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EcoFlow DELTA Pro (PV400W) Review
3,000Wh of storage, 4,500W continuous output. Listed at $2,399 at EcoFlow.
The EcoFlow DELTA Pro (PV400W) is a extra large 2,600wh+ unit holding 3,000Wh. At $0.80 per watt-hour it is priced above the median for the band, so you are paying a premium over comparable capacity. It lists at $2,399 against an $7,936 MSRP.
Price and stock are shown on Amazon. We may earn a commission, which never changes what the figures say.
Computed from this unit’s published specification, not from a manufacturer claim. Method and the full catalogue comparison are in our power station price index.
What the EcoFlow DELTA Pro (PV400W) will run, and for how long
Runtimes below are calculated from the 3,000Wh rated capacity, derated to 85% for AC loads and 92% for USB and 12V loads to cover inverter and conversion losses. They are arithmetic, not lab measurements, but they are the same arithmetic applied to every unit we track, so the comparison holds. Anything drawing more than the 4,500W continuous rating is left off the list because this unit cannot carry it.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 230 charges |
| Wi-Fi router (10W) | 255 hr |
| LED work light (10W) | 276 hr |
| CPAP, humidifier off (40W) | 64 hr |
| Laptop (60W) | 43 hr |
| 12V portable fridge (45W avg) | 57 hr |
| 55-inch TV (90W) | 28 hr |
Real figures land below these. A fridge cycles rather than drawing continuously, and cold weather costs a lithium pack usable capacity, so treat the table as the ceiling rather than the expectation.
EcoFlow DELTA Pro (PV400W) specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 3,000Wh |
| Continuous AC output | 4,500W |
| Warranty | 5 years |
| Price at EcoFlow | $2,399 |
| Cost per watt-hour | $0.80 |
How the EcoFlow DELTA Pro (PV400W) compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| EcoFlow DELTA Pro (PV400W) | Jackery Explorer 3000 v2 | BLUETTI Elite 300 | |
|---|---|---|---|
| Capacity | 3,000Wh | 3,000Wh | 3,014Wh |
| Output | 4,500W | 3,600W | 2,400W |
| Cycle life | — | — | 6,000 cycles |
| Weight | — | — | 58 lb |
| Price | $2,399 | $2,499 | $1,099 |
| Cost per watt-hour | $0.80 | $0.83 | $0.36 |
Where the EcoFlow DELTA Pro (PV400W) sits in its band
We track 19 units in the extra large 2,600wh+ band with both a price and a published capacity. They run from $799 to $5,998.95, and from 1,536Wh to 5,120Wh. On cost per watt-hour the EcoFlow DELTA Pro (PV400W) ranks 14 of 19, where 1 is the cheapest capacity in the band. That puts it in the most expensive third, so it has to earn the difference somewhere other than raw capacity. Ranking on cost per watt-hour deliberately ignores build quality, port selection and warranty, so read it as one input rather than as the answer.
Alternatives to the EcoFlow DELTA Pro (PV400W)
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- Jackery Explorer 3000 v2 review — 3,000Wh, 3,600W output, listed at $2,499, $0.83 per watt-hour, dearer capacity than the EcoFlow DELTA Pro (PV400W).
- BLUETTI Elite 300 review — 3,014Wh, 2,400W output, listed at $1,099, $0.36 per watt-hour, cheaper capacity than the EcoFlow DELTA Pro (PV400W).
- Goal Zero Yeti 3000X review — 3,032Wh, 100W output, listed at $2,999.95, $0.99 per watt-hour, dearer capacity than the EcoFlow DELTA Pro (PV400W).
- EcoFlow DELTA 3 Ultra Plus (3072Wh) review — 3,072Wh, 3,600W output, listed at $1,599, $0.52 per watt-hour, cheaper capacity than the EcoFlow DELTA Pro (PV400W).
Who the EcoFlow DELTA Pro (PV400W) suits
It is a sensible buy for whole-circuit backup, extended off-grid stays, and running heavy appliances without rationing them. It is the wrong tool for anyone who needs something genuinely portable, since capacity at this level comes with real weight.
EcoFlow DELTA Pro (PV400W) questions
How long will the EcoFlow DELTA Pro (PV400W) run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 3,000Wh, derated to 85% for inverter losses, that is roughly 51 hr on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the EcoFlow DELTA Pro (PV400W) be charged by solar?
EcoFlow does not publish a maximum solar input for this model. Rather than estimate one, we leave it out. Check the manual that ships with the unit before buying panels for it.
What warranty does the EcoFlow DELTA Pro (PV400W) 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.
Is the EcoFlow DELTA Pro (PV400W) worth it?
At $2,399 it works out at $0.80 per watt-hour. It costs more per watt-hour than the median unit in its band, so the case for it rests on the features rather than on the price. Read the comparison table above against the two closest rivals before deciding.
What is not published
EcoFlow does not state the rated cycle life, the weight, the maximum solar input 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.