Verification
+4.0 EcoFlowNo overlap — every EcoFlow product beats every OUPES product here.
Brand comparison
EcoFlow vs OUPES
EcoFlow scores 7.6 across 13 products; OUPES scores 6.1 across 7. They overlap in portable stations. That is 77% of what EcoFlow sells and 86% of what OUPES sells. EcoFlow leads on verification.
7.6
6.1
Across everything we scored, EcoFlow sits 1.52 ahead — led by verification.
Both brands also sell into Home Backup Power Systems. Neither side carries enough scored products there for a median we would publish, so this comparison does not cover them.
Brand verdict
ahead · +1.52 (7.6 vs 6.1)
Pick EcoFlow when
Verification matters most6.0vs2.0
Pick OUPES when
a criterion we do not score decides it — OUPES leads on none of the ones we do.
Scored 11 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Most common complaints
From owner reviews of each brand's top-scored product in Portable Stations.
EcoFlow DELTA Pro Portable Power Station
- Durability and the pull handle, tagged negative in 11 mentions
- Battery life, tagged negative in 8 mentions
- Smoke from the unit, seven events from six owners
OUPES Mega 3 Portable Power Station
- B2 battery stopped charging from the station, per one owner
- Barely handled loads above 3,600 W, per one reviewer
- Recovery charge needed after a full drain, per one channel
Where EcoFlow and OUPES differ
Median scores on a 0–10 scale. Each row is one criterion.
Backup Readiness
+1.0 EcoFlowEcoFlow 3.0–10.0 vs OUPES 5.0–6.0.
Capacity
tiedEcoFlow 3.0–10.0 vs OUPES 1.0–7.0.
Power Output
tiedEcoFlow 3.0–10.0 vs OUPES 3.0–10.0.
Recharging
tiedEcoFlow 4.0–10.0 vs OUPES 4.0–10.0.
Battery Life
tiedEcoFlow 4.0–8.0 vs OUPES 6.0–8.0.
Warranty & Support
tiedEcoFlow 5 Years (13); OUPES 5 Years (7).
Value
Only EcoFlow is scored here (5.0 from 3 of 13). OUPES sits below the floor (1 of 7).
The scores above are our reading of the evidence below. This is the evidence.
Safety listings are recorded per product from the certifier's own directory or a certificate the maker publishes, not from the maker's wording. A UL listing can be checked by model in UL Product iQ.
Warranty terms
EcoFlow
13 of 13
OUPES
7 of 7
What EcoFlow and OUPES owners report
Independent sources pooled per brand. Each row is one source.
N of M = how many scored products carry the brand-level reading shown, out of all scored.
YouTube
+1.0 EcoFlowEcoFlow 6.0–8.0 vs OUPES 6.0–8.0.
Amazon
+1.0 EcoFlowEcoFlow 7.0–9.0 vs OUPES 7.0–8.0.
EcoFlow 4.0–7.0 vs OUPES 4.0–6.0.
EcoFlow 6.0–9.0 vs OUPES 6.0–8.0.
Owner reviews
tiedOUPES: 1 of 7 scored products carry this reading.
Source details
OUPES
- No US retailer lists the Exodus 700, and no other Exodus station carries a retailer review.
- The only rated OUPES station file at a US retailer is Walmart's Mega 1 and Mega 1 Lite listing (item 11344470227), sold by OUPES's own store: 4.3 from 136 ratings, 4.3 from 132 with Walmart's four incentivized reviews set aside, for a 1,024 Wh station rather than this one.
Brand rollup across scored products.
1 of 7 scored products carry this reading
Best EcoFlow vs best OUPES, category by category
The three best-scoring products each brand sells in every category they both compete in, ranked by overall score.
Portable Stations
See all Portable Stations products
EcoFlow leads
9.0
1st of 74 in Portable Stations
Strengths
- 3,600 W continuous output
- 3,600 Wh in one unit
- Expands to 10.8 kWh with two extra batteries
- Takes 1,600 W of solar at up to 150 V
Drawbacks
- 99 lb
- 240 V needs two units and a hub
- Switchover up to 30 ms
- 2.7 hours to charge on 120 V
7.0
14th of 74 in Portable Stations
Strengths
- 3,600 W continuous from five 20 A outlets and a TT-30R
- 2,100 W solar input at 12 to 148 V
- 86 to 88 percent usable on AC in two testers' runs
- Expands to a rated 15.36 kWh with six B2 batteries
Drawbacks
- 120 V onlyand two units cannot be paired
- UPS mode covers loads up to 2,200 W only
- Barely handled loads above 3,600 W in TheSolarLab's test despite a 7,000 W surge rating
- No OUPES transfer switchthe product page points to a third-party kit
8.3
3rd of 74 in Portable Stations
Strengths
- 1,600 W of solar over two inputs
- 3,600 W continuous output
- Expands to 11 kWh with extra batteries
- TT-30 outlet for RVs
Drawbacks
- No 240 V output
- No published cycle rating
- 74.3 lb
- An overload shuts off only some outlets in two tests
6.4
26th of 74 in Portable Stations
Strengths
- Expands to 5,120 Wh with two B2 batteries
- Full AC charge in 43 minutes in Outdoor Life's test
- 2,000 W continuous with a 4,500 W surge
- 800 W solar input2,200 W with AC and solar together
Drawbacks
- UPS switchover of 20 ms in the manualslower than 10 ms
- Very loud cooling fansper TheSolarLab
- 50 W drawn by the inverter and AC portper Outdoor Life
- An owner's unit would not recharge after a full discharge (E022)
8.0
5th of 74 in Portable Stations
Strengths
- 1,000 W of solar over two inputs
- Full wall charge in 56 minutes
- Two 140 W USB-C ports
- Expands to 5 kWh with extra batteries
Drawbacks
- Sold on pre-ordershipping November
- Fans slow to ramp under heavy load in TheSolarLab's test
- Real surge about 2,600 W against 3,600 W claimed
- No transfer switch sold for it
6.3
29th of 74 in Portable Stations
Strengths
- Full AC charge in 44 minutes in CNET's test
- 2,000 W continuous with a 4,500 W surge
- 800 W solar input2,200 W with AC and solar together
- Two 140 W USB-C ports
Drawbacks
- No expansion battery port
- OUPES's own Walmart listings rate the inverter at 1,800 W, not 2,000 W
- 854.94 Wh drawn by CNET83 percent of rated
- No generator charging input
EcoFlow vs OUPES: the numbers
7.6
Products scored13 of 13
Price range$389 – $7,714
6.1
Products scored7 of 7
Price range$399 – $2,699
EcoFlow vs OUPES: common questions
Is EcoFlow or OUPES better?
EcoFlow 7.6 from 13 scored products; OUPES 6.1 from 7.
What is the biggest difference between EcoFlow and OUPES?
Verification: EcoFlow medians 6.0, OUPES medians 2.0 (EcoFlow by 4.0).
Which is better for backup readiness, EcoFlow or OUPES?
EcoFlow on backup readiness — EcoFlow 7.0, OUPES 6.0.
Which EcoFlow and OUPES portable stations should I buy?
EcoFlow: EcoFlow DELTA Pro Portable Power Station. OUPES: OUPES Mega 3 Portable Power Station.
How does Stuff VS Things score EcoFlow and OUPES?
Our own product medians: 13 EcoFlow and 7 OUPES. A criterion is compared only where both brands clear the floor.
Other comparisons
Scores calculated 11 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score