EcoFlow DELTA 2 Portable Power Station Review
A 1,024 Wh LiFePO4 power station with 1,800 W of AC output that can grow to about 3 kWh with an extra battery.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance and reviewed by our editor before publication.
Our verdict
The DELTA 2 is still a capable 1 kWh station, and the option to add a battery later is its best feature. Buy it for that; if you want the longest-lasting cells in this size, look at newer models first.
Pros and cons
Pros
- Charges from a wall outlet to 80% in 50 minutes, by EcoFlow's figures
- Capacity can roughly triple with one extra battery
- LiFePO4 cells rated for 3,000+ cycles, backed by a 5-year warranty
- X-Boost mode lets it run some appliances rated up to 2,200 W at reduced power
Cons
- An older design: EcoFlow now sells the DELTA 3, which it rates for 4,000 cycles and a faster recharge
- Solar input tops out at 500 W, below the 600 W the Anker SOLIX C1000 accepts
- EcoFlow describes the backup switchover only as "almost instant" and gives no figure in milliseconds
Specifications
| Capacity | 1,024 Wh |
|---|---|
| Battery chemistry | LiFePO4 (LFP) |
| Rated cycle life | 3,000+ cycles to 80% capacity |
| AC output | 1,800 W |
| Peak output | 2,700 W surge |
| Wall recharge | 0-80% in 50 minutes, full in 80 minutes (EcoFlow lab figures) |
| Max solar input | 500 W |
| Expandable to | About 3 kWh with a DELTA 2 or DELTA 2 Max extra battery |
| Weight | 27 lb (12 kg) |
| Dimensions | 15.7 x 8.3 x 11 in |
| Warranty | 5 years |
The full review
Who it suits
Campers, RV owners and households that want about 1 kWh today and the option to add capacity later. The 1,800 W output covers a full-size refrigerator, a microwave or most power tools, one at a time.
Who should skip it
Anyone who needs a published switchover time for a desktop computer or network gear: EcoFlow does not give one for this model. If you plan to charge mostly from solar, a model with a higher solar input will refill faster.
What we could not confirm
EcoFlow's regional pages list different numbers of AC outlets, so we have left the outlet count out of the table. Check the listing for the US version before you buy.
Frequently asked questions
- Can the EcoFlow DELTA 2 be expanded?
- Yes. EcoFlow sells it as a 1-3 kWh system: adding one DELTA 2 or DELTA 2 Max extra battery raises the total to roughly 2 or 3 kWh.
- How fast does the DELTA 2 recharge?
- EcoFlow states 0-80% in 50 minutes and a full charge in 80 minutes from a wall outlet, measured under lab conditions. Solar charging takes 3 to 6 hours at up to 500 W of input.
- How long is the warranty on the DELTA 2?
- EcoFlow lists a 5-year warranty for the DELTA 2.
Ready to buy the EcoFlow DELTA 2 Portable Power Station?
Prices change often. See the current price and availability on Amazon.