OUPES Our score 7.8/10 #17 of 17 mid-size for real capacity
OUPES Mega 1
Updated
OUPES's 1 kWh unit with 2,000 W of output, four 20 A outlets and an expansion port for up to two B2 batteries.
Independent tests put this portable power station's usable capacity at 809 Wh, 79% of the rated 1,024 Wh (the median of 3 tests).
Real capacity
809of 1,024 Wh
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Outdoor Life
76%
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Outdoor Life
92%
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The Solar Lab
79%
AC output
2,000 W
More than 12 of the 16 other mid-size models we review. 4,500 W surge.
Cost per usable Wh
$0.86
#28 of 33 models we've priced.
PriceyWeight
27.8 lb
29 usable Wh per lb
Battery
LiFePO4
Long-life chemistry
Warranty
5 years
Wall charge
58 min
Fast mode (1,400 W). Slow mode is 700 W.
How much of the 1,024 Wh do you get?
Each bar is the full rated capacity. Blue is what the tester measured coming out of the AC outlets; the striped end is what was lost.
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Outdoor Life 780 Wh · 76%
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Outdoor Life 940 Wh · 92%
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The Solar Lab 801 Wh · 79%
At light loads it delivers much less
At about 34 W, Outdoor Life measured 610 Wh, 60% of rated. The unit's own running costs take a bigger share when the load is small. Bear this in mind for a CPAP, a fridge overnight or a few lights.
How long will it run your devices?
Add what you want to power and see how long the OUPES Mega 1 lasts on its tested 809 Wh, counting the power it uses on itself and any solar panels you add.
Our score: 7.8 out of 10
Worked out from the tested capacity and the specs on this page, compared with the other models we track. Capacity, power and charging are compared with the 17 mid-size models; battery, build and features with all 37. Price isn't part of it. How we score.
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Capacity and power 35% of the score 7.5
What goes into capacity and power Measure This model Score Tested usable capacity 60% 809 Wh 6.3 Continuous AC output 25% 2,000 W 9.1 AC surge 15% 4,500 W 9.7 Compared with the 17 mid-size models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
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Charging 25% of the score 7.9
What goes into charging Measure This model Score Wall charge to full 40% 58 min 8.0 Max solar input 35% 800 W 8.9 UPS switchover 25% 20 ms 6.2 Compared with the 17 mid-size models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
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Battery and build 25% of the score 8.1
What goes into battery and build Measure This model Score Battery type 30% LiFePO4 10.0 Cycle life to 80% 25% 3,500 cycles 6.9 Warranty 25% 5 years 8.5 Usable Wh per lb 20% 29 Wh/lb 6.6 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
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Features 15% of the score 7.9
What goes into features Measure This model Score Expandable battery 25% Yes 10.0 AC + USB-C outlets 20% 6 7.8 USB-C max output 15% 100 W 7.0 240 V output 15% No 5.0 App control 15% Yes 10.0 Wheels 10% No 5.0 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
Pros and cons
Pros
- Expandable to 5,120 Wh with two B2 batteries, per OUPES's product page.
- 2,000 W continuous output, 4,500 W surge.
- Up to 800 W of solar input.
- Full wall charge in 58 minutes at 1,400 W in Fast mode, per OUPES.
- 5-year warranty.
Cons
- Test results vary: 76% and 92% in Outdoor Life's two runs at about 380 W, and 79% at 1,779 W in The Solar Lab's test.
- Its 36-minute charging claim needs wall and solar charging together.
- The car socket and two 12 V ports share 130 W in total.
- No UL or ETL listing shown, only an FCC notice and shipping-safety documents.
Who it's for
Buyers who want a 1 kWh unit now and the option to add batteries later.
Who should skip it
Skip it if you won't expand: the Mega 1 Lite has the same battery and inverter and costs less.
Features
- Battery backup (UPS) mode : yes
- Takes extra batteries : yes
- LiFePO4 battery : yes
- Solar input, 800 W : yes
- Car charging : yes
- 240 V output : no
- RV outlet (TT-30) : no
- App control : yes
- Wheels : no
How it compares with other mid-size models
| Model | Usable | Delivered | Price | Value |
|---|---|---|---|---|
| OUPES Mega 1 1,024 Wh rated | 809 Wh | 79% | $699 | Pricey |
| UDPower C600 596 Wh rated | 497 Wh | 83% | – | No price checked yet |
| Duracell G800 620 Wh rated | 503 Wh | 81% | $699 | Pricey |
| Goal Zero Yeti 700 677 Wh rated | 560 Wh | 83% | $699.95 | Pricey |
| Dabbsson 600L 768 Wh rated | 653 Wh | 85% | $299 | Great value |
| Anker SOLIX C1000 Gen 2 1,024 Wh rated | 880 Wh | 86% | $499.99 | Good value |
| BLUETTI Elite 100 V2 1,024 Wh rated | 890 Wh | 87% | $489 | Good value |
| DJI Power 1000 V2 1,024 Wh rated | 840 Wh | 82% | – | No price checked yet |
| EcoFlow DELTA 3 1,024 Wh rated | 885 Wh | 86% | $629 | Fair price |
| EcoFlow DELTA 3 Classic 1,024 Wh rated | 947 Wh | 93% | $499 | Good value |
| EcoFlow DELTA 3 Plus 1,024 Wh rated | 875 Wh | 85% | $719 | Pricey |
| OUPES Mega 1 Lite 1,024 Wh rated | 855 Wh | 84% | $599 | Fair price |
| Anker SOLIX C1000 (first gen) 1,056 Wh rated | 950 Wh | 90% | $469.99 | Great value |
| Jackery Explorer 1000 v2 1,070 Wh rated | 923 Wh | 86% | $499 | Good value |
| ALLPOWERS R1500 1,152 Wh rated | 956 Wh | 83% | $539 | Good value |
| BLUETTI AC180 1,152 Wh rated | 991 Wh | 86% | $499 | Good value |
| Jackery Explorer 1000 Plus 1,264 Wh rated | 1,090 Wh | 86% | $619 | Good value |
Questions
How much usable power does the OUPES Mega 1 have?
About 809 Wh, from the middle of three results (79% of the rated 1,024 Wh). Outdoor Life measured 780 Wh and 940 Wh in two runs at about 380 W, and The Solar Lab measured 801 Wh at 1,779 W.
What's the difference between the OUPES Mega 1 and Mega 1 Lite?
They share the 1,024 Wh battery and the 2,000 W inverter. The Mega 1 adds an expansion port for B2 batteries and has four USB-A ports instead of two. Its USB-C ports top out at 100 W rather than 140 W, and it weighs 27.8 lb against 26.75 lb.
How fast does the OUPES Mega 1 charge?
58 minutes from the wall at 1,400 W in Fast mode, or about 1.9 hours in Slow mode at 700 W, per OUPES. Its 36-minute claim needs wall and solar charging together (2,200 W).
Full specs
From the maker's US manual or product page unless noted. Each value links to where we found it.
Capacity and battery
- Maximum with extra batteries
- 5,120 Wh From OUPES's product page; the manuals don't say how many B2 batteries fit.
- oupes.com (source for Maximum with extra batteries)
Output and ports
- Boost mode (heating loads only)
- Not published
- 12 V car outlet
- Yes Shares 130 W in total with the two DC5521 ports, per the manual.
- cdn.shopify.com (source for 12 V car outlet)
Charging
- Wall charge to full
- 58 min Fast mode (1,400 W). Slow mode is 700 W.
- oupes.com (source for Wall charge to full)
- Battery backup (UPS) mode
- Yes Keep total input plus output under 2,000 W, per the manual.
- cdn.shopify.com (source for Battery backup (UPS) mode)
Size and build
- Noise (maker’s figure)
- Not published
Warranty and certification
- Warranty
- 5 years Covers units bought through OUPES's official North American channels.
- oupes.com (source for Warranty)
Where this data comes from
Capacity figures come from the independent testers linked above. We record their numbers, the date and the load, and link to their reports; the testing is theirs. Specs come from OUPES's own US documents, and we note where they disagree with each other or with test results. Prices are checked by hand on the brand's US store.