REASONS TO BUY
Fast charge speed
Intuitive display
High surge rating
Expandable battery capacity
REASONS TO AVOID
Half the AC outlets are ungrounded
Slightly heavy for its size class
EcoFlow Delta 3 Review
A dialed power station with great power output and lightning fast charge speeds
Credit: Matt Lighthart
By Kenji Mowrey ⋅ Senior Review Editor ⋅ July 23, 2026
RELATED: The Best Power Stations of 2026
Our Verdict
The EcoFlow Delta 3 is a well-rounded power station highlighted by its fast charging, expandable battery capacity, and solid display. It has no glaring weaknesses, though it is slightly larger than comparable competitors in the 1,000 wh class, and it's a bit strange that EcoFlow left three of the AC outlets ungrounded. That said, this power station can reliably supply power for off-grid camping, emergency home backup, and remote work.
Our Analysis and Test Results
The Delta 3 works best for quick trips off-grid and around the house to supplement devices and appliances for short power outages. Credit: Matt Lighthart
Likes
The delta 3 was a star in our charge speed test. Taking just 50 minutes to complete a full charge with an average charge rate of 1,299 Wh/hr. This was even faster than EcoFlow's own advertised time of 56 minutes. This makes the Delta 3 a great option for last-minute recharges before heading off-grid or preparing for a power outage.
We always appreciate the interface on EcoFlow power stations, and the Delta 3 follows that trend. The large LED display is easy to read, and all power/charging information is readily available without having to toggle through a menu or app.
The Delta 3 is also expandable to 5,000 Wh, making it a great option for anyone who wants the flexibility to scale their power needs down the road.
Dislikes
Though the Delta 3 features 6 AC ports, just half are three-pronged, grounded ports. This can be a bit frustrating when utilizing multiple appliances at once. Thankfully, the three grounded ports are spaced nicely, so you shouldn't run into any issues with larger plugs or adapters.
The port layout on the Delta 3 isn't our favorite, but the three ungrounded ports can still be used for smaller items like fans and lamps. Credit: Matt Lighthart
It's also slightly heavier and larger than competitors in the 1,000 Wh class. The long, narrow shape doesn't always bode well in storage spaces, and it weighs 28.2 lbs, just heavy enough that it can become a nuisance to lug into a campsite or carry across the house.
Should You Buy the EcoFlow Delta 3?
The EcoFlow Delta 3 is a fantastic power station that excels in supplying off-grid power. It charges quickly, has impressive power output for its size, and can be expanded for more battery capacity. It does feel a tad heavy for off-grid camping and travel, but it's not a deal breaker and may not matter given all the positives of this power station.
The Delta 3 has enough capacity to keep a refrigerator running overnight. Credit: Matt Lighthart
What Other Power Stations Should You Consider?
Light and easy to carry, the Anker Solix C1000 Gen 2 is our favorite 1,000 Wh power station for short camping trips and occasional home backup power. We are also big fans of the Jackery 2000 v2. While it weighs 38.9 lbs, it's far and away our favorite power station for extended off-grid camping setups, thanks to its 2,042 Wh battery and 2,000 watts of power.
Side-by-Side Comparison
Compare EcoFlow Delta 3 versus top competing products:
| Awards | |
|---|---|
| Price | $699 List Check Amazon (on sale!) |
Overall Score  |
|
| Star Rating | |
| Bottom Line | A dialed power station with great power output and lightning fast charge speeds |
| Pros | Fast charge speed, intuitive display, high surge rating, expandable battery capacity |
| Cons | Half the AC outlets are ungrounded, slightly heavy for its size class |
| Rating Categories | EcoFlow Delta 3 |
| Power Output (60%) | |
| Portability (25%) | |
| Charging Speed (10%) | |
| Features (5%) | |
| Specifications | EcoFlow Delta 3 |
| Measured Power Output | 870 Wh |
| Max AC Watts | 1,800 watts |
| Max AC Amps | 15 amps |
| Measured Weight | 28.1 lbs |
| Power Outlets | (6) AC (2) USB-A (2) USB-C (1) Car Outlet (12V) |
| Claimed Capacity | 1,024 Wh |
| Usable Capacity | 85% |
| Dimensions | 15.7L x 8.0W x 11.2H in |
| Max AC Surge Wattage | 3,600 watts |
| Time to Charge | 0.9 hr |
| Measured Charging Speed | 1,229 Wh/hr |
| Solar Compatible | Yes |
| Max Solar Panel Watts | 500 watts |
| Battery Chemistry | LiFePO4 |
| Claimed Cycle Life | 4,000 cycles |
| AC Output Power (Bypass Mode) | Yes |
| App | Yes |
| Expandable Battery Capacity | Yes 1-5kWh |
| Uninteruptible Power Supply (UPS) | Yes |
| Emergency Power Supply (EPS) | Yes |
| Built in Light | No |
| Warranty | 5 years |
—Kenji Mowrey
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