EcoFlow DELTA 3
69BatteryRank score · Balanced
$549as of
Insufficient price history← Compare
Check price on Amazon
EcoFlow DELTA 3 vs EcoFlow DELTA 3 Classic (1024Wh)
Decision readout
Better station
EcoFlow DELTA 3 leads by 19 points overall.
Better buy today
No price call today — the performance leader has no tracked street price yet.
EcoFlow DELTA 3 Classic (1024Wh)
50BatteryRank score · Balanced
$469as of
Insufficient price historyWhat changes the decision
- Home backup: EcoFlow DELTA 3 — more AC-delivered capacity
- CPAP & bedroom: EcoFlow DELTA 3 Classic (1024Wh) — quieter under load
- Camping & RV: EcoFlow DELTA 3 Classic (1024Wh) — lighter and easier to carry
01 · Score evidence
Score breakdown
69
EcoFlow DELTA 3
Overall
50
EcoFlow DELTA 3 Classic (1024Wh)
65
POWER
EcoFlow DELTA 3 +26
39
Battery-side usable capacity and how much you can run at once.
79
TRUST
Incomplete data
N/A
Owner reputation, safety record, warranty, and build durability.
66
CHARGING
EcoFlow DELTA 3 +5
61
Wall and solar recharge speed.
60
LIVABILITY
EcoFlow DELTA 3 Classic (1024Wh) +8
68
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 deliveredmeasured
870 Wh. Show source
verified source~870Wh effective at ~85% (Backup Power Hub, calculated) vs 1024 rated2026-07-04~870Wh effective at ~85% (Backup Power Hub, calculated) vs 1024 rated · 15% below the label
EcoFlow DELTA 3 Classic (1024Wh)
Rated (on the box)
1,024 Wh. Show source
claimed sourcemanuals.ecoflow.com ↗2026-07-27The marketing number — total cell capacity.
AC delivered (est.)
783 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 DELTA 3 Classic (1024Wh) | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 12.1 nights | about 10.9 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.9 nights | about 1.7 nights | 56 W · |
| Refrigerator (full-size) | about 14 hours | about 12 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 48 hours | about 44 hours | 18 W · |
| Laptop (65W charger) | about 27 hours | about 24 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 43 full charges | about 39 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 DELTA 3 Classic (1024Wh) |
|---|---|---|
| AC-delivered capacity | 870 Whverified. Show sourceverified source~870Wh effective at ~85% (Backup Power Hub, calculated) vs 1024 rated2026-07-04 | 783 Whest.. Show sourceestimated sourcemanuals.ecoflow.com ↗2026-07-27 |
| Continuous power output | 1,800 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 1,800 W. Show sourceclaimed sourcemanuals.ecoflow.com ↗ |
| Surge power output | 3,600 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 3,600 W. Show sourceclaimed sourcemanuals.ecoflow.com ↗ |
| Max solar input | 500 W. Show sourceclaimed sourceus.ecoflow.com ↗ | 500 W. Show sourceclaimed sourcemanuals.ecoflow.com ↗ |
| AC charge time (0–100%) | 56 min. Show sourceclaimed sourceus.ecoflow.com ↗ | — |
| Weight | 12.5 kg. Show sourceclaimed sourceus.ecoflow.com ↗ | 12.1 kg. Show sourceclaimed sourcemanuals.ecoflow.com ↗ |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗ | — |
Only show differences
- AC-delivered capacity870 Wh783 Wh
- AC charge time (0–100%)56 min—
- Weight12.5 kg12.1 kg
- Rated cycle life4,000 cycles—
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
EcoFlow DELTA 3
$549as of Insufficient price history
EcoFlow DELTA 3 Classic (1024Wh)
$469as of Insufficient price history
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- EcoFlow DELTA 3 #3 Midsize (1 kWh class) in Best Portable Power Stations · #3 of 10 in Best 1,000 Wh Stations
- EcoFlow DELTA 3 Classic (1024Wh) #6 of 10 in Fastest AC-Charging Power Stations · #8 of 10 in Most Inverter Output per Pound
Quick answers
- Is the EcoFlow DELTA 3 better than the EcoFlow DELTA 3 Classic (1024Wh)?
- EcoFlow DELTA 3 leads by 19 points overall. No price call today — the performance leader has no tracked street price yet.
- Which has more usable capacity, the EcoFlow DELTA 3 or EcoFlow DELTA 3 Classic (1024Wh)?
- The EcoFlow DELTA 3, by 87 Wh — 870 Wh versus 783 Wh, a 11% advantage. At a 60 W load that is roughly 1.5 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 DELTA 3 Classic (1024Wh)?
- Neither — both are rated 1,800 W continuous, so any load one can run, the other can too. Surge headroom follows the same order: 3,600 W against 3,600 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the EcoFlow DELTA 3 and EcoFlow DELTA 3 Classic (1024Wh)?
- On the same sourced load — a refrigerator (full-size) — the EcoFlow DELTA 3 runs longer: 13.8 hours against 12.4. 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 EcoFlow DELTA 3 or EcoFlow DELTA 3 Classic (1024Wh)?
- They are effectively the same to carry — 12.5 kg against 12.1 kg. Neither is meaningfully easier to move, so portability should not decide this one.
- 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; the EcoFlow DELTA 3 Classic (1024Wh) for cpap & bedroom, camping & rv. They split, so the honest answer depends on which of those you are actually buying for.
- Are the EcoFlow DELTA 3 and EcoFlow DELTA 3 Classic (1024Wh) 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 DELTA 3 Classic (1024Wh) →
- See more alternatives to EcoFlow DELTA 3 →
- See more alternatives to EcoFlow DELTA 3 Classic (1024Wh) →
- 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 →