EcoFlow Delta 2 Review
Review Tech

ECOFLOW DELTA 2 REVIEW: A complete power cut solution

A complete solution to power cuts is probably something that seems out of reach financially for most people. I’ve looked before and found that a lot of systems are thousands of dollars out of my budget.

I’ve reviewed a few systems by EcoFlow recently, but none were able to offer me a complete power cut solution; until now that is. EcoFlow sent over the Delta 2. It’s a 1800W (2400W peak) beast that’s capable of powering 13 devices at once, which in my household is enough to power most things I’d need, in the event of a blackout and/or big camping trip.

For my review, I put the Delta 2 through it’s paces at home. Aswell as this, I took the Delta 2 with me to the Scottish Highlands. I used it over a two week period out of the back of my car, paired with a few electrical appliances to give it a thorough test.

Let’s find out just how good this unit is and if it’s worth buying.

PS – excuse the dirt and dust in the boot (trunk) in the image below, we’d been on several hikes and had been carrying quite a bit of muddy kit at this stage.

EcoFlow Delta 2 Review
EcoFlow Delta 2 Review

EcoFlow Delta 2 Review

As has become tradition, I’ll start with my first impressions. I’ll then move onto looking at the build quality, features, power performance and pricing.

In terms of my first impressions, the box arrived from the distributor very quickly. It was packed in extremely thick cardboard. There were four secure internal foam inserts keeping the Delta 2 from moving around inside the box, which is good; you don’t want any ‘in-transit’ damage to happen to the unit.

I really like the branded box too, it speaks volumes when a company pays just as much attention to the box design as they do to the actual product.

Opening up the box I was greeted with the top of the lovely looking Delta 2. I was pleased to see it didn’t have the almost pointless eco friendly sticker on the top that the Delta Mini had.

I was also impressed by the almost complete lack of single use plastic packaging. The only real bit of single use plastic is the LCD screen protector, which I’ll grant them, unless a recyclable one becomes available.

The cables come bundled inside a luxurious black cardboard box. I’ve kept this box to keep the cables separate from the other units I possess. Some of the cables shouldn’t be used across devices for power rating reasons.

The instruction manual is also comprehensive, printed on good quality paper and is written in native English which is good to see. Sometimes instructions are translated into English without direct meanings across languages, which can result in some weird, albeit humorous phrases used. We don’t have that problem here.

I lifted the Delta 2 out of the box and was surprised by how heavy it was, clocking in at 12kg (27lbs), it’s not exactly a lightweight, but I had expected it to weigh quite a bit more considering the power it’s packing.

Overall, my first impressions are good. I can’t wait to get it charged up from an A/C power outlet and try it out on the road. Whilst it’s charging, let’s have a look at the build quality, is it well made?

Build Quality

All of the EcoFlow unit’s I’ve had the privilege of reviewing have been well built, with particular attention paid to the product fit and finish.

Speaking of the fit and finish, each component in the main body of the unit fits together precisely, there aren’t any unnecessary gaps between them.

The A/C ports at the back are finished superbly with robust plastic. I suspect it’s ABS plastic, but I don’t have anything to confirm that. Power plug’s in the UK are quite robust and can have quite rough edges, if you’ve ever trodden on an upturned plug you’ll know what I mean!

I was worried that over time the plastic trim around the socket on the back of the Delta 2 would wear away, however having used it for almost two weeks, it doesn’t show any signs of wear at all – which, is great to see.

To describe the build quality as simply as I can, it feels reassuringly solid. It feels like it’s a real quality product. You can tell it’s been built with the care and attention a premium product deserves. You’ll have to handle one to understand what I’m on about, or you can just take my word for it.

The two tone plastic body of the Delta 2 is made with the same really tough plastic as the back of the unit. When I reviewed the River 2 I took issue with the fact that the plastic was easily scratched. The Delta 2 doesn’t scratch as easily. How do I know? Well, I performed a scratch test of course!

I took the tip of a folding knife and ran it down the side of the Delta 2, it left a faint scratch but nothing as deep as on the River 2, so they’ve either improved the plastic or it was a one off on the River series. I suspect the latter.

I really appreciate it when a company truly understands it’s customers expectations in terms of a quality product, EcoFlow have hit the nail on the head with this offering.

On the front of the unit you’ll find USB-A and USB-C charging ports aswell as the LCD display. The screen is super bright and easy to read the information displayed upon it.

At the side of the Delta 2 you’ll find the port for the add-on battery which is honestly a brilliant innovation, I hadn’t considered the ability to chain together portable power stations. If you do go ahead and get the Delta Max battery it’ll take your power output potential to over 3 kWh!

Overall, the build quality is simply exceptional. Let’s move on now to take a look at the power and performance.

There are plenty of sockets to use!
There are plenty of sockets to use!

Power & Performance

The proof is in the pudding, as they say. What can this thing power? Well as I mentioned further up the review, it can power 13 devices simultaneously, which is pretty outrageous and gives plenty of bandwidth to power a vast array of devices.

The most important thing for me as a consumer, is ease of use and compatibility. Of all the home appliances you have, EcoFlow say you’ll be able to power 90% of them; if this claim is true, it’ll certainly live up to what I said in the title – A complete power cut solution.

I headed up to the Scottish Highlands for a winter holiday at the end of 2022. I decided to take the Delta 2 with me, that way I could park up at the start of a long hike and when we got back, feeling worse for wear, I could simply pop the boot (trunk) open and stick the kettle on, make a cup of tea and cook some lunch.

As a proud Brit, a cup of tea is extremely important to me, so being able to make one using a proper kettle whilst out in the sticks, is an absolute game changer.

I’m used to having to boil water using a gas camping burner or an ethanol stove. Both of which have downfalls, camping gas has poor winter performance and ethanol can be quite smelly.

The travel kettle was pulling over 800w.
The travel kettle was pulling over 800w.

Kettles are quite power hungry, readers of my Delta Mini review will know that I hit the limitations of that unit quite quickly when I tried to boil water with a 3000w full sized kettle. So, my kettle of choice is a travel kettle that consumes around 1000w which is well within the limitations of the Delta 2.

I filled the kettle with water from my Nalgene bottle and plugged it into the Delta 2. I had already tested this set-up out at home prior to setting out on my 1500 mile road trip, so I knew what to expect.

But, for those of you who haven’t used a travel kettle before, it does take a lot longer than a normal, full sized kettle. On holiday I had an abundance of time to relax whilst I admired the sights and sounds of the Highlands.

I wanted to perform an experiment, the idea was to time how long it took for the Travel kettle to boil using the EcoFlow and then time how long it took to boil the same kettle using mains power.

To make it fair, I used water from the cold tap in my kitchen, filled to the max level on the kettle. I wanted several hours between each test, to ensure the kettle had no residual heat left from the previous test.

So, how did the EcoFlow match up to mains power? Here’s the results:

  1. Mains Power: 04:44.52
  2. EcoFlow Delta 2: 04:41.62

I was quite surprised by the outcome. The EcoFlow Delta 2 boiled the kettle 3 seconds faster than the house mains power. I suspect it’s down to the smart technology they have employed in the Delta 2. The EcoFlow is able to provide just the right power draw to ensure efficiency.

The fans kick in quite quickly to provide effective cooling, they can be quite loud. I don’t have a device to measure just how loud they are, but they’re on a par with that of a standard AirFryer.

It’s reassuring to know that if you do suffer from a power cut you can still make a cup of tea! It’s not only a power hungry travel kettle the Delta 2 will run, though.

I tested a load more gadgets and captured some key details for each one in the table below.

Appliance:Socket:Powered It:How Long:Power Draw:
USB Light bulbUSB-AYes99 Hours3w
Air FryerA/CYes54 Minutes848w
Travel KettleA/CYes1 Hour800 – 1000w
Toastie MakerA/CYes1 Hour675w 
Electric HeaterA/CYes29 Minutes1456w
Fridge FreezerA/CYes74 Hours150 – 250w
Laptop ChargingA/CYes18 Hours35w
 Nintendo Switch ChargingUSB-AYes99 Hours1w

This unit will power enough devices to allow you live relatively comfortably during a power cut and be extremely comfortable during a family car camping trip.

It was an absolute pleasure to use this over two weeks in the Highlands. The ability to recharge it from the 12v output in my car ensured I always had power when I needed it.

Speaking of recharging it, you can charge it from mains power, 12v or the EcoFlow solar panels. It’ll recharge 0–80% in just 50 minutes and 0-100% in 80 minutes with mains power. The 220w solar panels allow for eco-friendly re-charging and can charge the unit to 100% in 3-6 hours.

EcoFlow use lithium iron phosphate battery technology in the Delta 2. The LiFePO4 battery bank has an advantage over their competitors that use lithium ion, both in terms of cycle life (it lasts 4-5x longer), and safety.

LiFePO4 are the safest type of lithium battery you can get. It’s not prone to overheating and even if punctured, it won’t catch fire. The internal cathode material is also non-hazardous and therefore it poses no environmental or negative health hazards.*

Overall, I’m thoroughly impressed with the power performance. I can’t wait to take this unit with me on some more adventures. And, not forgetting, it’s reassuring to know that in the event of a power outage we can ‘keep calm and carry on.’

EcoFlow Delta 2 Review: More than enough power to run an electric heater.
More than enough power to run an electric heater.

How Much & Where To Buy

You’ll be able to pick the EcoFlow Delta 2 up from either Amazon or via the official website. I’ve included buttons below that’ll take you to your preferred store.

EcoFlow Delta 2 Review Summary & Verdict

There’s literally nothing I dislike about the Delta 2. It’s simply superb and to give it anything less than a 10/10 would be doing it an injustice.

Score: 10/10

Whilst it is quite expensive, it’s not too out of reach for regular people and it really is the perfect backup solution to a power cut. It turns car camping in luxury car camping.

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The EcoFlow Delta 2 was sent to us in exchange for an honest review. We have not been paid for our opinions.

*Source: ecotreelithium

It’s quite loud once the fans kick in.


  1. antoon cornelissen

    Does the Delta2 feed back into the home electrical circuit OR MUST I CONNECT ALL MY APPLIANCES via extension cables to the DELTA 2?

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