EcoFlow DELTA 3
68BatteryRank score · Balanced
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EcoFlow DELTA 3 vs EcoFlow RIVER 2 Pro (700)
Decision readout
Better station
EcoFlow DELTA 3 takes warranty and track record, EcoFlow RIVER 2 Pro (700) takes recharge speed — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to EcoFlow DELTA 3 by 8 points — a hair, not a mandate.
- powerEcoFlow DELTA 3+10870 Wh vs 609 Wh delivered · 1,800 W vs 800 W continuous
- trustEcoFlow DELTA 3+224,000 cycles vs 3,000 cycles
- chargingEcoFlow RIVER 2 Pro (700)+8
- livabilityEcoFlow DELTA 3+10
EcoFlow RIVER 2 Pro (700)
60BatteryRank score · Balanced
What changes the decision
- Home backup: EcoFlow DELTA 3 — more AC-delivered capacity and higher AC output
- Camping & RV: EcoFlow DELTA 3 — lighter and easier to carry
01 · Score evidence
Score breakdown
68
EcoFlow DELTA 3
Overall
60
EcoFlow RIVER 2 Pro (700)
65
POWER
EcoFlow DELTA 3 +10
55
Battery-side usable capacity and how much you can run at once.
86
TRUST
EcoFlow DELTA 3 +22
64
Owner reputation, safety record, warranty, and build durability.
66
CHARGING
EcoFlow RIVER 2 Pro (700) +8
74
Wall and solar recharge speed.
60
LIVABILITY
EcoFlow DELTA 3 +10
50
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 3
Rated (on the box)
1,024 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
870 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 RIVER 2 Pro (700)
Rated (on the box)
716 Wh. Show source
claimed sourceus.ecoflow.com ↗2026-07-27The marketing number — total cell capacity.
AC delivered (est.)
609 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 3 | EcoFlow RIVER 2 Pro (700) | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 12.1 nights | about 8.5 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.9 nights | about 1.4 nights | 56 W · |
| Refrigerator (full-size) | about 14 hours | about 9.7 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 48 hours | about 34 hours | 18 W · |
| Laptop (65W charger) | about 27 hours | about 19 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 43 full charges | about 30 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 3 | EcoFlow RIVER 2 Pro (700) |
|---|---|---|
| AC-delivered capacity | 870 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-04 | 609 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-27 |
| Continuous power output | 1,800 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 800 W. Show sourceclaimed sourceus.ecoflow.com ↗ |
| Surge power output | 3,600 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 1,600 W. Show sourceclaimed sourceus.ecoflow.com ↗ |
| Max solar input | 500 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 220 W. Show sourceclaimed sourceus.ecoflow.com ↗ |
| AC charge time (0–100%) | 56 min. Show sourceclaimed sourceus.ecoflow.com ↗ | — |
| Weight | 12.5 kg. Show sourceclaimed sourceus.ecoflow.com ↗ | 7.8 kg. Show sourceclaimed sourceus.ecoflow.com ↗ |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗ | 3,000 cycles. Show sourceclaimed sourceus.ecoflow.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.
Where these rank
- EcoFlow DELTA 3 #4 of 10 in Best 1,000 Wh Stations · #5 of 10 in Best Home-Office Backup Power Stations
- EcoFlow RIVER 2 Pro (700) #6 of 10 in Best for Camping · #8 of 10 in Fastest AC-Charging Power Stations
Quick answers
- Is the EcoFlow DELTA 3 better than the EcoFlow RIVER 2 Pro (700)?
- EcoFlow DELTA 3 takes warranty and track record, EcoFlow RIVER 2 Pro (700) takes recharge speed — the decision is which of those you need, not overall quality. If neither is your constraint, the composite tiebreak goes to EcoFlow DELTA 3 by 8 points — a hair, not a mandate.
- Which has more usable capacity, the EcoFlow DELTA 3 or EcoFlow RIVER 2 Pro (700)?
- The EcoFlow DELTA 3, by 261 Wh — 870 Wh versus 609 Wh, a 43% advantage. At a 60 W load that is roughly 4.4 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 EcoFlow DELTA 3 or EcoFlow RIVER 2 Pro (700)?
- The EcoFlow DELTA 3: 1,800 W versus 800 W continuous. That gap matters only if a load sits between the two numbers — below 800 W both run it, above 1,800 W neither does. Surge headroom follows the same order: 3,600 W against 1,600 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the EcoFlow DELTA 3 and EcoFlow RIVER 2 Pro (700)?
- On the same sourced load — a refrigerator (full-size) — the EcoFlow DELTA 3 runs longer: 13.8 hours against 9.7. 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 EcoFlow DELTA 3 or EcoFlow RIVER 2 Pro (700)?
- The EcoFlow RIVER 2 Pro (700), by 4.7 kg (7.8 kg versus 12.5 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 EcoFlow DELTA 3 for home backup, camping & rv. One model leads every use case we score here, which makes this an unusually clean choice.
- Are the EcoFlow DELTA 3 and EcoFlow RIVER 2 Pro (700) from the same lineup?
- Yes — same manufacturer, so warranty terms, app, accessory ecosystem, and expansion batteries are usually shared. That narrows the decision to the hardware differences above rather than to which company you want to buy into.
Keep deciding
- Full scorecard, specs & price for EcoFlow DELTA 3 →
- Full scorecard, specs & price for EcoFlow RIVER 2 Pro (700) →
- See more alternatives to EcoFlow DELTA 3 →
- See more alternatives to EcoFlow RIVER 2 Pro (700) →
- 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 →