Portable Power Station DELTA 2 Max, 2400W LFP Solar Generator, Full Charge in 1 Hr, 2048Wh Solar Powered Generator for Home Backup(Solar Panel Optional)

It's a great product for what it's designed to do: act as a nearly silent standby power source. It's powerful and well-built, but has too many features for it to be used as I intended. I purchased this mainly as an EPS backup for our sump pump. After using it for one day, I can say with a high level of certainty that it's not a good idea. 1) It does NOT act as a simple pass-through. While your grid power is ON, if anything goes wrong with the EcoFlow's configuration, or inverter failure, misc. electronic failure, etc., it will no longer pass the power through to your pump. Grid power ON + EcoFlow issues = flooded basement. 2) The unit has a manual power switch. Again, when the unit is powered off, power is not passed through. 3) The unit has an AC toggle switch (also in the app). If the AC is toggled OFF, power is not passed through. 4) There's a device timeout. If power isn't drawn during the timeout, then the EcoFlow will time out and not pass power through. It can be set to "Never Timeout". 5) There's an AC timeout. If AC power isn't drawn during the timeout, then the EcoFlow will time out and not pass power through. It can be set to "Never Timeout". 6) Firmware upgrades will cause the unit to revert to the default settings. There's a notice indicating this when you upgrade the firmware. This morning, I upgraded the firmware. After the upgrade, the AC was toggled OFF. OFF is the default. I recognized this within 30 minutes of the firmware upgrade (the sump pit was nearly full). I toggled the AC back ON, then the pump ran. What if they decide to push a firmware upgrade out automatically? I believe the timeouts were also reset to default, which is less than "Never Timeout". The question I asked myself was, "How reliable is our grid power?" My answer is about 99.999%. In 15 years, we've been without power for about 12 hours total. The final question is: how reliable is the EcoFlow? Given the five points above, it's certainly under 99.999%. I'm plugging the pump back into the wall.

This is enough to power a house-sized furnace blower for multiple hours (gas furnace, not electric, of course). We permanently keep it plugged in to our vaction house furnace to provide an automatic USB-like cutover when we are gone, to keep the house from freezing during shorter power outages. When the power is on, it powers straight through this unit to the furnace, without invovling the battery. It works great for that purpose; just be sure to set the AC output to "always on". Although it would only run the furnace continuously for 3 hours when the power goes out, the furnace does not run continuosly so this battery runs our gas furnace for about 7 hours in the winter keeping the temp at 70 when it is freezing outside; would probably run much longer if you were keeping the temp at 50. The free iPhone app that comes with it, allows us to see what is happening remotely when there is a power outage at an empty vacation home. Of course, you need to put another smaller version of this item on your WiFi system, to use like a USB on steroids, so it stays up and allows you to remotely monitor the house while the power is out. We bought the solar panels for backup, but we have not plugged them in to try them out yet. UPDATE: SEVERAL MONTHS AND POWER OUTAGES LATER: I read the review above, by "curt", complaining that this unit is not reliable. I would suggest that his complaints are "operator error". If you read the directions thoroughly (they are very good) you find out that most of the features time out if you do not set each one up to never time out. And, they do ask you every time before they do a software update and require an affirmative "yes" to begin (I never do the update remotely so I can check things out in person) and they do warn you when you begin a software update that you should re-set the features after the update. The default "timeout" on each output, was to preserve battery life if you are using it as a battery and not a USB. But the control software on your iPhone is very good, and if you READ THE INSTRUCTIONS you will know to toggle on all of the "never shut off" toggles. I tested this on my furnace many times by pulling the power cord when the furnace was running. Not even a hiccup. Also, we woke up one morning at the mountain home with news that a huge pine tree feel on a power line over night in the cold of winter. We didn't know, because the furnace switched over to this battery backup without any intervention, and we were still toasty warm in the morning although we had no lights. It kept us with heat long enough for the power to come back on later in the day. Another time, there was a scheduled power outage that was supposed to last for the whole day. We had to leave in the middle of the day before power was restored. We were able to log on remotely to this unit, to find out when power was restored later in the day (it shows you input and output wattage; when the input wattage is restored you know that you have power again). Read the instrutions. Du'oh.

Runs 55inch tv, dishwasher,washer/dryer, fridge, lamps, window AC units and all for free from solar panels. High use gets 12 to 16 hours of usage before multiple ways to recharge, solar, wall AC, car lighter plug etc.

I just received the DELTA 2 Max, and right out of the box it made a strong impression. The charging speed is the first thing that stood out to me. When I plugged it in for the first time, the percentage jumped so quickly that I actually double-checked the display. Getting to 80% in under an hour is not an exaggeration — it really does it. The overall build quality feels premium. The LFP battery chemistry was a major reason I chose this model, and even as a new owner, you can tell it’s designed for long-term durability. It gives a sense of confidence that you’re not buying something that will fade out after a handful of uses. I immediately tested it with several of my own devices — my computer setup, my monitor, some studio gear, a few household items — and it handled everything without even blinking. Seeing it push out clean power to multiple things at once reassures you that the 2400W rating is not just theory. The number of outlets also makes it practical; I never felt limited or cramped trying to plug in several items at the same time. The quiet operation is another pleasant surprise. When it’s charging, it’s barely noticeable. I had it sitting a few feet away, and it never became a distraction. The expandable capacity is also a smart feature. Even though I haven’t added extra batteries yet, just knowing that I can turn this into a much larger backup system if needed is a big plus. Overall, as a new owner, everything about this unit feels solid, fast, thoughtfully designed, and genuinely capable. It delivers exactly what I hoped for when I ordered it.

I recently acquired the EF ECOFLOW Portable Power Station DELTA 2 Max and it has been nothing short of a game-changer for my sailboat maintenance and outdoor adventures. As an individual who frequently works on a sailboat, the need for a reliable, robust power source is paramount, and this power station has exceeded all my expectations. Firstly, its impressive 2400W output and 2048Wh capacity have been instrumental in running a variety of equipment. From power tools essential for boat repairs to lighting that extends my working hours, it handles everything with ease. Moreover, I’ve even used it to power a small heater, which speaks volumes about its versatility and power. The rapid charging feature is another highlight. Being able to fully charge the power station in just about an hour is incredible, especially when time is of the essence. This feature has saved me a lot of time and hassle, allowing me to focus more on my work and less on power management. Its portability is a huge advantage. Despite its high power output, it’s compact enough to be carried around easily, which is crucial for someone who is constantly moving around on a sailboat or outdoors. Lastly, the durability and build quality are top-notch, ensuring that this power station can withstand the challenging marine environment. It feels robust and reliable, which is essential for any equipment used in such settings. In conclusion, the EF ECOFLOW Portable Power Station DELTA 2 Max is an outstanding product that I highly recommend. It’s a perfect fit for anyone in need of a powerful, fast-charging, and durable power source for outdoor activities or marine use. A solid 5-star rating from me!

I have several ecoflo products they all work well and save me electric at my house, power my motor home and multiple tools, space heater and more. Very useful.

I purchased this item almost 3 years ago and it performed excellently until about a month ago when it failed. Once diagnosed by the EcoFlow support team they arranged for pickup and replacement under warranty. I found their service department to be very responsive and flexible. As an aside, I also have two auxiliary Ecoflow batteries in this system as well as two solar panels from them. All are excellently designed, well-priced and reliable.

So 1, like 2 million other Houston residents, lost power for several days after our most recent hurricane. I thought I was covered with my delta 2 max and dual fuel smart generator. I was wrong. I spent about 75% of the blackout drenched in sweat fighting to get the "smart" generator to cooperate with the delta 2 max. I had constant issues. The main problem being that the generator would rev up like it was about to send power to the delta but then zeroing out seconds later while still revving as if it was sending power. Constant 520 codes among others. It only worked about 1 of every 10 attempts. The "smart" feature that's supposed to run the dual fuel to charge the delta when it drops below a certain percentage worked 1 time in 5 days without power. Meaning waking up in the middle of the night to fight with it for an hour before I could get it to send any power and usually resulting only a partial charge before I had to fight it again in 100 degree 100% humidity weather. So completely disappointed in what was a major investment for myself and my family. Step in EcoFlow customer service. I called in the middle of the blackout on a particularly frustrating day and was shocked there was no one I could speak to that had any technical knowledge of the system. All the support agents don't even scratch the surface of technical support beyond checking for frayed wires. Extremely disappointing. I was told they'd escalate and send an email so I could enter product info and they'd have someone from technical support call and help me out with diagnosing the issue and warranty support. 3 full days later and nothing. Called back and just got off the phone with them and nothing has changed. No new information. No explanation, no timetable, nothing other than the same useless customer support experience I went through the first time. It's unbelievable that you can invest so much money into an emergency power system and receive zero technical support in a timely manner especially during a time of crisis. I'm currently still waiting on a callback. Think long and hard before you invest into this ecosystem. Their support is nonexistent in my experience. One of the worst I've ever dealt with.

Muy buen producto cumple lo que ofrece lo recomiendo ampliamente, justo para los apagones de energía que aveces son frecuentes.

I bought the ECOFLOW Portable Power Station DELTA 2 Max to use as a backup for my home and for camping trips. I was amazed by the large capacity, the fast dual charging, and the multiple output ports. It can power almost everything I need, from my fridge to my laptop. It is also very easy to use and monitor with the EcoFlow app. The power station is very user-friendly and convenient. It has a clear LCD screen that shows the input and output power, the battery level, and the remaining time. It also has an EcoFlow app that allows me to control and monitor the power station from my phone. The app is very easy to use and intuitive. It connects to the power station via Bluetooth or Wi-Fi and shows me real-time data and alerts. I can also update the firmware and access customer support through the app. The product came in a well-packaged box with all the accessories and manuals included. The packaging was sturdy and secure, and it protected the power station from any damage during shipping. The box also had a handle for easy lifting and moving. Overall, I am very happy with my purchase of the EcoFlow Delta Max. It is a powerful, reliable, and versatile portable power station that meets all my needs. It is worth the money.

I bought the Delta 2 Max as a start to having a solution to keep the necessities in my home running during outages. Since I bought it, I haven't had any outages, but I did test it with several of my home appliances. It ran my mini-fridge (80W) for 53 hours, and my big stand-up freezer (130W) for 26 hours. That's about double what you might calculate (and what the Ecoflow says on the screen when you first plug the appliances in), but that's because fridges and freezers don't have to run constantly - they kick in and out to keep cool as needed. Next I'm going to test it on my regular fridge, but I assume that will be similar to the freezer. That type of runtime will probably do me for most of the outages we get around here! Of course, if I tried to run all of these appliances at the same time, the Delta 2 Max wouldn't last long, so I'll have to try to gauge how long I think the outage is going to be, and prioritize what to power! I am also considering using the Delta 2 Max as an EPS - keeping the fridge plugged into it, so that when the power goes out I don't have to worry about my food getting spoiled if I'm not home. I hope to add a Smart Generator and/or maybe some solar panels to my set-up so that I can keep the Delta 2 Max charged during an extended outage. I found the device easy to set up, easy to use, and it seems to work very well. I love the app for "geeking out" on power draws and things like that. After draining it on my appliance tests, it charged up again ridiculously fast for such a big battery. That's quite amazing. Also, it is much lighter than its competitors with similar power, which is important for me as I'm a smaller person. Even so, I find it difficult to move around at about 50 lbs. I contacted customer support with a question and they responded right away, but it was just a quick, "We're sending your email on to the correct department". It took 6 days to get an actual answer. So, that's not super responsive, but at least they did get back to me. I guess that might be a symptom of dealing with a smaller company who doesn't have a large team dedicated to answering questions, although I'm actually not sure exactly how big the company is. All in all, I'm very happy with the Delta 2 Max, and I'm almost looking forward to my first winter outage this year so I can pat myself on the back for being prepared!

I bought the Ecoflow Delta 2 Max as a backup power source for my home in case of a power outage. With our electrical grid going down ever more frequently, this is a smart buy for anyone looking to power essentials during a blackout. I can report that after tested it by running my refrigerator, freezer and a few lights circuits in the house, a am really impressed with it's performance. The Delta Max has a really cool display that shows the input, output and remaining battery life, which is super useful for monitoring the power usage. I recently purchased a few rigid solar panels and I can report can charge by adding these I can run my essential appliances indefinitely using solar power. Since I also use this unit in my camper van, I was also very impressed with the quietness of the fans while under load. This is something Ecoflow has addressed from the outgoing model. New battery chemistry also means, this is a worthwhile long term solution. The Ecoflow Delta 2 Max is high-quality and high-performance power station that is a fantastic backup solution for any home owner! Highly recommended. The only thing I would like to see is a bit more automation over when the unit charges from the grid...for example when there is a storm in the forecast. I'm sure this will eventually come because they are constantly adding new feature to the app.

The system works great, the switchover to battery is not even noticeable. Battery life is great, I use a kettle, 700w microwave and a toaster oven. It can easily operate any two of the three mentioned and lasts a few days before recharging. The only downside I have is there is no way to prevent the use of the plug power when charging. It overloads the power outlet if I'm charging over 500w and shuts down all outputs from the Ecoflow. There should be a a software switch to stop the power flow through from the house outlet and let the battery inverter power the outputs. I know there are ways around this like charging through the solar/car input but that involves buying another charger unit.