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 |
Alongside the EcoFlow DELTA 2, we also purchased the 220 Watt Bifacial Solar Panels, for charging when we are off grid. They too have been brilliant, and we are really impressed. They charge the battery quickly and easily, so we would definitely recommend them too, alongside any power pack.
To sum up the EcoFlow DELTA 2 – Fantastic product, versatile, well built and built to last, so a big thumbs up from us all.
I liked its design, the clear digital display, the size and shape and the fact it was light to carry at 12kg as weight was very important.
I have tested it fully with using it to charge multiple phones, smart watches and toothbrushes at the same time whilst camping. I also used it to power my air fryer and my induction hob which I was surprised it could power. Yes the induction hob drained its power but enabled me to cook a meal easily when the camping has run out.
When I charged the Delta 2 from the mains power it was charged in under 90 minutes. Another tick in the box.
I am impressed by the App you can download for your mobile phone/tablet that you can use to monitor or control it, either through Wi-Fi or Bluetooth for easy convenience is great, along with the 5 year warranty (you must register online) is a definite selling point
I use the Delta 2 for camping, in the motorhome, in the shed and It is a great convenient power source, as well as peace of mind if needed during a power cut.
I am extremely pleased with my purchase and have used it every weekend since purchasing.
Overall, a very impressive power station, which I would highly recommend and friends are now interested after having seen it in use and after hearing our feedback on our purchase.
I have tried out all my important appliances with the Eco flow power stations and have found everything to be compatible. The Delta 2, weighing about 12lbs is the heaviest that I can cope with, but will actually keep my gas boiler going, which is very important. I only had to change the boiler from a hard -wired switch to a 3 pin plug, so can now plug the boiler into the Delta 2, as needed. It recharges very quickly from a mains supply, but I am still struggling with my solar panels. That is a different story! I have actually invested in 4 Delta 2’s and 2 River 2 Max’s, which should see me through a longish power outage. The only thing I don’t like is that I purchased an extra battery for the Delta 2 and was not aware that the battery can only be charged in conjunction with the main unit. That means moving 2 heavyish items to recharge, if using the solar panels, rather than just 1 at a time.
I can certainly recommend this product.
I initially bought a River 2 and Ecoflow’s 160 watt foldable solar panels as they were on offer on Amazon and found I could easily get 1.5 times the device capacity in a day so I was essentially wasting the power so I bought a Delta 2 and half way through the day I transfer what the River 2 has to the Delta 2. We now use the power to charge all of our iPads, phones, little lanterns etc and it’s giving us a noticeable saving each day on the electricity we use which is great. We use it for the hoover, lawn mower, and other household appliances thanks to the high output on the Delta 2.
I’ve just been away for the weekend and took the Delta 2 with us and sitting outside at night we had all our devices running off it and if we went out during the day it came with us and we were never without power. I love that it’s all “free” electricity when it’s charged from the solar panels.
Next step is to save up for higher capacity panels to get even more charge!
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
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.
We have a solar panel on our campervan to keep the leisure batteries charged but most of the time it has excess power available. I was originally looking at the River 2 but decided to be really useful whilst camping off grid it would be better to have a higher wattage output at 230v so went for the Delta 2.
I connected a standard cigar lighter socket to my mppt output and used the supplied cable to connect to the Delta 2 12volt input socket. I can fully charge the Delta 2 using this method without reverting to AC charging. The app functions well allowing you to control the charge rate from the solar output. Overall it has been performing very well at home using it to charge phones etc. We trialled using a 230 volt hairdryer for when we are off grid and it worked perfectly, obviously will be useful to run other 230 v appliances.
I am very pleased with it, build quality is excellent and it performs just expected.
I am using this recent purchase as a backup power station when I am charging my first power station with solar panels, which in optimum conditions can recharge the EcoFlow Delta 2 in approximately 4 to 5 hours, which is most impressive.
I enjoy the easy connectivity of this product, which I use regularly in my shed to power my 22 inch LED television, a 1000 watt kettle, Ipad, Laptop, mobile phone and some LED lights. I particularly like the illuminated read out display which is informative for the wattage used and the remaining power time span at one’s disposal.
The main impetus to buy the EcoFlow Delta 2 was the impressive quick charging, power capacity, ease of use, its versatility and the fact it’s fairly easy to carry. I have found this product to be very reliable and easy to control especially with the availability of the mobile app. I hope to buy a higher capacity EcoFlow power station or an extra battery to increase the capacity.
Overall I’m very pleased with my purchase, so much so I would highly recommend this first rate product.
We bought the Eco-flow Delta 2 power bank for our new camper van after much discussion about all the other power banks out there we felt this was the best and most suitable for our needs. I use a mobility scooter when out and about so if we want off grid ie, no electric on site I needed something that was powerful and versatile to charge the scooter battery. I can do this with the delta 2 as you can do 240v charging/3 pin plug. We also bought the solar panels (see my other review) so who can complain about green, environmentally friendly and free solar energy. It’s allowed me to be out and about with the van and know I can recharge my battery when needed.
I also wanted to be able to use my GHD hairdryer/straighteners, air fryer toaster etc and you just can’t beat the Delta 2 for this. The only niggle is the noise that comes from the power bank when in use which comes from the fans, we know it can’t be helped but it can be managed by time ie when you charge items. It would be nice to have a wireless charging place on top and covers over the different ports to prevent dust etc getting inside them, but you can’t have everything. Despite all that which is my personal would likes, this is an amazing piece of kit and would highly recommend buying it, you won’t be disappointed.
We wanted a leisure battery setup for our camper van/camping. The hope was to go fully electric (no gas, even for cooking). After research I found this product, specification wise it ticked all the boxes. We can run a kettle, induction hob, charge phones/ipads, lights, etc. from it, and it has done this faultlessly so far.
It is a big outlay money wise. However, if you price up all the separates you’d need to recreate a leisure battery setup in your van comparable to what this unit offers (i.e. batteries, DC-DC battery charger, MPPT, 1800w continuous inverter), you’d be spending twice the money. Additionally, all of that kit would be fixed into your van, whereas this unit is easily portable.
Not only do we now not have to buy gas bottle refills, but we also save money by not having an electric hook-up at any camp site we stay at. Given enough use, it could eventually pay for itself.
The controls and app are very easy to use and well developed. In all, a very good package, I highly recommend it.
I purchased the Ecoflow Delta 2 in July.
For the price range i do not think there is better, the build quality is fantastic and combined with Ecoflows superb app i can monitor charge or switch outputs from anywhere as well as locally via bluetooth if theres no wifi.
I only have two panels at present a 100w and 120w positioned on my shed but i was very surprised just how well the Delta 2s Mppt charge system utilised the solar power supplied (see pictures) i will be revising my panel to replace the 100w with maybe two 120w when i can but for now i am more then pleased with the results so far.
I use the Delta daily for charging two tablets, cordless large fans and various other household items but this unit will run my fridge and as a experiment it ran my 65in tv freesat box and wifi etc for over 3hrs and only dropped to 62% so any power outages will be covered.
Ecoflow cater for much larger systems but for my use this will cover mostly all my needs and lipo batteries it will last many years.
The power station arrived well packaged. Up and connected to the WiFi and app within minutes. Immediately had a firmware update which is positive as it implies EcoFlow support and update their products. Topped up charge using the supplied AC lead, when charging ataximum speed the fans sprung into action, however these were not excessively loud, the fans stop when the charging speed is reduced. The power station was bought mainly to power our camping adventures. I tried powering our F45 Alpicool fridge and it powered this for 24 hours using less than 25% of the battery so should last well over a weekend. I tried using it for higher loads powering a toaster then a kettle. I did this twice using only 6% battery which I would then topped up quickly using a portable 200w solar panel so great able to use free power. I think using in conjunction with our solar panel will allow us full off grid when camping, for days when the sun isn’t shining being able to top up quickly via AC or while driving is great. I would also like to use this with with EcoFlow Ppwerstream micro inverter with a couple of 400w panels will be able to cover my background AC usage at home with the Delta 2 toping up when the sun isn’t shining and then being charged when the sun is, I estimate this will take about 50% of my home electricity bill. Also Great to know the Delta 2 will power the essentials on case of a powercut. Overall I am extremely happy with purchase and awarding 5 stars. Well done EcoFlow.
So this is the second machine I have purchased (the other one I bought was the River 2 pro, when I say these are gateway machines I mean it as you’ll just want to buy more)
I am pleasantly surprised at how much this bad boy can do, I use this as part of a system, so this works great at charging all my bigger items, have even used it on my washing machine, tv, and PlayStation.
Granted for me, I had debated whether or not to get this one or the bigger version, and speaking with others on the matter as much as we love this machine, we feel like the bigger model is needed if say for instance if you use the power stream and want to catch all those lovely rays (for me not so much of an issue seeing as I have the river 2 pro as well)
Honestly, I can’t find any issues in regards to this machine and I’ve had it a while now and still going strong. Have found Ecoflow to be very helpful in general when I had some queries about a different product.
Yes, it is an investment in a way but I feel like you have to spend money to save money, especially with the cost of everything and Electric right now. I did deep-dive research before I made the leap but I’m glad that I did and I’d say trust me, these machines are worth it as currently with my set up, it’s roughly about 80p a day saved with my electricity yearly it really adds up (these are my own figures so would be different for others)
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
I bought this after buying the smaller capacity River Max 2, which didn’t power as many devices as I’d have liked, the Delta 2 however has worked with everything I’ve plugged into it Microwave, Air fryer, a treadmill, at full capacity it powers a 65 inch tv and a PlayStation 5 for 3.5- 4 hours.
The interface and app tell you how much power the devices you have plugged in are using and how long it will power them for & it’s been quite interesting seeing how much power some of the devices I thought were supposed to be energy saving were actually using
The biggest selling point for me was the 5 year warranty, with the current price of electricity it’d take you 3-4 years to make your money back so anything over this is a bonus, I’m currently saving up for the additional batteries and a higher capacity solar panel to test the solar charging speed, I’m happy with it so far but would need to see how many years it continues to work for to be fully content.
I had put off in the past getting one of these ‘power stations’ as I felt they were not quite ‘there’. Well I now feel they have finally got up to speed with this fantastic device! The number of different uses for the EcoFlow DELTA 2 is staggering! From workshop tool use, power supply backup, garden use to camping and motor homing this very clever device handles it all.
I like the Bluetooth communication between the app you can install on your phone and the DELTA 2. You can keep an eye on all of the ins and outs of power and more using the app.
Charging is a breeze with this Power Station with several options available including mains charging (very fast), Cigar socket while driving and Solar Panel (can use several different types) I actually charge mine while off grid in my motor home by plugging the car charging cigar cable plugged into a 12v cigar socket output from my leisure batteries which are in turn charged from my fixed solar panels on the roof, this works very well! When charging via 12v you can also choose charging input levels of 4, 6 and 8 amps so as to not over tax your 12v charging option.
If I ever get the chance to try their extension battery which you can purchase to plug into the main unit to increase the amount of capacity I will post an honest review, but sadly I can not at this time afford the purchase.
I would recommend this fantastic Power Station!
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.
Recharging it is easy, we have a 220 Ecoflow solar panel that can be put out for charging swiftly in sunlight, or charge via your normal 12v cigarette lighter socket when on the move. If on an EHU it’s very quick to recharge and you can set the input level so as not to trip the site electrics if need be.
We have just used it for a month away in Spain and Portugal and spent half our nights off grid in beautiful locations with the capacity to live as if on a site with full EHU. It can also power the fridge but probably for 6 hours max whilst receiving a good solar recharge from the panel at the same time. Two coffees on a Nespresso machine is about 7% of capacity, 25 minutes solar or driving and it’s back to full capacity.
Great bit of kit and portable to another Moho or easily lent to a friend as oppose to fixed lithium battery systems.
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.
Following further advances in the firmware it now allows you to set the on and off time so you can effectively set it to charge in cheap rate, this is a huge + to the product, this coupled with a few other enhancements in the firmware and some good dealings with customer service about the max battery charging problems i’ve uprated this to 4 stars.
We bought this and the extender battery to bring the capacity of energy close to 2kWh and the max boost of around 1.8kW. First off, it does this, the units are well built, well packaged and well presented, the display is clear and it’s obvious what is going on. The display while clear seems to have a problem when you first remove the protector, the screen distorts and is unreadable, after a short period of minutes this does revert back to readable again, bit of a shock on first peeling that off and thinking its broken though.
The power delivery has a significant loss vs what it draws – if you have it plugged to mains and using a load you can see there is a loss in the inversion / pass through of the power in the system, example: 500w load will see 550w pulling from the grid, a loss of about 10% for the battery to be in the loop. This wouldn’t be so bad if it was pulling from the battery and inverting the supply, but it’s not, this is where the units functionality starts to fall short.
The peak load can actually deliver up over 2kW which is really impressive and over its rated max, however it will trip out occasionally on this load (understandable), the problem with this behaviour is that it doesn’t let you know, so you have to guess at what happened, and sure enough, turn on ac delivery again and the plugged in device picks up where it left off. This leads me onto the software…
Would I buy it again? maybe, the advances in the firmware have made it so much more servicable and useful than before, it is still expensive.
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…….