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EcoFlow DELTA 3 Ultra Series (3072Wh) Review
3,072Wh of storage, 3,600W continuous output, LiFePO4 cells. Listed at $1,399 at EcoFlow.
The EcoFlow DELTA 3 Ultra Series (3072Wh) is a extra large 2,600wh+ unit holding 3,072Wh. At $0.46 per watt-hour it is priced about where the rest of the band sits. It uses LiFePO4 cells, so it is built to be kept rather than replaced. It lists at $1,399 against an $4,998 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 3 Ultra Series (3072Wh) will run, and for how long
Runtimes below are calculated from the 3,072Wh 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 3,600W continuous rating is left off the list because this unit cannot carry it, though the 7,200W surge rating covers brief startup spikes from motors and compressors.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 235 charges |
| Wi-Fi router (10W) | 261 hr |
| LED work light (10W) | 283 hr |
| CPAP, humidifier off (40W) | 65 hr |
| Laptop (60W) | 44 hr |
| 12V portable fridge (45W avg) | 58 hr |
| 55-inch TV (90W) | 29 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.
Charging and power delivery
Switchover to battery is rated at 10ms, fast enough to keep a desktop or a router from dropping.
EcoFlow does not publish a maximum solar input for this model, so we do not state one.
EcoFlow DELTA 3 Ultra Series (3072Wh) specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 3,072Wh |
| Continuous AC output | 3,600W |
| Surge / peak | 7,200W |
| Cell chemistry | LiFePO4 |
| UPS switchover | 10ms |
| Warranty | 5 years |
| Price at EcoFlow | $1,399 |
| Cost per watt-hour | $0.46 |
How the EcoFlow DELTA 3 Ultra Series (3072Wh) compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| EcoFlow DELTA 3 Ultra Series (3072Wh) | Pecron E3600LFP 3600W 3072Wh | Pecron F3000LFP 3600W 3072Wh | |
|---|---|---|---|
| Capacity | 3,072Wh | 3,072Wh | 3,072Wh |
| Output | 3,600W | 3,600W | 3,600W |
| Cycle life | — | 3,500 cycles | 3,500 cycles |
| Weight | — | 79 lb | 63 lb |
| Price | $1,399 | $999 | $1,168 |
| Cost per watt-hour | $0.46 | $0.33 | $0.38 |
Where the EcoFlow DELTA 3 Ultra Series (3072Wh) 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 3 Ultra Series (3072Wh) ranks 7 of 19, where 1 is the cheapest capacity in the band. That puts it in the cheapest third, which is the single strongest thing on its spec sheet. 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 3 Ultra Series (3072Wh)
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- EcoFlow DELTA 3 Ultra Plus (3072Wh) review — 3,072Wh, 3,600W output, listed at $1,599, $0.52 per watt-hour, dearer capacity than the EcoFlow DELTA 3 Ultra Series (3072Wh).
- Pecron E3600LFP 3600W 3072Wh review — 3,072Wh, 3,600W output, listed at $999, $0.33 per watt-hour, cheaper capacity than the EcoFlow DELTA 3 Ultra Series (3072Wh).
- Pecron F3000LFP 3600W 3072Wh review — 3,072Wh, 3,600W output, listed at $1,168, $0.38 per watt-hour, cheaper capacity than the EcoFlow DELTA 3 Ultra Series (3072Wh).
- 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 3 Ultra Series (3072Wh).
Who the EcoFlow DELTA 3 Ultra Series (3072Wh) 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 3 Ultra Series (3072Wh) questions
How long will the EcoFlow DELTA 3 Ultra Series (3072Wh) run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 3,072Wh, derated to 85% for inverter losses, that is roughly 52 hr on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the EcoFlow DELTA 3 Ultra Series (3072Wh) 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.
Does the EcoFlow DELTA 3 Ultra Series (3072Wh) work as a UPS?
It switches to battery in about 10ms. That is quick enough for a desktop computer, a router or a modem, all of which tolerate a gap in that range without rebooting.
What warranty does the EcoFlow DELTA 3 Ultra Series (3072Wh) 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 3 Ultra Series (3072Wh) worth it?
At $1,399 it works out at $0.46 per watt-hour. It costs less per watt-hour than the median unit in its band, which is the strongest argument in its favour. 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.