Photo from the manufacturer
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EcoFlow DELTA 3 is a lithium iron phosphate power station with an expansion port compatible not only with its own extra battery, but also with those of DELTA 2, DELTA 2 Max and DELTA Pro 3: anyone starting with the single unit can add capacity later without replacing it. In a blackout it steps in fast enough that a connected computer doesn't lose its work.
It charges from the mains outlet, the sun or the car's cigarette lighter socket, always through the same port on the back; the grid and the sun can stay connected together, with the sun taking priority and the grid filling in only when it isn't enough. The four AC outlets share a single power budget, enough to keep a fridge, a router and a few lights running together during an outage.
It's a convenient base for anyone who wants to start small and grow later, or for anyone looking for a discreet reserve to keep in a corner of the home. Anyone who needs to start several heavy loads together from day one needs more power on the outlets, not more capacity: here the four outputs share it.
official manufacturer list price — on nominal capacity
| Parameter | Value | Source |
|---|---|---|
| Dimensions | 20.2 × 39.8 × 28.4 cm (8.0 × 15.7 × 11.2 in) | manufacturer website |
| Weight | 12.5 kg (27.6 lb) | manufacturer website |
| Nominal capacity | 1.024 kWh | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Maximum expanded capacity | 5 kWh | Declared by the brand |
| Continuous output | 1800 W | Declared by the brand |
| Peak output | 3600 W | Declared by the brand |
| AC outlets | 4 | Declared by the brand |
| Fastest USB-C | 100 W | Declared by the brand |
| Maximum charge power | 1.5 kW | Declared by the brand |
| Maximum solar input | 500 W | Declared by the brand |
| Backup power | UPS | Declared by the brand |
| Switchover time | 10 ms | Declared by the brand |
| Rated cycles | 4000 cicli | Declared by the brand |
| Capacity at end of cycle life | 80 % | Declared by the brand |
| Warranty | 5 anni | Declared by the brand |
| Mounting | Portable | Declared by the brand |
| Noise level | 30 dB | Declared by the brand |
| Official list price | 899 € | Declared by the brand |
| Usable capacity | — | Not declared |
| Depth of discharge | — | Not declared |
| Cell supplier | — | Not declared |
| Peak duration | — | Not declared |
| 0–80% charge time | — | Not declared |
| Guaranteed throughput | — | Not declared |
| Guaranteed remaining capacity | — | Not declared |
| Round-trip efficiency | — | Not declared |
| Standby consumption | — | Not declared |
| Ingress protection | — | Not declared |
| Minimum temperature | — | Not declared |
| Maximum temperature | — | Not declared |
| Cell heating | — | Not declared |
| Wheels and handle | — | Not declared |
| Works without internet | — | Not declared |
| Local control | — | Not declared |
| Open protocols | — | Not declared |
| Home Assistant integration | — | Not declared |
| Where the data is hosted | — | Not declared |
| Remote updates | — | Not declared |
| App required for setup | — | Not declared |
| Declared standards | — | Not declared |
The rest of the data comes from 2 pages on the manufacturer's site, cited row by row in the table above.
A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.
These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.
Chosen by the declared use tier and footprint, not by price: we don't publish prices.
