EcoFlow Delta Max - The Ultimate Review + Pros and Cons -
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EcoFlow Delta Max - The Ultimate Review + Pros and Cons

EcoFlow Delta Max

The new EcoFlow Delta Max is a capable, portable power station. In fact, EcoFlow boasts you can easily take it with you when camping. 

This tiny yet powerful power station is a favorite among campers. It provides a reliable source of power no matter where your outdoor adventures take you.

Today, we’ll be unpacking the EcoFlow Delta Max. We’ll find out whether it’s genuinely as capable as EcoFlow would have us believe.

ecoflow delta pro max

EcoFlow Delta Max (Our Review)

If you’ve been following our blog, you know here at Shop Solar Kits, we love EcoFlow products. Their DIY solar panel kits and solar generators are reliable, efficient, and often look stylish too. 

So, it comes as no surprise that the EcoFlow Delta Max ticks all of our boxes. 

It’s a small power box, only around 19.6 x 9.25 x 12 inches, which is the same size as the EcoFlow Delta Pro. Yet, it can effortlessly power big appliances, power tools, and most of your modern camping equipment.

Since it’s so tiny, it also weighs only 47.6 lbs. This convenient weight makes it an excellent choice as a portable power supply.

Power Output

The EcoFlow Delta Max comes with X-Boost Technology. X-Boost Technology enables this tiny power station to power devices up to 3,400W, making it a powerful alternative to the EcoFlow Delta 1300.

We find that 3,400W is more than enough to power around 99% of appliances. This capability makes it an ideal backup solution should there be a power outage or natural disaster.

Connecting a variety of appliances to the Delta Max is pretty straightforward. There are 6 AC outlets, more than enough to keep multiple devices running during an emergency.

The 6 outlets are also pure sine wave outlets. The pure sine wave is significant because, unlike other electricity types, it won’t damage your sensitive equipment. 

For instance, devices such as CPAP machines are sensitive, and manufacturers often recommend using only pure sine wave power to run these devices. 

We also find that most phones, cameras, and other outdoor gear can be powered and charged up via a range of easily accessible USB ports.

The Delta Max boasts 2x ASB-A ports and 2x USB-A Fast Charge ports. The fast charge ports are perfect for quickly getting your critical electronics charged up and ready to go.

There’s also a single car power output and 2x DC5521 ports, which you can use to power various DC appliances. 

With this variety of outlets and ports, it is no surprise that this power station is a favorite among outdoor enthusiasts who want to keep a few items charged at camp.

The Delta Max doesn’t only offer excellent power output. It’s pretty easy to charge it back up too.

Charging Capability

How do you charge an EcoFlow Delta? It’s easy.

In true EcoFlow pedigree, the Delta Max comes with lightning-fast charging speeds. In fact, EcoFlow boasts that the Delta Max can charge up to 80%, from 0% in only 65 minutes!

The EcoFlow Delta Max requires only around 1.8 hours to charge fully. This incredible charging speed is roughly twice as fast as competing products.

ecoflow delta max power station

The secret behind this fast charging speed is EcoFlow’s X-Stream charging technology. This technology isn’t just fast. It’s perfectly safe too.

A built-in battery management system ensures that the batteries charge safely, avoiding any nasty overloads that can potentially damage your equipment. 

It also works to ensure the battery’s longevity when you decide to charge the Delta Max via a standard AC wall outlet. 

The software will protect your batteries and help you get the best possible lifespan out of them.

You don’t have to charge the Delta Max up via an AC outlet. All EcoFlow products are relatively compatible with one another. 

So, you could easily add several EcoFlow Delta compatible portable solar panels to create a genuinely off-the-grid power solution. The manufacturer, EcoFlow, says that their MPPT algorithm will continuously optimize solar charging.

This MPPT algorithm will constantly take readings of voltage and current in real-time. It uses these readings to adjust solar charging for the most efficient charging sequence.

If you want to lower the charging times or extend the power output, the Delta Max has a pleasant surprise in store for you.

Compatibility And Expandability

As a stand-alone unit, fresh out of the box, the EcoFlow Delta Max has around 2,016Wh capacity. 

This capacity is enough to power about 4x lights, an internet router, a fan, a laptop, a standard fridge, and even charge several smartphones for 12 hours.

If you want to extend this capacity, you can effortlessly connect two Delta Max Smart Extra batteries. With these batteries, you can expand the capacity to around 6, 048Wh.

When you expand the capacity like this, you can power all of those devices, not 12 hours, but rather 36 hours before needing to recharge again.

The vast number of other EcoFlow products and some third-party products compatible with the Delta Max makes it quick and easy to build a truly impressive eco-friendly power supply.

Since everything is modular, you can slowly build up your power system as your ambition and budget allow. 

This expandability and compatibility make the EcoFlow Delta Max power station an excellent value for money product.

Want to know more about how things stack up between the EcoFlow Delta 1300 vs the Jackery 1000? Check out our articles.


EcoFlow included a purpose-designed smart app to help you manage your Delta Max power station. 

As long as your power station has a WiFi connection, you can use the smart app to monitor and control power usage easily.

This innovative app is handy if you plan on using the Delta Max to provide power to a remote station or equipment. 

For example, in an emergency, you can use the app to adjust the battery level that dictates when the EcoFlow Smart generator should turn on. 

ecoflow delta max solar

You can also use the smart app to quickly turn on the Delta when it’s in standby mode.

You’ll always be on top of things and can quickly and remotely adjust your power station as the situation demands.


The EcoFlow Delta Max power station is an excellent example of the direction that eco-friendly backup power supplies should be heading in. 

Its innovative nature, backed by reliable technology, and several handy features make it an excellent device for anyone looking for a dependable backup power station.

What We Liked:

  • It’s portable.
  • It comes with an intelligent app for remote monitoring and control.
  • It’s compatible with a variety of peripheral devices.
  • Lightning-fast, smart charging will extend the lifespan of your batteries.
  • Ample outputs are perfect for powering a variety of appliances and devices.

Perfect For:

  • Campers and RV-owners,
  • Anyone looking for a reliable backup power supply,
  • Cabins and small households,
  • Powering remote observation stations,
  • Off-the-grid merchants.

EcoFlow Delta Max (FAQs)

How many solar panels would you recommend for the Delta Max?

We recommend using 2 sets of 400W solar panels for optimal solar charging. These panels should charge the Delta Max within 3 to 6 hours. 

Since the Delta Max has excellent compatibility, you can also go with fewer solar panels, such as 3 sets of 160W panels. These panels should charge the Delta Max within 5 - 11 hours.

What Is The Life Expectancy of the Delta Max’s battery?

The EcoFlow Delta Max has a pretty impressive 1-year shelf life. In other words, the battery will keep its charge for one year without losing its capacity. 

You can also fully charge the battery up to 800 times before its capacity lowers to 80%.

Is It Possible to Use the Delta Max While it’s Charging?

Yes, you can use the Delta Max power station while it’s charging. This ability makes it a perfect choice for food trucks, RV-owners, and campers.

Is It Safe to Use the Delta Max Indoors?

Yes, it’s perfectly safe to use the Delta Max indoors. Since there are no nasty fumes, you can have a reliable backup power station anywhere you go.

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