EcoFlow DELTA 3
68BatteryRank score · Balanced
← Compare
Check price on Amazon
EcoFlow DELTA 3 vs Oupes Mega 1 Lite
Decision readout
Better station
EcoFlow DELTA 3 takes warranty and track record, Oupes Mega 1 Lite 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 6 points — a hair, not a mandate.
- powerEcoFlow DELTA 3+11
- trustEcoFlow DELTA 3+184,000 cycles vs 3,500 cycles
- chargingOupes Mega 1 Lite+12800 W vs 500 W solar input
Oupes Mega 1 Lite
62BatteryRank score · Balanced
What changes the decision
- Home backup: EcoFlow DELTA 3 — stronger combined capacity and AC-output score
- Camping & RV: Oupes Mega 1 Lite — lighter and easier to carry
By the BatteryRank Engineering Team
01 · Score evidence
Score breakdown
68
EcoFlow DELTA 3
Overall
62
Oupes Mega 1 Lite
65
POWER
EcoFlow DELTA 3 +11
54
Battery-side usable capacity and how much you can run at once.
86
TRUST
EcoFlow DELTA 3 +18
68
Owner reputation, safety record, warranty, and build durability.
66
CHARGING
Oupes Mega 1 Lite +12
78
Wall and solar recharge speed.
60
LIVABILITY
EcoFlow DELTA 3 +3
57
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.
Oupes Mega 1 Lite
Rated (on the box)
1,024 Wh. Show source
claimed sourceoupes.com ↗2026-07-27The 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.
03 · Same assumptions
Same-device runtime
| Device | EcoFlow DELTA 3 | Oupes Mega 1 Lite | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 12.1 nights | about 12.1 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.9 nights | about 1.9 nights | 56 W · |
| Refrigerator (full-size) | about 14 hours | about 14 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 48 hours | about 48 hours | 18 W · |
| Laptop (65W charger) | about 27 hours | about 27 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 43 full charges | about 43 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 | Oupes Mega 1 Lite |
|---|---|---|
| AC-delivered capacity | 870 Whest.. Show sourceestimated sourceus.ecoflow.com ↗2026-07-04 | 870 Whest.. Show sourceestimated sourceoupes.com ↗2026-07-27 |
| Continuous power output | 1,800 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 2,000 W. Show sourceclaimed sourceoupes.com ↗2026-07-27 |
| Surge power output | 3,600 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 4,500 W. Show sourceclaimed sourceoupes.com ↗2026-07-27 |
| Max solar input | 500 W. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 800 W. Show sourceclaimed sourceoupes.com ↗2026-07-27 |
| AC charge time (0–100%) | 56 min. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | — |
| Weight | 12.5 kg. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 12 kg. Show sourceclaimed sourceoupes.com ↗2026-07-27 |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourceus.ecoflow.com ↗2026-07-04 | 3,500 cycles. Show sourceclaimed sourceoupes.com ↗2026-07-27 |
Only show differences
- Continuous power output1,800 W2,000 W
- Surge power output3,600 W4,500 W
- Max solar input500 W800 W
- AC charge time (0–100%)56 min—
- Weight12.5 kg12 kg
- Rated cycle life4,000 cycles3,500 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.
Where these rank
Where to buy
Affiliate links: we may earn a commission if you buy, at no extra cost to you. Commission never affects our rankings.
EcoFlow DELTA 3
Oupes Mega 1 Lite
Quick answers
- Is the EcoFlow DELTA 3 better than the Oupes Mega 1 Lite?
- EcoFlow DELTA 3 takes warranty and track record, Oupes Mega 1 Lite 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 6 points — a hair, not a mandate.
- Which has more usable capacity, the EcoFlow DELTA 3 or Oupes Mega 1 Lite?
- Neither, in any way you would notice: 870 Wh against 870 Wh is a 0% gap, which is smaller than the swing you get from running the same load on a cold morning. Treat them as the same size and decide on output, weight, or today's price instead. Both figures are estimated AC-delivered energy, not the nameplate battery rating — the watt-hours that actually reach your devices.
- Which has more AC output, the EcoFlow DELTA 3 or Oupes Mega 1 Lite?
- The Oupes Mega 1 Lite: 1,800 W versus 2,000 W continuous. That gap matters only if a load sits between the two numbers — below 1,800 W both run it, above 2,000 W neither does. Surge headroom follows the same order: 3,600 W against 4,500 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the EcoFlow DELTA 3 and Oupes Mega 1 Lite?
- They run within 0% of each other on the same load — about 13.8 hours each on a refrigerator (full-size). Runtime will not separate these two; the deciding factor is somewhere else.
- Which is lighter, the EcoFlow DELTA 3 or Oupes Mega 1 Lite?
- They are effectively the same to carry — 12.5 kg against 12 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 Oupes Mega 1 Lite 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 EcoFlow DELTA 3 →
- Full scorecard, specs & price for Oupes Mega 1 Lite →
- See more alternatives to EcoFlow DELTA 3 →
- See more alternatives to Oupes Mega 1 Lite →
- 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 →