EcoFlow DELTA 2 Max Portable Power Station
SVT Score, Upper
2,048 Wh station that grows to 6 kWh; CNET drew 90 percent of rated capacity on AC.
$1,029
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Usability
5.8 out of 10It stores 2,048 Wh, the typical size for a large station, so it scores 5 on capacity; CNET drew 1,847 Wh of it on AC, 90 percent of rated.
Better on capacityEcoFlow DELTA ProStores 3,600 Wh. $1,899Scores 10.0Its inverter is rated 2,400 W continuous and 4,800 W surge, so it scores 5 on power output.
Better on power outputEcoFlow DELTA ProInverter is rated 3,600 W continuous. $1,899Scores 10.0A full wall charge takes about 80 minutes and two inputs take 1,000 W of solar, so it scores 8 on recharging.
EcoFlow rates the cells for 3,000 cycles to 80 percent capacity, so it scores 6 on battery life.
It passes power through and takes EcoFlow's extra batteries up to 6 kWh, but EcoFlow states no switchover time and sells no transfer switch for it, so it scores 4 on backup readiness.
Better on backup readinessEcoFlow DELTA ProSwitches to battery within 30 ms. $1,899Scores 7.0SGS lists it to UL 2743 by model, so it scores 6 on verification.
EcoFlow's policy gives it 5 years, so it scores 8 on warranty and support.
Its warranty runs 5 years on most stations, or 3 years plus 2 on registration, with returns within 30 days.
$1,029 at us.ecoflow.com.
The older 2 kWh model, still expandable to 6 kWh
The DELTA 2 Max is EcoFlow's 2023 2 kWh LiFePO4 station, a 50 lb box with six 120 V outlets.
It suits a buyer who wants 2 kWh that can triple with extra batteries and does not need a computer-grade switchover.
What we like
- 1,847 Wh drawn on AC by CNET90 percent of rated
- Expands to 6,144 Wh with extra batteries
- 1,000 W of solar over two inputs
- Six 120 V outlets
- 5-year warranty on EcoFlow's policy page
What holds it back
- No switchover time stated by EcoFlow
- 50 lb
- Surge weaker than claimed in TheSolarLab's test
- $130 more than the DELTA 3 Max
What you’re getting
- Capacity2,000-2,999 Wh
- AC Output2,000-2,999 W
- Output Voltage120 V only
- Battery ChemistryLiFePO4
- Rated Cycles3,000-3,999 cycles
- Safety ListingUL 2743 listed
- Solar Input1,000-1,999 W
- Backup SwitchoverPass-through, time not published
- Warranty5 Years
- Expandable To5-9.9 kWh
- Weight50.0 lb
At a glance
- 126 W car port
- Two 100 W USB-C ports
- Four USB-A ports
EcoFlow Technology, Inc. is EcoFlow's US company and is owned by Shenzhen EcoFlow Innovation Technology, a private firm founded in 2017.
It sells direct from us.ecoflow.com and through Amazon US, Costco, Home Depot, Lowe's and marketplace stores at Best Buy and Walmart.
The EcoFlow DELTA 2 Max is a 2,048 Wh LiFePO4 station rated 2,400 W continuous and 4,800 W surge from six 120 V outlets, with two 100 W USB-C ports, four USB-A ports and a 126 W car port. Its manual states a full charge in about 80 minutes from the wall at up to 1,800 W, and it takes up to 1,000 W of solar through two 500 W inputs. EcoFlow rates the cells for 3,000 cycles to 80 percent capacity and sells extra batteries that take it to 6,144 Wh. It weighs 50 lb and measures 19.6 x 9.5 x 12 in.
