REASONS TO BUY
Large inverter
Fast charge times
High expansion capabilities
REASONS TO AVOID
Very heavy
Unconventional shape
EcoFlow Delta Pro Review
This highly capable power station is aimed at those with serious power needs
Credit: Natalie Kafader
By Kenji Mowrey ⋅ Review Editor ⋅ May 18, 2025
Contributions From: Sentry Kelly
RELATED: The Best Power Stations of 2025
Our Verdict
Loaded with features and unrivaled power capabilities, the EcoFlow Delta Pro is one of the most impressive power stations we've ever tested. Along with our favorite display and app, this power station also had one of the quickest charging speeds during our tests. Due to its large, heavy size, the Delta Pro is suited best in semi-permanent locations, but if you're looking for ultimate power and battery capacity, this unit is about as good as it gets. To see how it compares to the rest of our lineup, take a look at our full power station review.
Editor's Note: Since our test period, this model has been updated with additional capabilities. Details are below.
Compare to Similar Products
 This Product
EcoFlow Delta Pro | |||||
|---|---|---|---|---|---|
| Awards |  A Large and Powerful Option |  Best Large Portable Power Station | Best Mid Sized Portable Power Station | Best Compact Portable Power Station |  Best Bang for the Buck |
| Price | $3,699 List $2,799 at Amazon | $1,822 at Amazon Compare at 2 sellers | $999 List $549.00 at Amazon | $279 List $178.00 at Amazon | $200 List $169.99 at Amazon |
Overall Score  |
|||||
| Star Rating | |||||
| Bottom Line | This large, feature-rich power station won't let you down when powering up appliances and tools | A large but thoughtfully designed power station, ideal for the most demanding tools and appliances | A mid-sized portable power station that combines a travel-friendly design with high power output | Small and portable, this power station is the perfect companion for off-grid charging | A solid pricepoint and a dialed LED display highlight this small portable power station |
| Rating Categories | EcoFlow Delta Pro | Jackery Explorer 20... | Anker Solix C1000 | Jackery Explorer 300 | Anker 521 |
| Power Efficiency (35%) | |||||
| Charge Speed (30%) | |||||
| Mobility (20%) | |||||
| Ease of Use (15%) | |||||
| Specifications | EcoFlow Delta Pro | Jackery Explorer 20... | Anker Solix C1000 | Jackery Explorer 300 | Anker 521 |
| Watt Hours | 3,600.0 wh | 2,042.8 wh | 1,056.0 wh | 293.0 wh | 256.0 wh |
| Max AC Output | 3,600 watts | 3,000 watts | 1,800 watts | 300 watts | 200 watts |
| AC Surge Capacity | 7,200 watts | 6,000 watts | 2,400 watts | 500 watts | n/a |
| Solar Charge Input | 1,600 watts 11-150V, 15A |
1400 watts 17.5-60V, 12A Double to 24V |
600 watts 11-32V, 10A 32V-60V, 12.5A |
100 watts | 65watts 11-28V, 5.5A |
| Measured Weight | 97.5 lb | 62.3 lb | 28.7 lb | 7.1 lb | 8.4 lb |
| AC Output Power (Bypass Mode) | 3,600 watts | 1,440 watts | 1,440 watts | No | No |
| Claimed Lifecycles | 3,500 | 4,000 | 3,000 | 800 | 3,000 |
| DC Input Capacity | 1,600 watts | 1,400 watts | 600 watts | 90 watts | 125 watts |
| Fast Charging Mode | No | No | Yes, 1300 watts | No | Yes |
| Wireless Charging | No | No | No | No | No |
| Charge Management | Not Specified | "Charge Shield" | Not Specified | Not Specified | Not Specified |
| App | Yes | Yes | Yes | No | No |
| Expansion Compatible | Yes | Yes | Yes | No | No |
| Uninteruptible Power Supply (UPS) | No | No | Yes | No | No |
| Emergency Power Supply (EPS) | Yes | Yes | Yes | No | No |
| Built in Light | No | No | Yes | No | Yes |
| Dimensions | L: 25" W: 11.2" H: 16.4" |
L: 14.7" W: 18.6" H: 14.1" |
L: 14.8" W: 8.1" H: 10.5" |
L: 9.1" W: 5.2" H: 7.8" |
L: 8.5" W: 5.7" H: 8.3" |
| Warranty | 5 year | 2 year | 5 year | 2 year | 5 year |
Our Analysis and Test Results
Product Updated — May 2025
Since testing this version of the Delta, EcoFlow has upgraded to the Delta Pro 3. The newer iteration has a maximum output of 4000W, even while charging, and is now outfitted with a 240V plug.
Since testing this version of the Delta, EcoFlow has upgraded to the Delta Pro 3. The newer iteration has a maximum output of 4000W, even while charging, and is now outfitted with a 240V plug.
Designed to take on the biggest appliances and tools, the EcoFlow Delta Pro's large power and battery capacity are equally impressive as its quick charge times and dialed display.
The power capabilities of the Delta Pro are hard to beat.
Credit: Natalie Kafader
Power Efficiency
Using our light bar tool, we ran the Delta Pro at its rating of 3,600 watts and drained its battery to 0%. Running for 49 minutes before running out of battery, our results showed that this model had a usable capacity score of 82%. Given its impressive design and higher price tag, we would have liked to see a higher score for this unit.
Next, we used our light bar tool to run the Delta Pro at its maximum inverter rating and measured its run time. With a maximum AC inverter output of 3600 watts, it ran for 51 minutes before fully draining to 0%. With one of the best scores out of the entire test group, the Delta Pro fared much better in this test, proving its efficiency when running at its maximum load.
The Delta Pro is also packed with AC and DC port options, including a 30A output port, barrel plugs, and an Anderson port. Adding to its impressive laundry list of features and different power capabilities.
The Delta Pro was our first choice when using power tools and large appliances.
Credit: Kenji Mowrey
Charge Time
To find charge times, each unit was timed while charging using AC input from 0% to 100%. Additionally, to account for the large variance in battery sizes between different power stations, we found the rate of charge for each unit and factored that into our scoring process. This is why you may see a unit with a faster recharge time but a slightly lower score than a competitor.
The Delta Pro was a standout in our charge time test. With a charge time of 153 minutes and AC input upwards of 1800 watts, this power station was incredibly impressive, given its large battery and overall capacity. The various ways to charge the Delta Pro also stood out. Aside from AC, DC, and solar charging, the Delta Pro can also be charged with a separate EV plug adapter at level 2 charging stations. It also has the option to be charged with a separate 800-watt alternator charger in your car. While these accessories aren't included, the innovative ways to charge this power station add to its impressive list of features.
The Delta Pro has an abundance of different port options and charge settings.
Credit: Kenji Mowrey
Mobility
If mobility is what you are after, the EcoFlow Delta Pro would be low on our list of recommendations. While it was hard to find any other major critiques of this model, the weight and size of this power station are no joke. At 97.24 pounds, this beast of a power station should be used in semi-permanent locations, whether traveling or not.
It does have a telescoping handle and wheels, but is best reserved for rolling on even flat surfaces. The built-in handles are sturdy and work well when lifting this station with two sets of hands, but it would be a tough task to lift individually. The shape of the Delta Pro is also unique. A skinnier but longer design, the Delta Pro's dimensions of 25"L x 11"W x 16.5"H can make it tricky to fit into certain spaces, such as in a van build or the closet of your home.
The telescoping handle and wheels are a necessity on this beast of a power station.
Credit: Natalie Kafader
Ease of Use
Our Ease of Use metric looks at each power station's included features, along with interacting and scoring each model's interface and display.
With the EcoFlow Delta Pro, there are very few features this unit doesn't have. EcoFlow possesses one of the best apps we've used, with every essential setting between charge and power settings, and it even tracks historical data for you. Its modular design also has the ability to expand up to 25,000 Wh by adding additional batteries and two more Delta Pro power stations. That much capacity could easily power a small home during an outage over 24 hours. One ding on the Delta Pro is that it only serves as an emergency power supply since its cutover time of 30ms or less isn't quite fast enough to be considered an uninterrupted power supply.
If expandability and features are what you're after, the Delta Pro won't disappoint.
Credit: Kenji Mowrey
Should You Buy the EcoFlow Delta Pro?
If you're looking to enter the world of portable power stations and need to charge devices or use smaller appliances, a more portable and budget-friendly option will serve you best. But for anyone who wants the ultimate power station to run large appliances and tools with enough expansion capabilities to power your whole home, the EcoFlow Delta Pro is our top choice.
The EcoFlow Delta Pro is the ultimate power station for demanding power needs.
Credit: Natalie Kafader
What Other Portable Power Stations Should You Consider?
If you are looking to start out with a small form power station to supplement your devices, the Jackery 300 and Anker 521 both performed well in our tests, but won't cost you an arm and a leg. The Bluetti AC200 Max was another unit with impressive power output and a friendly price tag capable of powering up larger tools and devices. We were also highly impressed with the Anker Solix C1000 if you're in need of a travel-friendly power station to take along during road trips, boondocking, or to stash in the back of your camper.
—Kenji Mowrey and Sentry Kelly
You Might Also Like
