EF EcoFlow DELTA 2 Portable Power Station with 1-3kWh Expandable Capacity

Review from an off-grid user based in the UK - power your CPAP using the sun! My primary use for this Portable Power Station was to power an NHS provided ResMed Air10 Autosense CPAP machine. After extensive research I was still unsure as to which power station to go for until I contacted EcoRiver for their recommendation on which one would meet my needs. They recommended this one - and being much more powerful and more expensive than the original one I was looking at I was initially a bit skeptical. However this machine is the minimum you need to power your ResMed Air Sense 10 Autoset on AC power (it is more efficient to power it using the 12V DC to DC converter, available from ResMed, but as far as I know this option means the humidifier function on the CPAP machine does not work as it needs more than 12V). Using this machine I could power my CPAP machine on AC power, just like at home, for two nights without recharging, using the humidifier function. However I used EcoRiver's excellent 400W solar panel (which I will review separately) to recharge it every day, meaning I had tons of extra power left over. This machine can easily power a toaster or microwave and can even power a powerful mains powered GHD hairdryer for a short time. DOMESTIC KETTLES NO - TRAVEL KETTLES AND LOTS OF OTHER THINGS YES! It would NOT be able to power a domestic voltage AC kettle as these use typically 3000W for a short time - when off grid in my view you're better off using gas to boil water rather than a domestic kettle - though it will easily power travel kettles, full domestic power AC toasters, lower wattage travel toasters, and all manner of other gadgets. It goes without saying that if you're planning to use lots of high wattage tools for a long time you will need an even bigger battery but for phones, tablets and laptops this machine more than has you covered. At times during a recent camping trip it was fast-charging four phones simultaneously. SILENT CHARGING FROM THE SUN! Before I bought this device we had to rely on a petrol powered 1800W generator to recharge things and use a TV in the caravan, which is loud enough to be pretty antisocial not to mention the fumes. Using this battery paired with a 400W EcoRiver solar panel provided free, silent power. Even on heavily overcast days with light rain, the panel was still providing 40w input power, which would recharge the battery over 6-8 hours from 50% full. In direct bright sunshine, the panel once recharged the battery from flat in two hours, which is an amazing amount of power. MAINS AC RECHARGING IN BAD WEATHER/WHEN MAINS POWER IS AVAILABLE This battery can recharge off a normal mains AC outlet, drawing 1200w, in about 50 minutes, using the provided kettle-style lead. Fairly loud fans kick in to cool it during this which is reassuring. This was a great feature off-grid as during one period of intensely heavy rain and dense overcast lasting two days I ran the battery flat and was able to recharge it using the AC outlet of a petrol generator in less than an hour. This is an amazing piece of kit and the accompanying app for iPhone is very clear. It was great to be able to check the solar charging was working well and how much power was flowing in and being used simultaneously. It is worth every penny. Buy it.

I recently decided to enhance my fishing trips with the acquisition of the EcoFlow DELTA Power Bank coupled with the 200W solar panel, and I couldn't be happier with the decision I made. Starting with the DELTA Power Bank, it is indeed a powerhouse that seamlessly backs up all my devices without any hiccups. The capacity is monumental, allowing me to recharge multiple devices numerous times over. Moreover, the array of ports available ensures that I can charge virtually any device, enhancing its versatility exponentially. The fast-charging feature is another boon, recharging the entire power bank in under two hours — a feature I find indispensable when I'm on a tight schedule. The 200W solar panel is a revelation in itself. It’s not just a power solution but a sustainable one, allowing me to harness the sun's power to fuel my devices. This has significantly extended my ability to stay off the grid while keeping my essentials powered. I set it up beside my fishing spot, and it silently does its job, making sure I am never left powerless in the great outdoors. Furthermore, I admire the build quality and design of both the power bank and solar panel. They have weathered several fishing trips now, facing both moisture and dust, and have showcased remarkable durability. The compact and portable design does not take up much space, which is vital when you need to carry a lot of fishing gear. But it’s not just about power; it's about the peace of mind these products bring. Knowing that I have a reliable and sustainable power source allows me to focus on the joy of fishing, capturing great catches on my phone and sharing the moments live with friends, with no worry about depleting my battery. In conclusion, the EcoFlow DELTA Power Bank and the 200W solar panel have proven to be the ideal companions for my fishing adventures, combining innovation with reliability and sustainability. It’s a purchase that I am delighted with, and would highly recommend to fellow anglers and outdoor enthusiasts for a worry-free and powered outdoor experience. I am giving this combo a well-deserved 5 out of 5 stars

I’m now 4 weeks in using the Delta 2 and can truly say I’m impressed, the build quality is excellent, The ergonomics... The design of the handles makes it very easy to carry with the 2 big study handles, it’s very easy to carry with just one hand (just like you are carrying a heavy bag) the handles are comfortable in your hand. This is a portable power station and designed well for exactly this purpose. Charging of the unit... I have 2x410w solar panels in Rensol tubs (wired in parallel) on a first-floor flat roof, I can’t put solar panels on my 3 story house due to being in a conservation area but this seems to be just the right amount of power, pulling in 490+ watts in full direct sunlight(charging the battery fully in approx.2.5hrs .And still pulling in 70-90 watts in full cloud cover. Charging from the mains takes approximately 1h 30m (rough estimates as have not precisely timed it) Powering Electrical appliances... I have Been testing this out, it will run the washing machine (1hr 34m cycle) 1400 spin at 30degree the unit only uses 29% battery so I can get 3 full cycles out of one charge. The washing machine has not used a single bit of grid power since my purchase. This dishwasher is a different matter, A 1hr 30m - 30–60-degree cycle it will use 91%, but on the bright side I now realize how much energy my dishwasher uses. When I get around to suppling solar to the kitchen it should breeze this if charging at the same time. It will run my air fryer (2400w Ninja AF400UK) one draw at 1200w but will throttle to 1800w with both draws going at the same time. But still works fine. All above is done with X-Boost enabled. I now charge my electric bike (with solar) so my commutes are now free, saving money on fuel. Interface & Connectivity… The display is clear and simple giving only the relevant information needed… charge input and discharge estimate times, to get full use you must install the app, this is made very simple to install and link with the supplied instructions. This will then open lots of settings including updates. Pro’s… Will power almost any house appliance, good ergonomics easy to transport, charging from solar is fast, from AC even faster. Excellent battery life cycles 3000 to 80% if you cycle it once day that would be 8.2 years, the app is easy to use. A 5year warranty when you register it. Also, there seem to be a very good community on social media. Cons’s… The fan is loud and kicks in, full tilt at only 200ish watts. Even when I feel the expelled air it is not that hot, so hopefully a firmware update could fix this in the future. Overall, I’m impressed with unit and still finding out how to best utilise the D2P and really chuffed with my purchase.

I am so pleased with this. I got it for two reasons, the main reason being for camping but I'm also a bit of a prepper, so this is ideal for both. So it powers my huge camping fridge and I can charge it using my 400w portable solar panels. Without the solar panels it will power my fridge for about three days. It can power my home fridge freezer for about two days. I like the amount of power outlet options. The app is very useful and offers me full control of the powerstation and really accurate and clear insight into it input and outputs. I like how i can choose how it charges quicker but louder or slower but quiet. I like how it can be charged by solar or outlet whilst having power going out too. It tells you exactly the output and input watts. Also altering it's charge and discharge limit. The app has a very user friendly interface. However, it's not necessary because the control pad on the device is pretty good. You can also turn the beeps off and also the screen to turn off, which is ideal when camping. The build quality is extremely good. I like the handles, they're sturdy. It's heavyish but maneuverable. I would recommend getting the case for the extra protection though and there is a pocket on the top to store the leads.

This unit has surprised me, I was not sure if it would be powerful enough for the kit I needed to run of it - computer, three screens, router, speaker and a 500watt heater. It has coped very well with plenty of power to run it all minus the heater for most of the day and with the 400watt solar panel it runs it all for the day. The heater knocked it down to 1 hour, but with the solar (running at 250watts on average) it in fact lasted more than 2 hours - enough for my needs. However, as it is expandable, if I need the heater for longer I will just expand the system. The fan is silent when using less than 100watts (ie when everything is on standby) but when using the heater which draws 500watts the fan kicks in as is quite noisy. This unit is definitely value for money, well made, light enough to be portable, plenty of plug options. Would definitely recommend.

I mainly got this for home emergency power to keep things running during power cuts. 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.

I recently purchased the EcoFlow Delta 2 on a shockingly good deal I saw on Amazon and I must say, it's nothing short of a game-changer! This portable power station has completely redefined the way I approach outdoor adventures, emergencies, and even daily power needs. One of the standout features of the EcoFlow Delta 2 is its seamless compatibility with portable solar panels. That being said, I would have appreciated the inclusion of the standard MC4 connector adapter; had to purchase it separately. This gave me the ability to harness the power of the sun to charge the Delta while off the grid. The flexibility to charge using solar energy not only saves me money in the long run but also empowers me to go on extended trips without worrying about running out of power. Speaking of power, the EcoFlow Delta 2 truly lives up to its name. With an impressive capacity, it effortlessly handles charging a multitude of devices simultaneously. From smartphones and laptops to power tools and even mini-fridges, the Delta 2's array of output options ensures that no matter what the situation, I'm always connected and powered up. The fact that it maintains a stable and reliable power output is particularly reassuring, especially during crucial moments or in unexpected power outages. The user-friendly app and controls make operating the Delta 2 a breeze. The large, bright LCD screen provides real-time data on input and output wattage, battery level, and more. This keeps me informed about the system's status, ensuring I can make the most of the available energy. Despite its robust power capabilities, it's surprisingly portable - lightweight and easy to transport thanks to the built-in handle. All in all, the EcoFlow Delta 2 has exceeded my expectations

This is an amazing piece of kit that requires a detailed review ! 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.

I was searching for space saving and safe efficient power station for fulfilling my camping needs, I suddenly found Ecoflow devices. Previously I was using butane gas stove which has limitations as well safety issue. Whereas Ecoflow delta 2 can support induction heaters, electric fan, lights etc. I recently purchased the EcoFlow Delta 2 from Amazon. Ecoflow team was very cooperative and provided video demonstration and after watching the video demonstration and testing it out myself, I am absolutely thrilled with this product! It has exceeded all my expectations, and I couldn’t be happier with my purchase. The setup was incredibly straightforward, and the video demonstration made it even easier to understand all the features. The Delta 2 is packed with cutting-edge technology, and its sleek, compact design is both stylish and practical. I was amazed by how lightweight it is, considering the massive power it delivers. The battery life is phenomenal! I’ve used it to power multiple devices simultaneously, including my laptop, mini-fridge, and even a small air conditioner, and it handled everything without breaking a sweat. The fast-charging capability is a game-changer—I was able to recharge it to 80% in under an hour, which is perfect for my busy lifestyle. I also love the versatility of the Delta 2. The multiple output ports, including USB-C, AC, and DC, make it compatible with almost any device. The app integration is a fantastic addition, allowing me to monitor and control the unit remotely. It’s so convenient to check the battery status and adjust settings from my phone. What really impressed me is how quiet it is. Even under heavy load, the noise level is minimal, making it perfect for both indoor and outdoor use. Whether I’m working from home, camping, or dealing with a power outage, the EcoFlow Delta 2 has become my go-to power solution. Overall, the EcoFlow Delta 2 is an outstanding product that delivers on every promise. It’s reliable, efficient, and packed with features that make life so much easier. If you’re looking for a portable power station that combines power, convenience, and innovation, look no further. I highly recommend the EcoFlow Delta 2—it’s worth every penny! Thank you, EcoFlow, for creating such an incredible product!

Si funciona para lo que se diseñó.

Es recomendable, sobre todo ahora que hay apagones de luz. Tiene multienchufes para poner ventilados. Cargar celular prender una lámpara de luz etc

EcoFlow products are an excellent choice compared to traditional inverters, especially if you're a camper or frequently travel by car. The EcoFlow power station offers unmatched convenience for those on the go. The customer support is also great; after receiving the product, an installation guide schedules a WhatsApp video call to walk you through the setup, explain product features, and demonstrate the mobile application. Why I chose the EcoFlow Delta 2—I'm not a fan of traditional inverters with their bulky batteries, lack of portability, and messy wiring. EcoFlow products, on the other hand, offer a sleek design and an outstanding user experience. I’m using the power station with a parallel connection to the power grid, and it’s been perfect during power outages, keeping my laptop, mobile devices, fan, AC, and one LED light running smoothly. I hope the battery life holds up as promised, but overall, I’m extremely satisfied with this product. And if the power capacity isn’t enough, no worries - you can easily extend the battery as well.

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