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Customer reviews for 3400-Watt EcoFlow DELTA 2 Max Portable Power Station With X Boost Technology + 2 pcs 110W Solar Panel for
3400-Watt EcoFlow DELTA 2 Max Portable Power Station With X Boost Technology + 2 pcs 110W Solar Panel
4.8 out of 5 stars
stars181 ratings180 reviews
  1. 5 stars85% (154)
  2. 4 stars12% (22)
  3. 3 stars1% (1)
  4. 2 stars0% (0)
  5. 1 star2% (4)

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Showing 91-100 of 180 reviews
Jul 19, 2023
BruceB
5 out of 5 stars review

Just what I wanted

I had been researching portable power systems for some time. My specific use case was for extended off-grid camping, with the ability to charge from solar or AC (when available) I also wanted to be able to use it in a limited home-backup role for powering critical items (refrigerator, freezer, etc) during power outages at home. The Delta 2 Max ticked all the boxes. With the ability to expand up to 6KWH storage with the extra battery packs, it could serve this secondary role very well. Thus far, very please with the purchase, and support from a very active user community. Two thumbs up!

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 25, 2023
Easy E
5 out of 5 stars review

Power Outage Boredom Savior!

The EcoFlow Delta 2 Max is an amazing battery bank that packs a lot of power. I purchased it to run my EcoFlow Wave 2 for for off grid camping, and put it to its first test powering Mario Kart during an unexpected power outage. The battery lasts for a long time before needing to be recharged, making it perfect for camping trips or other outdoor adventures. The EcoFlow Delta 2 Max is definitely a great investment for anyone who needs a reliable battery bank.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 20, 2023
HoustonMarcP
5 out of 5 stars review

Instead of a natural gas monster, go DELTA 2 Max!

I was looking for a way to keep a few key appliances powered in case of a limited power outage (which happens in Houston TX WAY too often!!). This is the perfect solution. I added the 2x solar panels and have charged the power station completely with the sun. I also love the app and connectivity that makes managing the station a breeze. A great solution!

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 19, 2023
Zellersr
5 out of 5 stars review

Ecoflow Delta 2 Max - Great Performance

The EcoFlow Delta 2 Max has the perfect capacity, along with the ability to add additional battery storage, for my home needs during emergencies. I want the essentials to be power backed up for my house in these times. With the flexibility to add additional batteries as needed, as well as integrate into the ever growing EcoFlow ecosystem of products, made it a great choice for the needs of my family.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 19, 2023
JACINTO
5 out of 5 stars review

EcoFlow DELTA 2 Max Portable Power Station

This Delta 2 Max is all you need for all those road trips or at home for any electrical emergency. I am really impressed with this product, but you will say that it is very expensive, and yes it is expensive but when you have it you will say that it is worth it because it is very efficient and durable that it comes with a 5-year warranty, just enough to get more for your money, thanks

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 19, 2023
Ecoflowuser
4 out of 5 stars review

Pretty good product for on peak power shifting

I got this to help shift my on peak power usage during expensive summer pricing. I have my refrigerator, router, tv, surround sound system, and a few lights plugged into this 24/7 and it powers them no problem. The fans are relatively quiet and the app makes it nice to check info about the unit. My biggest complaint would be solar charging.expect about 50-75 watts to be wasted in ac-dc conversion so if you get 200w solar you are actually only charging about 125-150. Other than that it’s a great unit and charges fast via AC wall outlet. Haven’t taken it camping but it can also be used anywhere since it’s only about 50lbs

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 21, 2023
Queen Bee
5 out of 5 stars review

Off Grid Power!!!

This has been an awesome power station for our off grid camper and work needs. We have used it for our 12v fridge, lights, computers, tools, smoker and microwave. It powered our 12v fridge for over 36 hours and still had 15% power remaining. I definitely would and have already recommended this to others.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 19, 2023
BigPappaPump
5 out of 5 stars review

A must have for Campers and Preppers

I am a big proponent of EcoFlow products. Last year I purchased twp Delta Pros, a spare battery for them, the smart panel and smart hub. I planned on taking one of the Pros with me while camping, but instead of lugging over a 100 pond unit all over the place, I saw that EcoFlow now produces all the power I need and the unit weighs half of the Delta Pro so I purchased one: the Delta 2 Max. I have a teardrop camper and I need to power a 5000BTU air conditioner, a 12V fridge/freezer a fantastic fan, etc. With the option of using solar panels or charging from shore power, the Delta 2 Max can be recharged in no time. This is a must have for campers and preppers alike.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Jul 25, 2023
ECOMouse
5 out of 5 stars review

Delta 2 Max -- A Great Choice!

Purchased the Delta 2 MAX when it was released, and happy that I did. It has been a great device with the ability to power most all of my needs. My only gripe is, when charging the time to full capacity reads incorrectly. I have to unplug the solar panels, shut the unit off, then turn it back on, and then replug them in for it to read accurately.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
Apr 9, 2025
midnight_tundra_a10
5 out of 5 stars review

Delta 2 + 800w Alternator Charger

I purchased this combination about a year ago and feel like I need to write a review after using these products. Prior to upgrading to this setup; I ran two Jackery (250w and 1000w) units for my power needs while camping. Switching to the Delta 2 setup minimized the amount of equipment I needed. It also provided plenty of power to run my fridge and charge any other electronics I needed charging. However, this is not the reason that prompted a review. The Delta 2 with the 800w Alternator Charger earned its worth when it got me out of an otherwise expensive situation. I was about an hour away from home running trails when I happen to damage my alternator. Because of this; I was slowly draining my battery and feared I’d have to pay for a costly tow. I had happened to leave my Delta 2 in the truck that weekend and it came in clutch. It was fully charged due to it being hooked up to the Alternator Charger. I was able to reverse the charge and run the truck off the Delta 2 for an hour until I made it home. I charged the Delta 2 every night to be able to drive to work and back until I was able to get the alternator replaced. Needless to say, the Delta + 800w Alternator Charger earned its worth. I highly recommend this setup to the point that I don’t need to run a dual battery setup since I have this to rely on. If you ask me, this combination is worth the money if you spend any time off grid or off the beaten path.

Review from ecoflow
Helpful?57N1YK4LERJM13661605668
reply from Ecoflowcustomersupport

Thankyou so much for your kind words! We're thrilled to hear you're enjoying EcoFlow Products. Your feedback motivates us to keep creating sustainable solutions. Stay powered up!