EcoFlow DELTA 3 Portable Power Station
SVT Score, Upper
1,024 Wh station that expands to 5 kWh; OutdoorGearLab drew 85 percent of rated capacity on AC.
$599
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Usability
6.9 out of 10It suits a buyer who wants 1 kWh now and room to add batteries, and who can live with three of the six AC outlets lacking a ground pin.
What we like
- 870 Wh drawn on AC by OutdoorGearLab85 percent of rated
- Full charge in 50 minutes in OutdoorGearLab's test
- Expands to 5 kWh with extra batteries
- 4,000 cycles to 80 percent
- UL 2743 listing by model in SGS's directory
What holds it back
- Three of six AC outlets ungrounded
- Solar input capped at 500 W
- 27.6 lb for 1 kWh
- No transfer switch sold for it
What you’re getting
- Capacity1,000-1,499 Wh
- AC Output1,500-1,999 W
- Output Voltage120 V only
- Battery ChemistryLiFePO4
- Rated Cycles4,000-5,999 cycles
- Safety ListingUL 2743 listed
- Solar Input300-599 W
- Backup Switchover10 ms or less
- Warranty5 Years
- Expandable To5-9.9 kWh
- Weight27.6 lb
At a glance
- Six 120 V outlets
- Two 100 W USB-C ports
- 126 W car port
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 3 is a 1,024 Wh LiFePO4 station rated 1,800 W continuous and 3,600 W surge from six 120 V outlets, with two 100 W USB-C ports, two USB-A ports and a 126 W car port. EcoFlow states a 56-minute full charge from the wall at up to 1,500 W, and it takes up to 500 W of solar through one input. EcoFlow rates the cells for 4,000 cycles to 80 percent capacity, states a switchover under 10 ms and sells extra batteries that take it to 5 kWh. It weighs 27.6 lb and measures 15.7 x 8.0 x 11.2 in.
