Short Home Outages
Keeping the fridge, Wi-Fi and phones alive for hours
oupes · Large
oupes Mega 2
2.05 kWh of storage, 2.5 kW of continuous AC output, listed at $729. That works out to $0.36 per watt-hour and 42.2 watt-hours per pound.
2.05 kWh2.5 kW AC48.5 lbLiFePO43,500 cycles
from owners, collected by oupes
More product images
Further photographs published by oupes for this model. We use the manufacturer’s own product imagery rather than stock photography, so what you see is the actual unit.
What this unit is for
A price-attack brand: large capacity and output figures at the lowest end of the market, aimed squarely at first-time buyers shopping on price.
Best suited to: Buyers who need maximum capacity for the least money and accept the trade-offs. Less suited to: Buyers who value support, app quality or long-term resale.
Home backup through an outage, RV living.
Specifications
15 of 19 fields are published by oupes for this model. The rest are shown as “—” and are excluded from rankings rather than estimated.
| Capacity | 2.05 kWh |
|---|---|
| AC output (continuous) | 2.5 kW |
| AC surge | 5.4 kW |
| Power lifting / boost | — |
| Battery chemistry | LiFePO4 |
| Rated cycles | 3,500 |
| Weight | 48.5 lb |
| AC recharge to full | — |
| Max solar input | 2.1 kW |
| AC outlets | 4 |
| USB-C ports | 2 |
| USB-A ports | 4 |
| 12V car port | — |
| UPS switchover | 20 ms |
| Max expandable capacity | 10.24 kWh |
| Warranty | 60 months |
| Noise level | — |
| Ingress protection | IP21 |
| Operating temp (low) | 30 °F |
| List price | $729 |
Where these numbers come from. Every figure on this page is taken from oupes’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: oupes.com/products/oupes-mega-2-home-backup-portable-power-station-2500w-2048wh.
Vendor wording for each figure (15)
capacityWh: “Basic Capacity 2048Wh”acOutputW: “AC Output Power 2500W (Surge 5400W)”acSurgeW: “AC Output Power 2500W (Surge 5400W)”chemistry: “Type LFP (LiFePO4)”cycleLife: “Cycles > 3500 cycles to 80%”weight: “Net Weight 48.5lbs (22.0kg)”solarInputW: “Solar Charging 2100W Max, 12-148V DC”acOutlets: “AC Outlets 4*NEMA 5-20R (120V/20A)”usbCPorts: “USB-C Output 2*USB-C (PD 100W per port)”usbAPorts: “USB-A Output 4*USB-A (18W Max)”upsSwitchoverMs: “switches over in a lightning-fast 20ms”maxExpandableWh: “Expansion Capacity Up to 10.24kWh with 4 B2”warrantyMonths: “The Mega 2 comes with a 5-year warranty.”ipRating: “IP Grade IP21”operatingTempF: “Operating Temperature 0℃~40℃ (30℉~104℉)”
What owners say
All owner voices →4.91from 163 owner ratings
ShellbatesI have had this for a few month now & it has saved $$$ by not using my Oxegen tanks in a power outage.
Donald RobertsThe Oupes Mega 2 is a workhorse for my job sites. Powers all my tools without skipping a beat. It's robust and handles the demands of heavy use impressively.
Richard WilsonI never realized how much I needed a portable power station like Oupes Mega 2 until I had one on my last hiking trip. It's rugged, reliable, and surprisingly lightweight for its power output.
MillardLiving in an area prone to hurricanes, having a reliable power source isn't a luxury; it's a necessity. When our town was hit hard last season, the Oupes Mega 2 wasn't just useful; it was a lifeline. It kept our phones charged, allowing us to stay updated with emergency services and reassure our relatives. Its multiple ports meant we could help neighbors charge their devices too. We even plugged in a small TV for updates on the storm's progress. It's rugged, it's reliable, and in times of crisis, it's indispensable.
The reviews oupes publishes for this model are all positive. That may be the product, or it may be which reviews the vendor chose to publish — treat a one-sided corpus as weaker evidence than a mixed one.
Where it ranks
All rankings →Position among all 107 models we track, in each dimension this unit publishes the inputs for.
| Dimension | Rank | Value |
|---|---|---|
| Best value (cost per watt-hour) | #11 of 104 | $0.36 |
| Most portable (Wh per pound) | #23 of 103 | 42.2 Wh/lb |
| Most inverter headroom | #51 of 106 | 122 W/100Wh |
| Highest solar input | #15 of 83 | 2.1 kW |
| Most expandable | #11 of 36 | 10.24 kWh |
| Longest service life | #25 of 96 | 7168 kWh |
| Most output per dollar | #20 of 103 | 3.43 W/$ |
| Best for home backup | #19 of 106 | 73/100 |
| Longest warranty | #60 of 105 | 60 mo |
Who buys this brand, and why
Full OUPES profile →Who it is for
- First-time buyers whose main filter is price
- Marketplace shoppers comparing capacity figures side by side
- Budget preparedness buyers
- Buyers who want big numbers without paying brand prices
What they will pay extra for
- Almost nothing — this buyer is optimising for price
- A bundled solar panel can still sway the decision
- Free shipping and easy returns
Honest drawbacks
- Documentation and app quality are usually behind the mainstream brands
- Firmware and support responsiveness are the usual risks at this price
- Spec-sheet claims deserve more scrutiny than on a premium unit
- Resale value and long-term parts availability are weaker
Fits these buying scenarios
Mobile Work & Creators
Remote work, film and photo production away from wall power
RV & Van Life
Living and working from a vehicle, on solar and alternator charging
Off-Grid & DIY Solar
Cabins, sheds, job sites and self-built systems
Elsewhere in the oupes range
All oupes models →
Closest rivals by capacity
Other brands’ models nearest in capacity — the units a buyer is most likely to be comparing against this one.
