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EcoFlow DELTA Pro Ultra Review
LiFePO4 cells. Listed at $4,599 at EcoFlow.
The EcoFlow DELTA Pro Ultra is a portable 600 1,200wh unit. It uses LiFePO4 cells, so it is built to be kept rather than replaced. It lists at $4,599 against an $4,899 MSRP.
Manufacturer price at the time of writing. This link is not a paid placement.
Charging and power delivery
Maximum solar input is 400W. Capacity is expandable with add-on batteries, so the starting figure is not the ceiling.
EcoFlow DELTA Pro Ultra specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Cell chemistry | LiFePO4 |
| Weight | 35.2 lb |
| Max solar input | 400W |
| Warranty | 5 years |
| Price at EcoFlow | $4,599 |
Where the EcoFlow DELTA Pro Ultra sits in its band
We track 83 priced units in the portable 600 1,200wh band, running from $119 to $9,199. At $4,599 the EcoFlow DELTA Pro Ultra is the 82 cheapest of 83. Because EcoFlow does not publish a capacity for this model, we cannot rank it on cost per watt-hour, which is the measure we would normally lead with. Price position on its own tells you where it sits in the range but not whether it is good value, and those are genuinely different questions.
Alternatives to the EcoFlow DELTA Pro Ultra
Units we track in the same band that are close enough to be genuine substitutes, matched on price. Each links to its own review.
- Jackery 3000 Pro review — 3,024Wh, listed at $3,449, $1.14 per watt-hour.
- Jackery 5000 Plus review — 5,040Wh, 3,600W output, listed at $3,149, $0.62 per watt-hour.
- EcoFlow DELTA Pro 3 (UL9540 Certificated) review — 4,000W output, listed at $2,799.
- OUPES Guardian 6000 V2 review — 3,600W output, listed at $2,699.
Who the EcoFlow DELTA Pro Ultra suits
This is an accessory rather than a standalone product, so the question is not whether it is good in isolation but whether the system you already own needs it.
Check compatibility against your specific model before ordering: within a single manufacturer, connectors and firmware requirements change between generations more often than the marketing suggests.
EcoFlow DELTA Pro Ultra questions
Can the EcoFlow DELTA Pro Ultra be charged by solar?
Yes. It accepts up to 400W of solar input. Panels rarely hit their rated figure in the field, so plan on about 70% of the panel rating across a clear day.
What warranty does the EcoFlow DELTA Pro Ultra carry?
EcoFlow covers it for 5 years. Cycle life and warranty are different promises, and the cycle figure is the one that tells you how long the pack stays useful.
What is not published
EcoFlow does not state the watt-hour capacity, which is the single figure runtime depends on, the rated cycle life, the continuous AC output for this model. We list figures rather than estimate them, so those rows stay empty until the manufacturer publishes them. If you need one of them to make the decision, ask EcoFlow directly and hold them to the answer.
How we assess these
Every figure on this page comes from the manufacturer, and every derived number, cost per watt-hour and estimated runtime, is calculated the same way for all 437 products we track. That is what makes the comparison meaningful: we are not scoring units against a private impression of them, we are putting published figures side by side and doing the arithmetic in public. Where a manufacturer stays quiet, we say so rather than filling the gap.