Goal Zero Yeti 1500 6th gen (LiFePO4)
47BatteryRank score · Limited
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Goal Zero Yeti 1500 6th gen (LiFePO4) vs Oupes Mega 2 Pro
Decision readout
Better station
Oupes Mega 2 Pro leads by 22 points overall.
Oupes Mega 2 Pro
69BatteryRank score · Balanced
What changes the decision
- Home backup: Oupes Mega 2 Pro — more AC-delivered capacity and higher AC output
- Camping & RV: Oupes Mega 2 Pro — lighter and easier to carry
01 · Score evidence
Score breakdown
47
Goal Zero Yeti 1500 6th gen (LiFePO4)
Overall
69
Oupes Mega 2 Pro
27
POWER
Oupes Mega 2 Pro +45
72
Battery-side usable capacity and how much you can run at once.
82
TRUST
Oupes Mega 2 Pro +2
84
Owner reputation, safety record, warranty, and build durability.
76
CHARGING
Goal Zero Yeti 1500 6th gen (LiFePO4) +12
64
Wall and solar recharge speed.
26
LIVABILITY
Oupes Mega 2 Pro +11
37
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.
Goal Zero Yeti 1500 6th gen (LiFePO4)
Rated (on the box)
1,505 Wh. Show source
claimed sourcegoalzero.com ↗2026-07-04The marketing number — total cell capacity.
AC delivered (est.)
1,279 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 2 Pro
Rated (on the box)
2,048 Wh. Show source
claimed sourceoupes.com ↗2026-07-27The 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 | Goal Zero Yeti 1500 6th gen (LiFePO4) | Oupes Mega 2 Pro | Assumption |
|---|---|---|---|
| CPAP (humidifier off) | about 17.8 nights | about 24.2 nights | 9 W · |
| CPAP (heated humidifier on) | about 2.9 nights | about 3.9 nights | 56 W · |
| Refrigerator (full-size) | about 20 hours | about 28 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 71 hours | about 97 hours | 18 W · |
| Laptop (65W charger) | about 39 hours | about 54 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 63 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 | Goal Zero Yeti 1500 6th gen (LiFePO4) | Oupes Mega 2 Pro |
|---|---|---|
| AC-delivered capacity | 1,279 Whest.. Show sourceestimated sourcegoalzero.com ↗2026-07-04 | 1,741 Whest.. Show sourceestimated sourceoupes.com ↗2026-07-27 |
| Continuous power output | 2,000 W. Show sourceclaimed sourcegoalzero.com ↗ | 2,500 W. Show sourceclaimed sourceoupes.com ↗ |
| Surge power output | 3,600 W. Show sourceclaimed sourcegoalzero.com ↗ | 3,800 W. Show sourceclaimed sourceoupes.com ↗ |
| Max solar input | 900 W. Show sourceclaimed sourcegoalzero.com ↗ | 1,000 W. Show sourceclaimed sourceoupes.com ↗ |
| AC charge time (0–100%) | 66 min. Show sourceclaimed sourcegoalzero.com ↗ | — |
| Weight | 23.9 kg. Show sourceclaimed sourcegoalzero.com ↗ | 22.1 kg. Show sourceclaimed sourceoupes.com ↗ |
| Rated cycle life | 4,000 cycles. Show sourceclaimed sourcegoalzero.com ↗ | 4,000 cycles. Show sourceclaimed sourceoupes.com ↗ |
Only show differences
- AC-delivered capacity1,279 Wh1,741 Wh
- Continuous power output2,000 W2,500 W
- Surge power output3,600 W3,800 W
- Max solar input900 W1,000 W
- AC charge time (0–100%)66 min—
- Weight23.9 kg22.1 kg
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
Quick answers
- Is the Goal Zero Yeti 1500 6th gen (LiFePO4) better than the Oupes Mega 2 Pro?
- Oupes Mega 2 Pro leads by 22 points overall.
- Which has more usable capacity, the Goal Zero Yeti 1500 6th gen (LiFePO4) or Oupes Mega 2 Pro?
- The Oupes Mega 2 Pro, by 462 Wh — 1,279 Wh versus 1,741 Wh, a 36% advantage. At a 60 W load that is roughly 7.7 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 Goal Zero Yeti 1500 6th gen (LiFePO4) or Oupes Mega 2 Pro?
- The Oupes Mega 2 Pro: 2,000 W versus 2,500 W continuous. That gap matters only if a load sits between the two numbers — below 2,000 W both run it, above 2,500 W neither does. Surge headroom follows the same order: 3,600 W against 3,800 W, and surge is what decides whether a compressor or pump actually starts.
- How does runtime compare between the Goal Zero Yeti 1500 6th gen (LiFePO4) and Oupes Mega 2 Pro?
- On the same sourced load — a refrigerator (full-size) — the Oupes Mega 2 Pro runs longer: 27.6 hours against 20.3. 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 Goal Zero Yeti 1500 6th gen (LiFePO4) or Oupes Mega 2 Pro?
- The Oupes Mega 2 Pro, by 1.8 kg (22.1 kg versus 23.9 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 Oupes Mega 2 Pro for home backup, camping & rv. One model leads every use case we score here, which makes this an unusually clean choice.
Keep deciding
- Full scorecard, specs & price for Goal Zero Yeti 1500 6th gen (LiFePO4) →
- Full scorecard, specs & price for Oupes Mega 2 Pro →
- See more alternatives to Goal Zero Yeti 1500 6th gen (LiFePO4) →
- See more alternatives to Oupes Mega 2 Pro →
- 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 →