EcoFlow DELTA Pro 3
75BatteryRank score · Excellent
$2,399as of
Fair price← CompareCheck price on Amazon 
Check price on Amazon
EcoFlow DELTA Pro 3 vs Fossibot F2400
Decision readout
Better station
EcoFlow DELTA Pro 3 leads by 27 points overall.
Better buy today
No purchase urgency: the performance leader is not at a Good or Great price today.
Fossibot F2400
48BatteryRank score · Limited
$559as of
Good priceWhat changes the decision
- Home backup: EcoFlow DELTA Pro 3 — more AC-delivered capacity and higher AC output
- Camping & RV: Fossibot F2400 — lighter and easier to carry
01 · Score evidence
Score breakdown
75
EcoFlow DELTA Pro 3
Overall
48
Fossibot F2400
83
POWER
EcoFlow DELTA Pro 3 +32
51
Battery-side usable capacity and how much you can run at once.
73
TRUST
EcoFlow DELTA Pro 3 +9
64
Owner reputation, safety record, warranty, and build durability.
N/A
CHARGING
Incomplete data
22
Wall and solar recharge speed.
42
LIVABILITY
Fossibot F2400 +19
61
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.
EcoFlow DELTA Pro 3
Rated (on the box)
4,096 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
AC deliveredmeasured
3,790 Wh. Show source
verified source3790Wh usable at >93% efficiency (OutdoorGearLab) vs 4096 rated2026-07-043790Wh usable at >93% efficiency (OutdoorGearLab) vs 4096 rated · 7% below the label
Fossibot F2400
Rated (on the box)
2,048 Wh. Show source
claimed sourcefossibot.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
1,741 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 | EcoFlow DELTA Pro 3 | Fossibot F2400 | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 52.6 nights | about 24.2 nights | 9 W · |
| CPAP (heated humidifier on) | about 8.5 nights | about 3.9 nights | 56 W · |
| Refrigerator (full-size) | about 60 hours | about 28 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 211 hours | about 97 hours | 18 W · |
| Laptop (65W charger) | about 117 hours | about 54 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 189 full charges | about 87 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 | EcoFlow DELTA Pro 3 | Fossibot F2400 |
|---|---|---|
| AC-delivered capacity | 3,790 Whverified. Show sourceverified source3790Wh usable at >93% efficiency (OutdoorGearLab) vs 4096 rated2026-07-04 | 1,741 Whest.. Show sourceestimated sourcefossibot.com ↗2026-07-04 |
| Continuous power output | 4,000 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 2,400 W. Show sourceclaimed sourcefossibot.com ↗ |
| Surge power output | 8,000 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 4,800 W. Show sourceclaimed sourcefossibot.com ↗ |
| Max solar input | 2,600 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 500 W. Show sourceclaimed sourcefossibot.com ↗ |
| AC charge time (0–100%) | — | 120 min. Show sourceclaimed sourcefossibot.com ↗ |
| Weight | 51.5 kg. Show sourceclaimed sourceus.ecoflow.com ↗ | 22 kg. Show sourceclaimed sourcefossibot.com ↗ |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗ | 3,500 cycles. Show sourceclaimed sourcefossibot.com ↗ |
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.
05 · Tracked street price
Price & fair-price verdict
Fossibot F2400
$559as of Good price
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
Quick answers
- Is the EcoFlow DELTA Pro 3 better than the Fossibot F2400?
- EcoFlow DELTA Pro 3 leads by 27 points overall. No purchase urgency: the performance leader is not at a Good or Great price today.
- How are these two power stations compared?
- Both are scored by the BatteryRank formula across four pillars — power, trust, charging, and livability — over sourced specs, owner reputation, and durability. Capacity scoring uses battery-side usable watt-hours; this page separately shows estimated or measured AC-delivered capacity. Price is shown against each model's own history, and the score is price-independent.
- Which has more usable capacity, the EcoFlow DELTA Pro 3 or Fossibot F2400?
- Use the capacity-truth section for the model-specific comparison. It separates rated battery energy from estimated or independently measured AC-delivered energy, so nameplate watt-hours are not mistaken for outlet runtime.
- Which has more AC output, the EcoFlow DELTA Pro 3 or Fossibot F2400?
- The key-differences table compares continuous inverter output and surge output when both sourced readings exist. A missing input stays N/A and never creates a winner.
- Which is lighter, the EcoFlow DELTA Pro 3 or Fossibot F2400?
- The key-differences table marks the lighter station only when both manufacturer-sourced weight readings are present. Open each model dossier for dimensions and the full portability context.
- Which is the better price today, the EcoFlow DELTA Pro 3 or Fossibot F2400?
- The decision dashboard evaluates each timestamped street price against that model's own tracked history. Price is separate from the quality score, and no deal claim appears without sufficient history.
- How does runtime compare between the EcoFlow DELTA Pro 3 and Fossibot F2400?
- The runtime table uses the same sourced device loads and each model's AC-delivered capacity. Results are planning estimates, not hands-on tests, and appear only when both models have enough data.
- Which model should I buy for my use case?
- Use the persona-fit section as a starting point, then confirm required output, runtime, charging, portability, and today's price. BatteryRank declares a use-case winner only when both sides have the needed inputs.
Keep deciding
- Full scorecard, specs & price for EcoFlow DELTA Pro 3 →
- Full scorecard, specs & price for Fossibot F2400 →
- See more alternatives to EcoFlow DELTA Pro 3 →
- See more alternatives to Fossibot F2400 →
- 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 →