EcoFlow DELTA 3 Ultra
#23 in Home backupFull review
A wheeled 3kWh station for home backup or RV use at a lower price than its expandable sibling. Buy it if 3kWh is enough and you charge mostly from the wall.
Amazon $1,349 EcoFlow $1,349$1,349
3.6/5
For home-backup buyers who want nearly 4 kWh in one rolling unit without adding expansion batteries.
- 3,840 WhCapacity
- 2,600 WAC output
- 86 lbWeight
- LiFePO4Battery
- 2 h 30 minFull charge
- $0.36Price / Wh
Check price at Amazon$1,449Check price at BLUETTI$1,399
Price checked October 20, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 3.84 kWh runs a full-size fridge for well over a day
- Wheels and a trolley handle make an 86 lb unit movable by one person
- 2600W output handles most kitchen appliances and power tools
Cons
- About 86 lb, so stairs and car trunks are hard work
- Only four AC outlets for a unit this large
- 15 ms UPS switchover may be too slow for some desktop PCs
How it scores
The rating comes from 8 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Battery | |
|---|---|
| Rated capacity | 3,840 Wh |
| Chemistry | LiFePO4 |
| Expandable | No |
| Output | |
| AC output | 2,600 W (5,200 W surge) |
| Boost mode (resistive loads) | 3,900 W |
| AC outlets | 4 total |
| 120V 20A outlets (NEMA 5-20R) | 4 |
| USB-C ports | 2 (up to 100 W each) |
| USB-A ports | 2 |
| 12 V car outlet | Yes |
| UPS / pass-through | Yes (15 ms switchover) |
| Charging | |
| AC charging | 1,800 W |
| Full AC charge time | 2 h 30 min (0-80% in about 1 h 55 min in Turbo mode; AC + solar up to 2800W) |
| Max solar input | 1,000 W |
| Solar input voltage | 12-60V, 20A |
| Build | |
| Weight | 86 lb (39 kg) |
| Dimensions | 16.8 x 11.3 x 19.3 in |
| App | Wi-Fi + Bluetooth |
| Warranty | 5 years |
Alternatives in this size
ALLPOWERS R4000
#24 in Home backupFull review
A wheeled 3.5 kWh LiFePO4 station for RVs, food trucks and home backup at a lower price than the big brands. It is 120V only.
ALLPOWERS $1,899$1,899
Anker SOLIX F3800 Plus
#26 in Home backupFull review
For homeowners planning a solar-backed, expandable 240V backup system rather than a portable unit.
Anker $2,599.99$2,599.99
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Reviews
- CleanTechnica: BLUETTI Elite 400
- TechRadar: BLUETTI Elite 400 review
- Fstoppers: BLUETTI Elite 400 review