Disclaimer: This product was sent to us for free, in exchange for a review. All opinions expressed in this post are based on our personal views and experiences.
Does The EcoFlow Delta Mini Tick All The Boxes?
Ecoflow is a company that has gone under the radar a little in the solar generator/power station market.
If you have done a lot of research into portable batteries, you might have heard about them, but they’re nowhere near as popular as companies like Goal Zero and Jackery.
That said, their products have been pushing the envelope with innovative products and features in the past couple of years.
I’m going to talk more about what I feel are innovative features in the review, but things like expandability, WiFi-features, third-party solar panel support, high wattage USB C ports, fast charging, and EPS support are the main ones.
The power station I am reviewing in this article has all of those features except expandability.
The Ecoflow power station we have been testing for a couple of weeks and are going to review is the EcoFlow Delta Mini (click to view on Amazon).
Let’s start by taking a closer look at the features, then we’ll dive into what we like and dislike about the Delta Mini.
The Delta Mini has a battery capacity of 882Wh (watt-hours). The battery type used is lithium-ion.
That means that a fully charged Delta Mini will power a 50W device for almost 15 hours if you take the inverter efficiency into account (85-90%).
Here are the results of our tests in terms of how long the battery lasted with different products. Some of the numbers have been calculated by using the appliance for a short time.
- 32″ TV (40W) – 19 hours
- Playstation 5 and a 32 inch TV (200W) – 4 hours
- RV microwave (1200W) – 40 minutes
- MacBook Air M1 (45W) – 17 hours
- Space heater on high (1500W) – 30 minutes
- Air fryer (1300W) – 45 minutes
- Gaming Laptop (180W) – 4.5 hours
- Oscillating fan on high (60W) – 13 hours
- Coffee maker (600W) – 80 minutes
If you want to calculate how long the Delta Mini can power one of your devices, the calculation is: 882 divided by the required watts, multiplied by 0.85. For example (882/50W*0.85~15 hours).
You can usually find the required wattage on the device itself or on its power brick. I use a Kill-A-Watt (click to view on Amazon) which tells me exactly how many watts a device is using.
The Inverter/AC Outlets
An inverter turns the 12V DC battery power into 120V AC power, so you can plug in the electronics you usually plug into the wall at home.
The pure sine wave inverter is rated at 1400W, but the Mini has a feature called X-boost which increases the output to 1800W. This feature doesn’t work with appliances that have “strict voltage requirements”, according to Ecoflow.
If you need a power station with a higher rated output, I suggest checking out the EcoFlow Delta Max.
EcoFlow recommends using the X-boost feature with electronics and appliances that have heating elements, although they do not guarantee support for all appliances. The manual advises you to do your own tests to find out what will work and not.
We were able to run our microwave, an airfryer, toaster, and a coffee maker without any problems (not at the same time). Unfortunately, we don’t have any electronics that require over 1500W, so we couldn’t test the X-boost mode fully.
The X-boost mode can be turned on and off in the phone app, but it’s also automatically turned on if it senses that something is trying to pull more than 1400W.
A 1400W inverter is not powerful enough to run an RV air conditioner, but it’s powerful enough to power everything else in our Class C RV, including the electric water heater.
We plugged our RV into the EcoFlow Delta Mini with an 15A to 30A adapter (click to view on Amazon).
If you have a 50A RV, you’d need the 15A to 50A adapter.
In the EcoFlow app, you can choose to automatically have the inverter turn off after a certain number of hours, or to stay on until you turn it off manually.
EPS stands for emergency power supply.
This means that you can power your electronics with grid power via the Delta Mini. This is done by connecting the AC wall charger to the Delta, and connecting your electronics to the outlet(s) on the Delta.
The reason that this is not an uninterrupted power supply (UPS) is because it does not support 0ms switching, but 30ms.
This means that if you’re powering something like a desktop computer, the latency will most likely cause the computer to shut down if you lose the grid power.
EcoFlow recommends only charging/powering one device at a time using this feature to avoid triggering the overload protection.
The Delta Mini has a lot of ports, and can charge/power up to 12 devices at the same time.
These are the ports:
- 5 AC outlets powered by the 1400W inverter, only two are three-prong. The AC outlets can output 1400W combined, not each.
- Three USB A ports. One is a QC3.0 fast charge port rated at 18W, while the other two max out at 12W
- A regulated 12V cigarette port, rated at 12.6V @ 10A, which equals 126W max.
- Two DC5521 ports
- A USB C 100W port
All the different kind of ports (AC, DC, USB) are turned on and off by the push of a button, or in the mobile app.
The USB ports can be found on the front beneath the display. The rest of the ports are in the back.
The display shows input/output watts, remaining charge/discharge time, state of charge in percentage and bars, active ports, fan indicator, and warnings.
In the app, you can choose whether you want the screen to turn off after a certain number of minutes/hours, or to always stay on.
What does it mean when a solar generator has WiFi?
Well, in this case it means that the EcoFlow Delta Mini can connect to an available WiFi-network, be it at your home or a mobile hotspot.
When it’s all setup, you’re able to control and monitor the power station. You’re actually able to do several things that you can’t do unless you have the app.
The picture below shows what settings you can change on the Delta Mini with the app.
It only takes 1.6 hours to fully charge the Delta Mini if fast charging is enabled. There is a slide switch on the power station that lets you choose between slow and fast charging.
As I showed in the picture above, the app also lets you choose the AC charge speed. Note that you must slide the switch to “fast” to enable fast charging.
If you use the included car charger, it takes 9.5 hours.
If you’re out in the wild and want to use solar panels, it’s going to take 3-6 hours with 400W solar. With a single 100W panel, it takes close to 12 hours.
The solar charge controller is an MPPT controller. It can handle voltages between 11-75V, 10A, with a 300W maximum.
Note that due to the 10A limit, a single large panel (200W for example) might not be the best panel to connect since it could reach the 10A limit and waste some of the electricity generated. It’s safe though.
It would be a better idea to get two 100W panels and connect them in series, then connect the pair to the Delta Mini. That way, the total voltage put out by the panels will be within the 11-75V range, and less than 10A.
A parallel connection adds the amperages together but keeps the voltage the same. A series connection adds the voltages together, but keeps the amperage the same.
It’s very important to know the total voltage that your panels are going to be outputting, before connecting it to the power station input. Check the specifications of your panel and combine the open circuit voltages.
The good news is that EcoFlow includes an MC4 to XT60 adapter, so it’s ready for third-party solar panel right out of the box.
To connect two panels together, you can use an MC4 Y branch for a parallel connection. A parallel connection adds the amperages together while keeping the voltage the same.
I recommend doing a series connection though, because of the 10A max input.
A series connection is made by connecting the positive MC4 connector from one panel to the negative Mc4 connector on the second panel. You’ll end up with a negative wire from the first panel, and a positive from the second one, which is what is plugged into the MC4 to XT60 adapter.
A series connection adds the voltages together, but not the amperage. Therefore, you need to make sure that the total voltage (panel 1 VOC + panel 2 VOC) is within the 11-75V range.
If you’re not sure if a specific panel or setup is compatible, please leave a comment and I’ll do my best to help you figure it out.
In The Box
EcoFlow includes an AC cable, car charger, MC4 to XT60 adapter, a DC 5.5×2.1mm to 5.5×2.5mm cable, and a manual.
Weight & Size
The Delta Mini weighs 23.6 pounds (10.7 kg) and measures 14.9 by 7.2 by 9.4 inches.
Our Review Of The EcoFlow Delta Mini
What I Like
The 1400W inverter can power everything in my RV except the air conditioner. That’s all I need from a portable power station.
With the X-boost mode pushing that number to 1800W, there aren’t a lot of things that this inverter won’t be able to run.
Most of the electronics and appliances in the 1400 to 1800 watt range are the type of things that the X-boost mode supports, like countertop burners, coffee makers, microwaves, electric grills, air fryers, and similar kitchen appliances.
Extremely fast charging
The X-stream technology that charges the battery from 0 to 80% in 1 hour is one of those innovative features I was talking about in the intro.
As an RVer, that means I can use the battery for a couple of days when we only need to keep our electronics charged. We do turn off the inverter when we’re not using it.
We turn on/off the converter charger in our RV as needed. We do have a separate 100W panel on the roof charging our house battery, but when it’s cloudy we let the EcoFlow charge it up.
Then when the EcoFlow is getting low, I can fire up my generator for an hour (or 1.6 hours for a full charge), and be ready to go again.
Of course, if you have solar panels you might never need to turn on your generator again depending on your electricity needs.
This makes it a great power station for not only RVers, but car- and van-campers.
It would’ve been great if it would accept more than 300W when using solar panels as well, but it’s still better than what some of its competitors can do.
Last but not least, the AC charging cable doesn’t come with a massive power brick, it’s just the cable.
Lots of ports
We have already concluded that there are a lot of ports on the Delta Mini. They did a great job when designing this power station, and I haven’t seen any other power station that comes close in terms of ports.
100W USB C
The USB C port is a powerful one, and great for somebody like me that has a laptop that charges via USB C.
It’s not only about convenience but efficiency since turning on the inverter would be less efficient than charging via USB.
Can be controlled and monitored with phone app (WiFi support)
The EcoFlow app has worked great for me, better than I expected, and now I don’t want a power station that I can’t control from my bed.
I have it setup with my mobile hotspot that we always leave in the RV, and it works even if we’re away from the camper as long as both the hotspot and my phone has cell service.
Regulated 12V port
A regulated 12V port puts out a consistent voltage, which some sensitive appliances require.
This is essential if you plan on using a 12V fridge/freezer with your power station.
The included cables and adapters
Every other power station we have tested and reviewed has had a large power brick that has gotten extremely hot and been in the way.
The EcoFlow Delta Mini simply has a power cable that plugs straight into the power station.
A car charger is also included, which is great.
I also appreciate that EcoFlow includes the MC4 to XT60 adapter.
It’s not a UPS, but an EPS. Still, if you plan on using it at home to keep your devices powered, it’s much better than charging/discharging the battery all day every day, since that would cause a lot of unnecessary battery wear.
Design & Portability
I like the design a lot and the built-in handles that aren’t over-the-top. It’s very portable and easy to carry around.
Having the USB ports and the display on the opposite side of the AC outlets and the inputs is genius. Some may not like it, but in the RV it keeps everything looking cleaner and less messy.
What I Don’t Like
Only two of the outlets are three prong
The Delta Mini has a lot of AC outlets (5), but there is only space for two three prong appliances. I understand that it’s due to space limitations, but still.
Can’t charge via USB C
The USB C port is powerful when it comes to outputting watts, but it can’t handle input. Since I have some powerful USB C PD chargers, it would’ve been awesome if this port supported input as well.
Doesn’t use a common solar input
The XT60 connector is not a proprietary connector by any means, but it’s not a connector that’s included with most of the portable solar panels on the market.
It’s great that an MC4 to XT60 adapter is included, but that still requires a panel with MC4 connectors.
The fan could be quieter
Power stations have fans built-in to keep the unit and its parts cool when charging/discharging. The one in the Delta Mini is a little sensitive and you’re going to hear it pretty much anytime you use the inverter.
In a way, it’s great that it’s sensitive because you don’t want the batteries to get hot, but it’s something to be aware of.
The EcoFlow Delta Mini is simply one of the best power stations that we have ever tested.
It’s a combination of intuitive features and a lot of thought behind what goes in it and where. It’s the complete power station for travelers like us.
Most of the time, a good power station is missing something specific that keeps it from being great.
That’s not the case here, and the only thing we really want more of from the Delta Mini is battery capacity, but that’s why Ecoflow also makes the Delta Max and Delta Pro. The larger models can also handle more solar panels.
All in all, I don’t see how you’re going to be disappointed with the Delta Mini, as long as you understand its features and limitations.
Frequently Asked Questions about the Ecoflow Delta Mini
Can you fast charge with solar panels?
The max solar input is 300W. The 900W fast charging can only be accomplished with the power cable and a power source capable of outputting at least 900W, like a gas generator or a regular 15A outlet.
Can you use the outputs while the battery is charging?
Can you connect two Delta Mini power stations together?
No, you can not combine two or more of these.
Can it run an RV AC?
No, the most common RV AC (13,500 BTU) requires more than the rated 1400W.
Have any more questions about the Ecoflow Delta Mini review? Leave a comment below.