EcoFlow DELTA 2 Portable Power Station with 1-3kWh
EcoFlow DELTA 2 Portable Power Station with 1-3kWh Expandable Capacity, LFP Battery, Fast Charging, Use as a Solar Generator for Home Backup Power, Camping & RVs
Which solar panels can the DELTA 2 be used with?
EcoFlow provides a wide range of choice of solar panels that can be used with DELTA 2 (110W, 160W, 220W, 400W ).
How long can the DELTA 2 power my appliances?
Run time=1024Wh*0.85/operating wattage of your appliances.
Can I connect my DELTA Max extra battery to the DELTA 2 for use?
Yes. DELTA 2 can be expanded to 2048Wh with 1x DELTA 2 extra battery or to 3040Wh with 1x DELTA Max extra battery.
Does the DELTA 2 make noise?
Due to its fast-charging technology and powerful output, DELTA 2 has a higher need for heat dissipation, and thus users can sometimes experience higher levels of noise.
How to lower the noise level？
To lower the noise level, users may manually lower the input power via the EcoFlow app, or choose to power devices with a lower rated-power.
| Weight: | 12 kg |
| Size: | DELTA2 |
| Dimensions: | 40 x 21.1 x 28.1 cm; 12 Kilograms |
| Model: | Delta |
| Part: | Delta 2 |
| Colour: | Gray,black |
| Manufacture: | EF ECOFLOW |
| Dimensions: | 40 x 21.1 x 28.1 cm; 12 Kilograms |
| Size: | DELTA2 |
This is a great product, we have a motor home and often park off grid, this provides electricity for 3-4 days so we don’t have to pay to stay on a camp site if we don’t want to.
Great battery technology (lifepo4) and a support team that care about their customer experience !
I love the design. Seems well made and easy to use although it’s early days. Disappointing that your advised to store it only 60% charged as I want to keep it 100% charged for
emergencies.
I bought this for my camping trips but for the time being I’m using it at home im not sure yet if I’ve saved any money on my electricity bill but I did also buy a solar panel so I’m looking forward to this paying for itself in the long run id also just like to add ecoflow customer service have been extremely helpful 5 stars all around
I was going to semi wire it in so it would always be ready for action keeping the heating etc working..
However, the unit uses over 15 watts of power when plugged into the AC mains and with the AC output on (with nothing plugged in and the batteries 100% charged) it uses between 16 and 17 Watts.
Thus it would put another 50.00 on my annual electric bill (dec 2022 prices).
I would have expected this value for an “ECO” product to being under 2 watts when not charging and in bypass mode.
Other than that it all works well.
The firmware update from the app I found confusing as the version number seems to go down rather than up but later it is clearer as it updates the WiFi and main unit and thus two things are updated.
The timer options under Lab Features, Automations look useful and it should be possible to charge on off peak and use the inverter during the day (I suspect a smart AC plug / time switch would be needed to disconnect the unit from AC mains during the day so the battery is used for the load.
I also like in the app that you can set the unit to charge to a lower capacity than 100% which should make the battery last a lot more charge cycles.
One last note, you can’t actually turn it off when it is plugged into the mains, something the instruction manual fails to tell you.
As there are a lot of these power supplies available, I took some time to check my requirements and the features available. I chose the EcoFlow Delta 2 because it has the capacity to run most of the equipment in my home (not all at once) as well as portable tools away from a power source. The continuous output easily runs a small microwave and in x-boost mode will boil a 3kw kettle. The capacity of 1kWh gives a generous running time before needing a recharge. I also liked the fact it uses LiFePO4 (Lithium Iron Phosphate) batteries which not only have more charge cycles available but are safer. My only small complaints are the fans are rather noisy when at a high discharge or charge rate, and the switches on the back to turn the AC and DC outputs on are rather small to find. This is probably more noticable on the UK models as our mains plugs are larger than abroad. Overall I am very impressed with the EcoFlow Delta 2.
Would recommend this product to anyone, does exactly what it promises
Bought this along with solar panels so not totally reliant on the grid in case of power outages, as well as for it’s portability when travelling. Can charge from mains as well. It’s very easy to use, once you find the quite small charging buttons on front and rear, my wife uses it all the time now. Display is very clear to understand.
Haven’t had it long so don’t know if the promises of longevity will be fulfilled but it certainly feels like a well made piece of kit. It’s quite expensive but if it really lasts constant use for a decade or more it’ll be well worth the money.
Charging on solar is a bit rubbish this time of year, unless you have a massive array.
Charging through mains is super fast, but if you don’t need it quick, its best to adjust the charge input through the app. I usually charge at around 800w, to save the battery life.
I’m hoping it will save me a bit of cash by charging overnight on economy 7 and using it through the day to boil the kettle, run the vacuum etc.
I think with the threatened power cuts, it should prove invaluable at home. It is a lot of of money, so unless you have it to spend without missing it, then its probably not a good idea. I’ve found it extremely useful and the peace of mind, knowing I have a back up, is priceless.
I charges fast and runs most things and gives details on how much time is left before recharge.
Pleased with my purchase I have home solar but did purchase 160 solar panel which I use when camping would recommend
I bought this as insurance against possible power cuts coming up this winter, and with the extra battery this should allow me to power a PC for 4 hours so that I can continue to work… or watch TV for a couple of days!
Pros: Came quickly, packaged nicely, seems sturdy. Display makes sense (once you’ve tried it in different configurations) and it’s simple to use. Just plug in your appliance(s) and press button on back and appliance works. Plug ecoflow into wall, switch on and it charges. Use the App and you can change the rate of charge. All in all a simple operations.
Annoyances: First annoyance was opening the manual and seeing that the saftey instructions warn that if used to power a fridge then power fluctuations might cause the ecoflow to shut down. Thats obviously annoying since if power was off for any length of time the powering the fridge would be very useful. It also tells you to contact them if you have pacemakers, hearing aids, or implants before you use it. Not a problem for me (yet) but seems like they should state that more clearly when purchasing!
Charging noise: It’s very loud when charging – even when the charging rate is turned down to 200W.
Running noise: When trialled with my TV at about 95W, the unit is silent for most of the time, but every 10-15 or so minutes the fans turn on for 30 seconds or so. It’s reasonably quiet and you can live with it, but obviously it would be nice if it was completely silent when pulling gentle loads. In fact the the fan does go on and off even when nothing is being powered / charged.
UPS capability: I’ve tried using the system as an UPS (e.g. ecoflow powered from mains and device powered from the ecoflow, so that if mains dies the device continues uninterrupted) to power flat screen TV plus BT box plus ethernet hub. On switching off the mains, the BT box seemed not to notice, but the TV went into standby and then rebooted. This means I’m not sure if I can use it as an ups for a PC (or two) and am wary of testing it out. Perhaps getting a cheaper, low power UPS, to place between the ecoflow and pc might provide a high power UPS solution without costing the earth.
Niggles:
1. Whilst trialing this I put it next to my TV and found that turning the AC output on/off was really tricky since where I’d put it it was difficult to reach the AC on off button at the rear of the unit (epecially with the extra battery on top). Be nice if that button was on the front.
2. Why no timer? It would be useful to control when the ecoflow charges so that you can charge on an economy rate, or, as in my case, charge when Its likley my solar panels are producing excess power. One way around this is to put a timer on the mains but it could have been useful it was in built.
3. Why does the app need me to have bluetooth and location switched on? Location burns my phone battery and I have no love for any app that needs to track me so if so i want to use the ecoflow app I have to turn location on and then off afterwards.
So when all is said and done, this is still a pretty amazing kit. It is expensive but seems better value for money than other similar units. Come the summer I will be able to charge it for free with my excess solar power, and hopefully find a suitable location for it to power stuff in the evening. However I don’t think I’ll ever recover the cost of purchase, but it will be nice to be partially immune from power cuts.
It’s sturdy and compact – can easily be stored away when not needed. It quickly recharges when line power comes back on. It works with most domestic appliances – you must be aware of it’s max power output capabilities and be sensible.
Each coffee is taking about 3-4% of the charge, so we’re good for a few days, and can charge up when we’re on a site with electricity. Small enough to fit in a locker too.
At some point I may upgrade my campervan to lithium and an invertor, but this is fine for now.
Having recently heavily researched Solar power generation due to the massive increase in energy prices i decided to spend some of my hard earned cash in this technology to see how well it performed.
I initially purchased a 537wh Bluetti EB55 along with a 200w solar panel. Whilst this performed well i was disappointed at how quickly the battery drained with medium draw appliances, and the fact the Bluetii display was information poor, ie no exact battery percentage or estimated time of power draw left. I also only wanted a LiFePO4 battery due to the serviceable life of these batteries (3000+ Charges/Cycles) compared with standard lithium ion batteries which are only around 800 cycles. The market was very limited for these type of devices, hence why i choose the mid-range bluetti. I did rush into this purchase and kind of regret now understanding watt hours and power draw.
After a few days of use and a lot more research it did get me hooked on the future of this technology and the fact i could harvest free energy from the sun. As a direct result of my first experiment i did some more research and found that ECOFLOW were releasing a LiFePO4 generator – so i decided to invest some serious cash in the Ecoflow Delta 2 and pre-ordered.
The ECOFLOW Delta 2 is a lot bigger than my Bluetti, however it does have around twice the battery capacity and additional power outlets. When it arrived my first impressions was that this was a very well built premium bit of kit. Turning on the device i noticed that it was around 38% charged so i immediately connected it to my 200w solar panel. The day was fairly cloudy was intermittent brief sun, after a few hours i managed to get the battery up to the mid 50’s. I wanted to test this device with 100% storage power so decided to connect it to my house mains to charge the remainder of the battery. Although i never intend to charge this via mains electricity i wanted to test the quick charging functionality for emergencies. The first thing that i liked about this over the Bluetti was that there was no external charging brick (that’s a huge drawback for me when i do a direct comparison) the Delta 2 just has a standard kettle lead which you plug directly into the unit and the mains. Within a couple of seconds of doing this the fans for the unit kicked in – wow they are loud and powerful. I have uploaded a video of this so you can see how loud this thing is when AC charging. The unit drew between 1kw and 1.2kw of electricity from the grid, and wow this thing can charge fast! 0-80% in 50 mins! As i already had over 50% charge it didn’t take long to reach 100% capacity – the unit lowers the charging rate +80%, and the fans slow down somewhat – but you can definitely still hear them. When charging via Solar the fans were not nearly as loud. You have an option in the app (more about that later) which allows you to limit the AC Charging rate, which in turn should lower the fans. Included with the device is an MPPT to 12v car charger so you can also charge this device from your vehicle.
Now for the power test! I wanted to see if this unit could power my UST Projector, and if so how long for. Plugging in my projector the display showed a power draw of 312w, this meant i would be lucky to get 3hrs from the unit which wasn’t ideal. I therefore lowered the brightness of my projector down to 50% and this increased the draw time to 5.5hrs. I was super happy with that! We used the unit all evening to watch TV on our projector and the battery was down to 7% – i was super impressed.
Over the next few days i did a ton of more tests on this device and all impressed me. I loved the fact that the display showed me the exact battery percentage, the power draw from the devices and the remaining time. Using the USB sockets on the front of the device i was able to charge all of our smaller gadgets like phones/iPad’s etc. I even asked my partner to power their two work laptops from the Delta 2, this also worked fantastically. With lower powered devices you could get several days use out of the Delta 2. A rough calculation of the usage time compared to the 1024kwh battery worked out to around 84% during my real word tests – this is relatively standard across the battery generator range when allowing for Inverter draw and displays/wifi etc. The Delta 2 also has pass through charging which allows you to solar charge and draw power at the same time.
Over the weekend we had some fantastic sun, and all of my Delta 2 energy was drawn from my solar panels – i have now upgraded to two panels to increase the charging times. The Delta 2 at it’s peak was drawing +300w from my panels in bright sunshine. The charging time for this was showing around 3.5hrs. I am confident in the summer months i could easily draw 1kw and fill the batteries in just one day of sun.
The device has 4 x 3 pin UK AC Sockets on the rear, along with the MC4 solar input connection and the AC Kettle plug for AC charging. Here you will also find a reset button should you ever need to use it. Also on the rear is a 12v cigarette input and 2 x DC5521 barrel inputs. On the front of the device is a lovely crystal clear LCD display which shows you a wealth of information such as time to charge remaining, time of discharge remaining, watts in and watts out and a very clear battery percentage. You also have 2 standard USB a sockets 5v 2.4a 12W max, 2 USB A Fast Charging Sockets 5V, 2.4A / 9V, 2A / 12V, 1.5A, 18W Max, and two USB C sockets 5/9/12/15/20V, 5A, 100W Max which support super fast charging. The USB C sockets are powerful enough to use and charge my laptops at the same time. Each group of inputs has an individual on/off button to switch on that part of the inverter. Individual control is better as this will save unnecessary battery drain.
Another huge benefit of owning this device is that it is also Bluetooth and Wi-Fi compatible. You need to download the free ECOFLOW app and this allows you to see input/output rates on your phone even when you are away from home/the device – it’s basic but works well. I loved the fact i could be at work and check the solar wattage going into the device! It was kind of addicted. The app can sometimes mess up and not update correctly, but i am hoping this can be fixed in a software/firmware update – which incidentally can be sent to the DELTA 2 via your phone/tablet!
The DELTA 2 can handle devices up to 1800w with a surge boost of up to 2400w. This enables this device to power pretty much any standard electrical appliance plugged into it and it will work, albeit perhaps at a lower wattage if the appliance likes this, ie heat guns etc. The device also has a built in UPS so that if your mains powers goes out then the device will switch over to carry on powering your devices – it does have a few milliseconds’ delay (unlike my purpose UPS device) but for most electronic equipment this should be fine. It also output a true sinewave, so sensitive appliances like computers etc would be fine with the Delta 2’s power supply.
Solar input maxes out at 500w. You need to be super careful if you are connecting this to multiple solar panels though so that you do not go over the voltage which maxes out at 60V 15A. Before you invest in solar panels always check the Open Circuit Voltage (OSV) of the panel to ensure it is within the range of 11-60v, one panel will be fine but adding multiple panels can take you close to this range if not over – you should always allow a 20% threshold too for cold sunny days. Working out solar compatibility is a bit of a minefield, but after weeks of research i believe i now understand the basics. To help you if you connect two or more solar panels in parallel with a Y adapter then the voltage of the panels remains the same but the amps are added together, if however you connect in series (positive to negative leaving only two MC4’s) then you need to add the voltage of all your panels together and the amps/current remains the same. Thus, be super careful not to exceed the specs of the Delta 2 or you could seriously damage it.
So in summary would i recommend this device – without hesitation YES! This technology is still super expensive, however it is an absolutely amazing product i really wish i had found this product before i purchased my Bluetti – it excels the Bluetii in every single way! To generate free electricity from the sun is fantastic, but to store it to use later is beyond amazing. This little guy does it all and does it very well… excellent storage capacity at just over 1kw of electricity (Around 28p at time of writing this review) truly portable – weights around 12kg, but has great handles to distribute the weight evenly, you can even add the battery expansion pack to take this up to over 3KW! Firmware updates are provided via the app to the device so it stays current, fantastic detailed display which is easy to read even in sunlight, great phone app, fantastic selection of power ports, fast solar charging, super fast AC charging, expandable up to 3kw with the additional battery pack, 8.2yrs of daily charging before battery depletes to 80% capacity & to top that ECOFLOW offer a full 5yr guarantee. I honestly can not recommend this product enough if you want to invest in a small solar energy setup – purchase cost to payback would work out at around 10yrs (excluding solar panels and wiring) with current energy prices at 0.28p per KWh, however this isn’t all about money, this device is about emergency power, portable power (camping etc) being more green and protecting the environment. I genuinely love this product and wish i had purchased this before i wasted money on my Bluetti. I intend to save up to buy the add on battery pack… but rather disappointingly that may be a while yet!
I hope that you found my review helpful.
Had a good feeling when the warranty and unit lifespan increased, always a good sign of build quality when companies put out 2 year warranties on their products?
Will update on long term use…….