plus | EcoFlow DELTA 3 Ultra | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 45.3 nights | about 36.3 nights | 9 W · |
| CPAP (heated humidifier on) | about 7.3 nights | about 5.8 nights | 56 W · |
| Refrigerator (full-size) | about 52 hours | about 41 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 181 hours | about 145 hours | 18 W · |
| Laptop (65W charger) | about 100 hours | about 80 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 163 full charges | about 130 full charges | 20 W · |
One device at a time; estimates use each station's usable AC energy. Build your own load →
04 · Sourced hardware
Key specs, side by side
| Spec | Anker SOLIX F3800 Plus | EcoFlow DELTA 3 Ultra |
|---|---|---|
| AC-delivered capacity | 3,264 Whest.. Show sourceestimated sourceankersolix.com ↗2026-07-04 | 2,611 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-04 |
| Continuous power output | 6,000 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 3,600 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Surge power output | 9,000 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 7,200 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Max solar input | 3,200 W. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 800 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| AC charge time (0–100%) | — | 89 min. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Weight | 62 kg. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 32.7 kg. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
| Rated cycle life | 3,000 cycles. Show sourceclaimed sourceankersolix.com ↗2026-07-04 | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 |
Manufacturer figures unless marked verified or est. Tap or focus a figure to view its source. The better reading in each row is highlighted — lower wins for weight and recharge time.
Where these rank
- Anker SOLIX F3800 Plus #4 of 10 in Best Power Stations for Starlink · #6 of 8 in Best for Home Backup
- EcoFlow DELTA 3 Ultra #3 of 8 in Best 3,000 Wh Stations · #8 of 10 in Best Power Stations for Starlink
Where to buy
Affiliate links: we may earn a commission if you buy, at no extra cost to you. Commission never affects our rankings.
Anker SOLIX F3800 Plus
EcoFlow DELTA 3 Ultra
Quick answers
- Is the Anker SOLIX F3800 Plus better than the EcoFlow DELTA 3 Ultra?
- Anker SOLIX F3800 Plus takes capacity and output, EcoFlow DELTA 3 Ultra takes weight and noise — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to Anker SOLIX F3800 Plus by 4 points — a hair, not a mandate.
- Which has more usable capacity, the Anker SOLIX F3800 Plus or EcoFlow DELTA 3 Ultra?
- The Anker SOLIX F3800 Plus, by 653 Wh — 3,264 Wh versus 2,611 Wh, a 25% advantage. At a 60 W load that is roughly 10.9 extra hours before the battery is empty. Both figures are estimated AC-delivered energy, not the nameplate battery rating — the watt-hours that actually reach your devices, which is always less than the number on the box.
- Which has more AC output, the Anker SOLIX F3800 Plus or EcoFlow DELTA 3 Ultra?
- The Anker SOLIX F3800 Plus: 6,000 W versus 3,600 W continuous. That gap matters only if a load sits between the two numbers — below 3,600 W both run it, above 6,000 W neither does. Surge headroom follows the same order: 9,000 W against 7,200 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the Anker SOLIX F3800 Plus and EcoFlow DELTA 3 Ultra?
- On the same sourced load — a refrigerator (full-size) — the Anker SOLIX F3800 Plus runs longer: 51.8 hours against 41.4. These are planning estimates from each model's AC-delivered capacity, not stopwatch tests; real duty cycle and temperature move them.
- Which is lighter, the Anker SOLIX F3800 Plus or EcoFlow DELTA 3 Ultra?
- The EcoFlow DELTA 3 Ultra, by 29.3 kg (32.7 kg versus 62 kg). Both weights are manufacturer figures for the bare unit; cables and a solar panel add to whatever you actually carry.
- Which model should I buy for my use case?
- On the sub-scores that describe each use case: the Anker SOLIX F3800 Plus for home backup; the EcoFlow DELTA 3 Ultra for camping & rv. They split, so the honest answer depends on which of those you are actually buying for.
Keep deciding
- Full scorecard, specs & price for Anker SOLIX F3800 Plus →
- Full scorecard, specs & price for EcoFlow DELTA 3 Ultra →
- See more alternatives to Anker SOLIX F3800 Plus →
- See more alternatives to EcoFlow DELTA 3 Ultra →
- What size do you need? →
- Browse all rankings →
- Check device runtime evidence →
- Compare outage and trip load plans →
- Browse complete power kits →
- Capacity vs output explained →
- Battery cycle-life thresholds →
- UPS behavior explained →