Home › Power Stations › EcoFlow DELTA 3 Classic
EcoFlow DELTA 3 Classic Review
1,024Wh of storage, 1,800W continuous output, LiFePO4 cells. Listed at $619 at EcoFlow.
The EcoFlow DELTA 3 Classic is a portable 600 1,200wh unit holding 1,024Wh. At $0.60 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 $619 against an $1,299 MSRP.
Manufacturer price at the time of writing. This link is not a paid placement.
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 Classic will run, and for how long
Runtimes below are calculated from the 1,024Wh 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 1,800W continuous rating is left off the list because this unit cannot carry it, though the 2,600W surge rating covers brief startup spikes from motors and compressors.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 78 charges |
| Wi-Fi router (10W) | 87 hr |
| LED work light (10W) | 94 hr |
| CPAP, humidifier off (40W) | 21 hr 46 min |
| Laptop (60W) | 14 hr 30 min |
| 12V portable fridge (45W avg) | 19 hr 21 min |
| 55-inch TV (90W) | 9 hr 40 min |
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
It accepts 1,400W from a wall outlet. Maximum solar input is 500W. At 70% of that rating, which is what a fixed panel realistically delivers across a good day, a full charge from empty is roughly 2 hr 56 min of usable sun. Switchover to battery is rated at 10ms, fast enough to keep a desktop or a router from dropping.
EcoFlow DELTA 3 Classic specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 1,024Wh |
| Continuous AC output | 1,800W |
| Surge / peak | 2,600W |
| Cell chemistry | LiFePO4 |
| Weight | 26.7 lb |
| Max solar input | 500W |
| Max AC input | 1,400W |
| UPS switchover | 10ms |
| Warranty | 3 years |
| Price at EcoFlow | $619 |
| Cost per watt-hour | $0.60 |
How the EcoFlow DELTA 3 Classic compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| EcoFlow DELTA 3 Classic | ALLPOWERS P1800 1024Wh | Anker SOLIX C1000 Gen 2 | |
|---|---|---|---|
| Capacity | 1,024Wh | 1,024Wh | 1,024Wh |
| Output | 1,800W | 1,800W | 2,000W |
| Cycle life | — | 3,000 cycles | 4,000 cycles |
| Weight | 27 lb | — | 25 lb |
| Price | $619 | $419 | $384 |
| Cost per watt-hour | $0.60 | $0.41 | $0.38 |
Where the EcoFlow DELTA 3 Classic sits in its band
We track 57 units in the portable 600 1,200wh band with both a price and a published capacity. They run from $179 to $3,449, and from 99Wh to 5,040Wh. On cost per watt-hour the EcoFlow DELTA 3 Classic ranks 26 of 57, where 1 is the cheapest capacity in the band. That is mid-table: neither the bargain of the band nor the unit you would call overpriced. 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 Classic
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- ALLPOWERS P1800 1024Wh review — 1,024Wh, 1,800W output, listed at $419, $0.41 per watt-hour, cheaper capacity than the EcoFlow DELTA 3 Classic.
- Anker SOLIX C1000 Gen 2 review — 1,024Wh, 2,000W output, listed at $384, $0.38 per watt-hour, cheaper capacity than the EcoFlow DELTA 3 Classic.
- Anker SOLIX 555 PowerHouse review — 1,024Wh, 1,000W output, listed at $899.99, $0.88 per watt-hour, dearer capacity than the EcoFlow DELTA 3 Classic.
- BLUETTI Elite 100 V2 review — 1,024Wh, 1,800W output, listed at $499, $0.49 per watt-hour, cheaper capacity than the EcoFlow DELTA 3 Classic.
Who the EcoFlow DELTA 3 Classic suits
It is a sensible buy for van and car camping, a long weekend off-grid, and covering a fridge plus lighting and devices through a day-long outage. It is the wrong tool for whole-home backup, and sustained use of a microwave or a kettle.
EcoFlow DELTA 3 Classic questions
How long will the EcoFlow DELTA 3 Classic run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 1,024Wh, derated to 85% for inverter losses, that is roughly 17 hr 24 min on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the EcoFlow DELTA 3 Classic be charged by solar?
Yes. It accepts up to 500W 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.
Does the EcoFlow DELTA 3 Classic 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 Classic carry?
EcoFlow covers it for 3 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 Classic worth it?
At $619 it works out at $0.60 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 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.
Compare this against the alternatives
Same figures, put side by side against the units people actually cross-shop it with.
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.