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Aferiy P280 vs Oupes Mega 2 Pro

Aferiy P280 — front view

Aferiy P280

74BatteryRank score · Excellent
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Decision readout
Better station

Aferiy P280 is the better station: the overall scores are close, but it wins capacity and output, weight and noise — every dimension that separates them.

  • powerAferiy P280+10
    2,800 W vs 2,500 W continuous
  • livabilityAferiy P280+14
    21.6 kg vs 22.1 kg
Oupes Mega 2 Pro — front view

Oupes Mega 2 Pro

69BatteryRank score · Balanced
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What changes the decision

By the BatteryRank Engineering Team

01 · Score evidence

Score breakdown

74
Aferiy P280
Overall
69
Oupes Mega 2 Pro
82
POWER
Aferiy P280 +10
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.

69
CHARGING
Aferiy P280 +5
64

Wall and solar recharge speed.

51
LIVABILITY
Aferiy P280 +14
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.

Aferiy P280
Rated (on the box)
2,048 Wh. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh

The marketing number — total cell capacity.

AC delivered (est.)
1,741 Wh. Show sourceestimated sourceestimate = battery-side usable capacity × 85% inverter efficiency

What 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 sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh

The marketing number — total cell capacity.

AC delivered (est.)
1,741 Wh. Show sourceestimated sourceestimate = battery-side usable capacity × 85% inverter efficiency

What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.

03 · Same assumptions

Same-device runtime

Estimated runtime for the same sourced devices on Aferiy P280 and Oupes Mega 2 Pro
DeviceAferiy P280Oupes Mega 2 ProAssumption
CPAP (humidifier off)about 24.2 nightsabout 24.2 nights9 W ·
CPAP (heated humidifier on)about 3.9 nightsabout 3.9 nights56 W ·
Refrigerator (full-size)about 28 hoursabout 28 hours180 W × 35% duty cycle ·
Wi-Fi router + modemabout 97 hoursabout 97 hours18 W ·
Laptop (65W charger)about 54 hoursabout 54 hours65 W × 50% duty cycle ·
Phone (one full charge)about 87 full chargesabout 87 full charges20 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

Key sourced specifications for Aferiy P280 and Oupes Mega 2 Pro
SpecAferiy P280Oupes Mega 2 Pro
AC-delivered capacity
1,741 Whest.. Show sourceestimated sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
1,741 Whest.. Show sourceestimated sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Continuous power output
2,800 W. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
2,500 W. Show sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Surge power output
5,600 W. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
3,800 W. Show sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Max solar input
1,200 W. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
1,000 W. Show sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Weight
21.6 kg. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
22.1 kg. Show sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Rated cycle life
4,000 cycles. Show sourceclaimed sourceaferiy.com2026-07-27https://www.aferiy.com/products/aferiy-p280-portable-power-station-2800w-2048wh
4,000 cycles. Show sourceclaimed sourceoupes.com2026-07-27https://oupes.com/products/oupes-mega-2-pro-home-backup-portable-power-station-2500w-2048wh
Only show differences
  • Continuous power output2,800 W2,500 W
  • Surge power output5,600 W3,800 W
  • Max solar input1,200 W1,000 W
  • Weight21.6 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 Aferiy P280 better than the Oupes Mega 2 Pro?
Aferiy P280 is the better station: the overall scores are close, but it wins capacity and output, weight and noise — every dimension that separates them.
Which has more usable capacity, the Aferiy P280 or Oupes Mega 2 Pro?
Neither, in any way you would notice: 1,741 Wh against 1,741 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 Aferiy P280 or Oupes Mega 2 Pro?
The Aferiy P280: 2,800 W versus 2,500 W continuous. That gap matters only if a load sits between the two numbers — below 2,500 W both run it, above 2,800 W neither does. Surge headroom follows the same order: 5,600 W against 3,800 W, and surge is what decides whether a compressor or pump actually starts.
How does runtime compare between the Aferiy P280 and Oupes Mega 2 Pro?
They run within 0% of each other on the same load — about 27.6 hours each on a refrigerator (full-size). Runtime will not separate these two; the deciding factor is somewhere else.
Which is lighter, the Aferiy P280 or Oupes Mega 2 Pro?
They are effectively the same to carry — 21.6 kg against 22.1 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 Aferiy P280 for home backup, camping & rv. One model leads every use case we score here, which makes this an unusually clean choice.

Keep deciding

Scores computed from sourced data · prices timestamped · tap or focus a figure to view its source

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