EcoFlow DELTA 3 Classic vs UDPOWER C400
Comparing EcoFlow DELTA 3 Classic vs UDPOWER C400: EcoFlow DELTA 3 Classic scores 8.8/10 and UDPOWER C400 scores 8.4/10 in our benchmark testing. EcoFlow DELTA 3 Classic wins overall — EcoFlow DELTA 3 Classic scores higher on power and features while UDPOWER C400 offers better value.
EcoFlow DELTA 3 Classic (1000Wh) vs UDPOWER C400 (256Wh) compared spec-by-spec. Real-world testing, pricing, pros, cons, and our verdict on which power station to buy.
| Specification | ||
|---|---|---|
| Capacity | 1,000Wh ✓ Winner | 256Wh |
| AC Output | 1,800W ✓ Winner | 400W |
| Surge Output | 3,600W ✓ Winner | 800W |
| Weight | — | 6.88 lbs |
| Dimensions | — | 8.3 x 5.1 x 7.1 in |
| Battery Type | — | LiFePO4 |
| Cycle Life | — | 4,000 cycles |
| AC Charge Time | — | 90 min (0-80%) |
| Max Solar Input | — | 150W |
| AC Outlets | — | 2 |
| USB-C Ports | — | 2 |
| USB-A Ports | — | 1 |
| DC Outlets | — | 3 |
| Expandable | — | No |
| Operating Temp | — | 32-104F |
| Warranty | — | 5 years |
| App Control | — | No |
Buy the EcoFlow DELTA 3 Classic
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Buy the UDPOWER C400
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Who Should Buy the EcoFlow DELTA 3 Classic?
The EcoFlow DELTA 3 Classic is the right choice for under 1000, car camping, remote work. With 1,000Wh of capacity and 1,800W continuous output, it delivers serious power for demanding loads.
Key advantages include: 1kwh of usable capacity for camping, remote work, and short outages at just $599; 1,800w continuous (3,600w surge) covers microwaves, coffee makers, and most kitchen loads; entry price undercuts the ecoflow delta 3 plus while keeping delta 3 platform features.
Priced at $599, the EcoFlow DELTA 3 Classic scores 8.8/10 overall in our benchmark testing — making it a strong performer for most users.
Who Should Buy the UDPOWER C400?
The UDPOWER C400 is the right choice for under 1000, car camping, tailgating. With 256Wh of capacity and 400W continuous output, it delivers serious power for demanding loads.
Key advantages include: vehicle jump-start capable (400a ec5 port) — rare at this capacity tier; 4,000+ cycle lifepo4 at $170-240; two ac outlets at 256wh; competitors usually offer one. At 6.88 lbs, it's genuinely portable.
Priced at $200 (MSRP $300), the UDPOWER C400 scores 8.4/10 overall in our benchmark testing — making it a strong performer for most users.
How Do the Specs Compare?
Capacity: The EcoFlow DELTA 3 Classic leads on storage with 1,000Wh versus 256Wh for the UDPOWER C400 — a 291% difference that matters most for overnight or multi-day use cases.
Output: The EcoFlow DELTA 3 Classic delivers more continuous power at 1,800W vs 400W, which determines what appliances you can run simultaneously — things like air conditioners, microwaves, and power tools that demand 1,000W or more.
Price: The UDPOWER C400 costs $200 while the EcoFlow DELTA 3 Classic runs $599 — a $399 gap. Whether that premium is worth it depends on how often you'll push the unit's limits.
🏆 Our Verdict
Choose the EcoFlow DELTA 3 Classic if you need maximum capacity (1,000Wh vs 256Wh) and higher power output (1,800W).
Choose the UDPOWER C400 if you prioritize value (typically $399 less) .
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