Oupes Mega 1
- AC delivered · est.
870 Wh. Show source
estimated sourceoupes.com ↗2026-07-04- output
2,000 W. Show source
claimed sourceoupes.com ↗- surge
4,500 W. Show source
claimed sourceoupes.com ↗- weight
12.6 kg. Show source
claimed sourceoupes.com ↗
Balanced
#6 of 19
in the Midsize (1 kWh class) class
Lifted by Output & versatility and Durability & longevity; held back by portability.
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Oupes Mega 1 is a midsize (1 kwh class) model best suited to camper. It supplies 2,000 W of continuous AC output. BatteryRank scores it 66 out of 100 within its size class.
Our verdict on the Oupes Mega 1
The surge ceiling is the story: 4,500 W against a 2,000 W continuous rating, a ratio of about 2.25 that is among the widest in our catalog and unusually generous for a 1,024 Wh unit. That means it starts things well above its weight class even though it cannot run them long. Add 12.6 kg and an IP21 rating and the picture is a unit built for awkward starting loads in rough conditions rather than for endurance.
- You need to start something disproportionate to the battery sizeA 4,500 W surge ceiling on a 1,024 Wh pack is a ratio most 2 kWh units do not match, so it kicks over compressors that larger-capacity rivals refuse.
- It will live somewhere dusty or occasionally dampThe IP21 rating is a documented ingress claim against dripping water, which most units in this class do not publish at all.
- You want expansion in a unit you can still lift easilyAt 12.6 kg it accepts add-on batteries, so the 1,024 Wh starting point can grow without moving to a 25 kg chassis.
- You want to run, not just start, a demanding applianceThe 2,000 W continuous rating drains 1,024 Wh in about half an hour at full draw, so the impressive surge figure buys a start it cannot sustain. The AC200L holds 2,048 Wh, twice the storage behind a comparable inverter.
- You are looking for something genuinely packable12.6 kg is manageable but it is still a deliberate carry, and for hiking or cycling the relevant comparison is with units under 5 kg. The Elite 30 V2 is 4.3 kg against 12.6 kg here.
The honest limit: The 4,500 W surge is real and it is the reason to consider this unit, but a surge rating describes a fraction of a second. What happens next is governed by the 2,000 W continuous limit and the 1,024 Wh pack, and a load that needs 4,500 W to start typically wants well over 1,000 W to keep running — which this empties the battery doing.
What our data can’t tell you: No wall-recharge time and no 12 V socket count are sourced for this model, so both its recovery pacing and its DC output options are unknown. We also lack noise data and dimensions. The IP21 rating we do hold is a modest one — it addresses dripping water, not spray or immersion — and should not be read as weatherproofing.
BatteryRank Engineering Team · Last reviewed · Method
Capacity truth
The watt-hour number on the box isn't what reaches your devices. Rated on the label vs what actually leaves an outlet.
1,024 Wh. Show source
claimed sourceoupes.com ↗2026-07-04The marketing number — total cell capacity.
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.
What it can run
Same sourced device assumptions used by our calculators, applied to this model's usable AC energy. Actual runtime varies with load, temperature, and standby draw.
| Device | Estimated runtime | Sourced assumption |
|---|---|---|
| CPAP (humidifier off) | about 12.1 nights | 9 W · |
| CPAP (heated humidifier on) | about 1.9 nights | 56 W · |
| Refrigerator (full-size) | about 14 hours | 180 W × 35% duty cycle · |
| Wi-Fi router + modem | about 48 hours | 18 W · |
| Laptop (65W charger) | about 27 hours | 65 W × 50% duty cycle · |
| Phone (one full charge) | about 43 full charges | 20 W · |
Who it fits
Mechanical matches against this model's own sourced specs — never invented sentiment, never a guess on a spec we don't have.
12.6 kg with 800 W solar input → carry-in, solar-rechargeable
870 Wh AC-delivered (est.) → multiple CPAP nights per charge
2000 W inverter, 870 Wh AC-delivered (est.) → runs a fridge through an outage
How it scores
Four buyer pillars over seven sub-scores — computed from sourced data with a published formula, price-independent by design.
Power
Battery-side usable capacity and how much you can run at once.
Usable watt-hours and how far you can grow it with add-on batteries, versus its size class.
Continuous and surge wattage, outlet count, and USB-C fast-charging.
Trust
42% dataOwner reputation, safety record, warranty, and build durability.
Owner ratings, brand reputation, recall record, and warranty backing.
Rated cycle life, warranty length, cell chemistry, and weather sealing.
Charging
Wall and solar recharge speed.
Wall recharge speed, solar input, and multi-source charging.
Livability
62% dataLightweight, portable, and quiet enough to live with.
Weight, footprint, handle, and wheels, versus its size class.
Fan noise under load — quieter is better for bedrooms and CPAP use.
How this score is computed
The BatteryRank score is computed from sourced data with a published formula — ranked by data, not lab testing. Seven sub-scores blend into a 0–100 composite, grouped into four buyer pillars. Price is deliberately not a scoring input: prices move daily, so value intelligence lives in the price section above, judged against this model's own history.
| Pillar | Built from |
|---|---|
| Power | Capacity & expansion + Output & versatility |
| Trust | Trust & reliability + Durability & longevity |
| Charging | Charging & solar |
| Livability | Portability + Quiet / livability |
Scores are cohort-relative — each model is ranked against others in its size class. Missing inputs renormalize out rather than scoring zero (a model is never penalized for a spec nobody in its class publishes), and any figure resting on a documented estimate is tagged est. A full methodology page is coming.
Full specifications
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Tap or focus a figure to view its source.
Capacity & battery
- Battery-side usable capacity
1,024 Wh. Show source
claimed sourceoupes.com ↗- Rated cycle life
3,500 cycles. Show source
claimed sourceoupes.com ↗- Battery chemistry
LiFePO4. Show source
claimed sourceoupes.com ↗- Max capacity with expansion
5,120 Wh. Show source
claimed sourceoupes.com ↗- Rated capacity
1,024 Wh. Show source
claimed sourceoupes.com ↗- Cycle-life threshold
80 %. Show source
claimed sourceoupes.com ↗
Energy available from the battery before output-conversion losses. AC-delivered capacity is shown separately in Capacity Truth.
How many full charge-and-drain cycles before the battery drops to its rated threshold (shown alongside — brands rate to different thresholds, so never compare bare cycle counts).
The type of battery cell. LiFePO4 (LFP) cells last far more cycles and are more thermally stable than older lithium-ion (NMC) cells.
The largest total capacity this unit can reach once you add every supported expansion battery.
The battery's nameplate energy capacity — the headline number on the box. Battery-side usable and AC-delivered capacity are shown separately.
The remaining-capacity level the cycle rating is measured to. 3,000 cycles to 80% is a stronger battery than 3,000 cycles to 70% — always read the two numbers together.
Power output
- Continuous power output
2,000 W. Show source
claimed sourceoupes.com ↗- Surge power output
4,500 W. Show source
claimed sourceoupes.com ↗- AC outlets
4 outlets. Show source
claimed sourceoupes.com ↗- USB-A ports
4 ports. Show source
claimed sourceoupes.com ↗- USB-C ports
2 ports. Show source
claimed sourceoupes.com ↗- USB-C max output
100 W. Show source
claimed sourceoupes.com ↗
The most power you can draw at once, sustained — this has to be higher than the running wattage of whatever you're plugging in.
A brief power spike the unit can absorb when a device first switches on — matters for things with motors or compressors, like fridges.
How many standard wall-style outlets are built in.
How many USB-A ports are built in, for charging older phones, lights, and accessories.
How many USB-C ports are built in — check the per-port wattage below if you need fast charging for a laptop.
The fastest a single USB-C port can charge a device — relevant for laptops and fast-charging phones.
Charging & solar
- Max solar input
800 W. Show source
claimed sourceoupes.com ↗
The most solar panel wattage the unit can accept — undersized panels just mean slower charging, not damage, but oversizing this is wasted money.
Reliability & durability
- UPS switchover time
20 ms. Show source
claimed sourceoupes.com ↗
How fast the unit takes over when grid power cuts out. Under ~20ms is fast enough that most electronics — including many CPAP machines — won't even blip.
Size & portability
- Weight
12.6 kg. Show source
claimed sourceoupes.com ↗
How much the unit weighs on its own, without accessories — relevant for portability and carrying it up stairs during an outage.
What reviewers & owners report
Named outlets and marketplaces, each rating credited where it was published.
Brand reputation: Value brand with real US traction (won a "Best Value" editorial nod). Trustpilot 4.5/3107 is strong for the price tier. No US BBB profile. Light (12.6kg) for 1024Wh/2000W; high 4500W surge.
What else to consider instead of the Oupes Mega 1
Same or adjacent size class, ordered by the price-independent composite. Every alternative is better than the Oupes Mega 1 at something and worse at something else, so each row states both halves — each one arithmetic on two sourced readings, with a dimension skipped rather than guessed when either side is missing a figure.
- EcoFlow DELTA 3 Plusscore 72 · same size class
- Why you would switch
- The EcoFlow DELTA 3 Plus takes 25% more rated solar input (1,000 W vs 800 W) for off-grid recharging.
- What you give up
- The Oupes Mega 1 carries 11% more continuous output (2,000 W vs 1,800 W), which decides what it can run at all.
- DJI Power 1000 V2score 71 · same size class
- Why you would switch
- The DJI Power 1000 V2 carries 30% more continuous output (2,600 W vs 2,000 W), which decides what it can run at all.
- What you give up
- Nothing the sourced data can show — the Oupes Mega 1 leads on no compared dimension by a margin worth acting on.
- Anker SOLIX C1000 Gen 2score 68 · same size class
- Why you would switch
- Nothing in the sourced data separates it from the Oupes Mega 1 by a margin worth acting on.
- What you give up
- The Oupes Mega 1 takes 33% more rated solar input (800 W vs 600 W) for off-grid recharging.
- EcoFlow DELTA 3score 68 · same size class
- Why you would switch
- Nothing in the sourced data separates it from the Oupes Mega 1 by a margin worth acting on.
- What you give up
- The Oupes Mega 1 carries 11% more continuous output (2,000 W vs 1,800 W), which decides what it can run at all.
- Bluetti Elite 100 v2score 67 · same size class
- Why you would switch
- The Bluetti Elite 100 v2 delivers 15% more usable AC energy (1,000 Wh vs 870 Wh).
- What you give up
- The Oupes Mega 1 carries 11% more continuous output (2,000 W vs 1,800 W), which decides what it can run at all.
Quick answers
Each answer restates a sourced figure from elsewhere on this page — nothing new, nothing guessed.
- How much does the Oupes Mega 1 weigh?
- 12.6 kg (27.8 lb), manufacturer-claimed, without accessories.
- What are the dimensions of the Oupes Mega 1?
- 384 × 232 × 295 mm (15.1 × 9.1 × 11.6 in), length × width × height, manufacturer-claimed.
- How much capacity does the Oupes Mega 1 deliver through an AC outlet?
- About 870 Wh of the rated 1,024 Wh reaches an AC outlet from a full charge — an estimate after our published 15% inverter-loss constant (marked est. on this page).
- How many watts can the Oupes Mega 1 output?
- 2,000 W continuous AC output and 4,500 W surge output, manufacturer-claimed. Appliance startup demand must stay within the relevant limit.
- How much solar input can the Oupes Mega 1 accept?
- 800 W maximum solar input, manufacturer-claimed. Actual harvest depends on panel compatibility, sun, orientation, temperature, and conversion losses.
- What is the cycle-life rating of the Oupes Mega 1?
- 3,500 cycles to 80% remaining capacity, manufacturer-claimed. A cycle rating is not a calendar-life guarantee.
- Can the Oupes Mega 1 work as a UPS?
- Its manufacturer-claimed transfer time is 20 ms. Confirm that your connected equipment tolerates that transfer time; this is not the same as a zero-transfer online UPS.
- How far can the Oupes Mega 1 expand?
- Up to 5,120 Wh with compatible expansion hardware, manufacturer-claimed. The base-unit capacity and expansion-system capacity are shown separately.