I have a cabin on a piece of land I own that doesn't have electricity so I have been searching for something to power my CPAP (Resmed AirSense 11) instead of using a car battery with an inverter. I managed to get 8 days of usage out of the unit with the spare battery. I was using the AC power and did have the heated tube on along with the humidifier. Average usage per day was right at 11hrs. I have yet to see how long it can go using DC power and without the heated tube or humidifier, but I would assume it would go much further than 8 days. Hands down beyond pleased with this unit and the spare battery!

Bought this about a month and a half ago. Did a ton of research and comparison between the Anker 757 and this. Decided to go with Ecoflow for capacity and their ecosystem/app. Glad I did. Used it on a camping trip along with the glacier and had zero issues. Super quiet, sufficient power, charges super quickly, and holds charge.

I'm a professional drone pilot and was looking for ways to charge drone batteries on the go. Specially, my big drone DJI M300 requires a lot of power to charge batteries. When I tested the Delta 2 Max charging my batteries, I was impressed that the charger to see how much power it draws (750 W). I can easily charge the batteries up to three times with a single charge on the Delta 2 Max. I did another test with my house refrigerator which draw 85 W and can be powered up more than 20 hours with the Delta 2 Max. Super impressed with the power and quality of this.

I had just received my Delta 2 Max (D2M) a week before we had an unexpected and unexplained power outage. It was right at dinner time as food was going into the oven. Fortunately I had the D2M at the ready and routed a 20-amp power cord from the D2M to my transfer switch. We were able to run the 1700 watt toaster oven for approximately 45 minutes along with lights, computer, a refrigerator, and a freezer. This drained the battery in the D2M to about 30%. I had also recently purchased the EcoFlow Dual Fuel Smart Generator (DFSG) and hooked it up to the D2M to give it a test, too. It came on right at the 30% mark I had set in the EcoFlow app. It took about an hour to charge the battery with propane. The generator then shut itself off automatically when the battery was fully charged. Dinner was served and power eventually came back on a few hours later. Both the D2M and the DFSG performed as expected with no problems. I highly recommend this set up. Before I would have to run my gasoline generator continuously during an outage. Even though it has an ECO mode, it would still burn 3-4 gallons per day. With the DFSG and a Smart Extra Battery (SEB) I will likely only need to run the generator 2-3 hours per day, and that can be reduced with solar panels. NOTE: I prepared for this EcoFlow setup by drilling a hole in my exterior wall. This allows me to keep the D2M and SEB inside but connect them to the generator, transfer switch, and solar panels outside. The PVC conduit has caps when not in use.

I bought the Delta 2 Max about a month ago, when it was offered along with two free 110 watt portable solar panels. Right out of the box it was super easy to set up, and even on that cloudy day with one 110w panel connected, it was pulling in about 25w. Not much, I know, but it was still exciting! Realized pretty quickly I was going to need more panel capacity, so I ordered a 220w bi-facial. And then of course I would need more storage, so I ordered another battery! As it stands right now, when fully charged, the Max2 and the extra battery can run our main refrigerator, a 12v cooler (Iceco), and my complete computer setup (computer, four monitors, printer and scanner) for about a day and a half with no solar input whatsoever. We've been getting a lot of cloudy, rainy days, so solar input hasn't always been the greatest. On cloudy days with the 220 and two 110s in series, on average I'm pulling in about 150w for a max of 6 hours. On nice sunny days, I can max out at about 380 watts, with an average of about 330 for 6 or 7 hours. This is usually enough to keep all of the above running, but still draining the battery a bit. So...I see some bigger panels in my future - probably two 400W rigid panels. This will double my input capacity, allowing for a total recharge in my short window of sunlight. Note: we actually did lose power here for about 6 hours overnight one night when I only had about 30% capacity left in the batteries, and the refrigerator kept right on going, no problem! Charging with 110 is super-quick - usually 2 hours or so. Just for fun, I hooked up my son's gas-powered generator and charged it off of that unit's 110 - again with no problems. I'm trying to rely totally on solar now, so given the poor weather we're having, and until I can upgrade my input with two 400w rigid panels, I typically have to give it a full day and a half with nothing connected before I can hook up the refrig, cooler and computers again. Then run on batteries for a day and a half. etc. Overall, great product. Bought it with the intention of using in a small squaredrop camper I'm building, and it would of course handle that task with absolutely no problem. Might buy the second spare battery in the future, just to see how many regularly-running appliances I can switch over to solar on an ongoing basis. In the next few years, am planning to build a new off-grid-as-much-as-possible home, and will definitely looking to EcoFlow to power it!

Thanks for the good service Ecoflow ; great solar generator . I'm Steve Day , I'm the one using using your product . THANKS Ecoflow team members ; your new friend Steve Day

Best portable generator. Very light weight and easy to use. We use our delta 2 max in camping trip, festival, backyard bbq and many other occasions. Our friends got one too and theirs integrated with our delta 2 max seemlessly.

Please as a suggestion maybe advise this solar panel will need a cable to hook up to the EcoFlow. Can't wait to actually get it in use. But will have to wait to get the cable adapter in the mail.

The EcoFlow Delta 2 Max is all I hoped it would be to power my home office should the power go out. The technology seems second to none. I also bought the 400W solar panel. The two combined give me the power needed to run the essentials.

Haven't used it yet but it looks very well made. When winter comes I'm sure we'll be having power cuts. No running to the gas station anymore. Thanks EcoFlow!