EcoFlow DELTA Max Portable Power Station Review: Great for Off-Grid Use and Peace of Mind During Emergencies

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The Lowdown

The EcoFlow DELTA Max is a fantastic portable power station whether you’re using it for emergency power or off-grid living. I plan on using it for both purposes, and I look forward to continuing to discover what it can do. The hardware is well designed and amazingly nice, and the battery is super smart. I appreciate that there is no guessing how much battery is left or charging time is needed, as it is readily displayed.

Overall
5

Pros

  • Fast charging using multiple options
  • Plenty of outlets of various types
  • Ability to expand battery capacity
  • Excellent display screen
  • Enough power to run most of a travel trailer
  • Built-in handle

Cons

  • Due to its weight, some may not be easily able to move the EcoFlow DELTA Max around
EcoFlow DELTA Max Portable Power Station Review: Great for Off-Grid Use and Peace of Mind During Emergencies Listen to this article

Living in a region affected by hurricanes and the recent power outages during the snow last season in Texas, backup power is a genuine concern. We also have a travel trailer that we often use without any electric hookups. The EcoFlow DELTA Max is a portable power station offered in up to a 2016Wh capacity capable of powering most of our home appliances and electronics, at least for a time.

Whether you need off-grid power or will only use it during a power outage emergency, the EcoFlow DELTA Max provides reliable and safe portable power. The battery weighs 48 pounds, and it measures 19.6″ x 9.5″ x 12″. A handle is built into the battery’s body; while it’s somewhat heavy, the weight is a trade-off for a device that can provide this much power.

Stock image showing the side and front of the EcoFlow DELTA Max

The box includes the EcoFlow DELTA Max 1600 (1612Wh) or the DELTA Max 2000 (2016Wh ), an AC Charging Cable, a Car Charging Cable, Solar Charging Cable, and a DC5521 to DC5525 cable. The included user manual is well written and covers any information needed to run the device.

Including all of these cables is fantastic and keeps costs down as you expand the charging abilities of the battery; this thing comes ready to go!

Cables included with the EcoFlow DELTA Max.

The front of the EcoFlow DELTA Max includes the power button and display screen. The screen displays the current hours of battery life remaining. This number will change as power is being used.

The battery percentage is also displayed along with input and output watts. This panel is the control center for your battery, and it will help with decisions on what you can or cannot use and tell you when to recharge.

Front panel of the EcoFlow DELTA Max

There are also two USB-C ports, two USB-A ports, and two USB-A Fast Charge ports. There is also a small button that will assist in connecting the battery to the mobile app.

Front panel of the EcoFlow DELTA Max

The rear of the EcoFlow DELTA Max provides six 2400W (surge protected) AC outlets. To me, having this many outlets is amazingly useful. Below the outlets are a 12.6V Car Power port and two DC5521 12.6. ports. Each section of output ports contains a button to turn those ports on and off.

Ports on the back of the EcoFlow DELTA Max

At the top of the rear is a door that flips up; this is where the charging options are utilized. Charging time on the DELTA Max is up to 3 times faster than on similar batteries. Once charging begins, the amount of time until it’s fully charged will be shown on the screen.

While plugged into the wall, I could charge the EcoFlow DELTA Max from 30% fully, and it only took about an hour. I will soon post a review of the 400w solar panel and include numbers on speeds when charging from the sun. Make sure you check back for the next review.

Plugs available on the EcoFlow DELTA Max

The EcoFlow DELTA Max is expandable by connecting up to two satellite batteries, which provides mind-blowing power possibilities. This option would be perfect for off-grid living situations or long-term camping, and I hope to give two satellite batteries a try at some point.

Ports for extra battery connections

ThermoWorks Thermapen Mk4

The DELTA Max connects to the EcoFlow mobile app, providing the ability to customize power use as well as control the device remotely. The app is easy to connect to, and it gives a really cool view of what is happening with the battery.

Using the EcoFlow app in tandem with the EcoFlow DELTA Max

Now for some tests! Most plug-in devices, especially laptops, tablets, and phones, will barely put a dent in the battery power. My first big test was using a pellet grill. I smoked a brisket for 14 1/2 hours using only EcoFlow DELTA Max battery power.

Brisket in an electric smoker powered by the EcoFlow DELTA Max

Display on the EcoFlow DELTA Max

Our home is completely electric, so I have to cook outside during a prolonged power outage. The DELTA Max proved itself by powering my pellet smoker for a long cook. As the smoker started up, the battery display showed there were 18 hours of power available which should be more than enough.

Throughout the 14 1/2 hours the brisket was smoking, I checked the battery regularly and was blown away by its performance. Of course, the smoker is not a constant drain since it holds heat for a while and basically turns on and off. The smoker performed the same as if it was plugged into the wall.

Display on the EcoFlow DELTA Max

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As you can see, after the 14 1/2 hour smoke, not only did I have a fantastic pile of meat for the family, but I also had 72% battery left. I could theoretically smoke a few more briskets and still have no need to recharge the DELTA Max.

I told the family that the next time we lose power in a tropical system, we would smoke a brisket and have enough food to last us an entire week. And in case you were wondering, a full-size refrigerator will run for 14 hours with the EcoFlow DELTA Max, which could be a lifesaver!

Brisket cooked on a smoker powered by the EcoFlow DELTA Max

Another reason I was excited to review the EcoFlow Delta Max is that it will work with our travel trailer. We often dry camp with no connections on our ranch, and the constant noise and use of a gas generator can be annoying and labor-intensive.

Would the DELTA Max allow us to do some camping without the need for a big generator? What devices could we use? The following video gives some idea of what we can do using just the EcoFlow DELTA Max.

The next review will have me testing the EcoFlow DELTA Max with its 400w solar panel to see how long we can make it without the generator. Almost everything in the camper works, except for the air conditioner, at least for short use. Having a 50amp hook up, I was doubtful it could power it or at least for very long, but everything else works well. I am curious what adding the two satellite batteries can do for use in the camper.

The EcoFlow DELTA Max is a fantastic portable power station whether you’re using it for emergency power or off-grid living. I plan on using it for both purposes, and I look forward to continuing to discover what it can do. The hardware is well designed and amazingly nice, and the battery is super smart. I appreciate that there is no guessing how much battery is left or charging time is needed, as it is readily displayed.

I’m genuinely impressed that I was able to run an entire travel trailer with the EcoFlow DELTA Max, except for the air conditioner. This will be a game-changer in so many ways. Fast recharging with multiple methods makes this battery usable in almost any situation, and its recharging capabilities can be expanded with the 400W Solar Panel.

The EcoFlow DELTA Max retails for $2099 (currently on sale for $1,899); it is available directly from the manufacturer.

Source: Manufacturer supplied review sample

What I Like: Fast charging using multiple options; Plenty of outlets of various types; Ability to expand battery capacity; Excellent display screen; Enough power to run most of a travel trailer; Built-in handle

What Needs Improvement: Due to its weight, some may not be easily able to move the EcoFlow DELTA Max around

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About the Author

Travis Ehrlich
Travis is a high school teacher and coach in a small South Texas town. His love for gadgets began at a very early age, and he has been a cross between a jock and a geek for most of his life. He has two boys and a wonderful wife who lets him be a gadget freak. He is a Mac convert and has drank the whole pitcher of kool-aid! He is also an avid guitar player and loves the outdoors, especially hunting with both a bow and rifle.