For homeowners who want a 240V-capable backup battery that grows with expansion packs, not a grab-and-go unit.
Amazon $1,498.98 BLUETTI $1,499
A proven 2kWh LiFePO4 station for home backup and RV trips with plenty of outlets. It costs less than the DELTA 3 Max Plus but has slower switchover and less output.
- 2,048 WhCapacity
- 2,400 WAC output
- 50 lbWeight
- LiFePO4Battery
- $0.51Price / Wh
Price checked October 20, 2026. As an Amazon Associate we earn from qualifying purchases.
- Delivered about 1.8 kWh at a household-style 350W load in independent testing
- Six AC outlets plus 12V car and barrel outputs cover a campsite or a home office
- Two 500W solar inputs refill it in a few sunny hours
- Expandable to about 6 kWh with extra batteries
- About 50 lb, heavy to carry far
- 30 ms switchover is slow for desktop PCs; fine for fridges and lights
- USB-C tops out at 100W
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.
Independent capacity tests
Usable energy delivered from a full charge through the AC outlets, as measured by independent reviewers. Inverter losses mean no station delivers its full rated capacity.
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| StorageReview | 1,800 Wh | 88% | AC discharge at a 350W load. Recharge took 2,370 Wh from the wall. |
Specifications
| Battery | |
|---|---|
| Rated capacity | 2,048 Wh |
| Tested usable capacity | 1,800 Wh (88%) |
| Chemistry | LiFePO4 |
| Cycle life | 3,000 to 80% |
| Expandable | Yes, up to 6,144 Wh |
| Output | |
| AC output | 2,400 W (4,800 W surge) |
| Boost mode (resistive loads) | 3,400 W |
| AC outlets | 6 total |
| 120V 20A outlets (NEMA 5-20R) | 6 |
| USB-C ports | 2 (up to 100 W each) |
| USB-A ports | 4 |
| 12 V car outlet | Yes |
| DC5521 ports | 2 |
| UPS / pass-through | Yes (30 ms switchover) |
| Charging | |
| AC charging | 1,800 W |
| Max solar input | 1,000 W |
| Solar input voltage | 11-60V, 15A (2 inputs, 500W each) |
| Build | |
| Weight | 50 lb (23 kg) |
| Dimensions | 19.6 x 9.5 x 12 in |
| App | EcoFlow app (Wi-Fi and Bluetooth) |
| Warranty | 5 years |
Alternatives in this size
For RV owners and home-backup buyers who want 2 kWh, a TT-30 outlet and a UPS at a low price per watt-hour, and don’t need to expand it later.
Amazon $849.98 Renogy $799For home-backup buyers who want 2.3 kWh now and a path to a large parallel system later. It is heavy, so it suits staying in one place rather than frequent carrying.
Amazon $1,599 Dabbsson $899Compare
Compare the EcoFlow DELTA 2 Max with any other portable power station →
More from EcoFlow: every EcoFlow product ranked.