I considered the new Bluetti AC500/B300S solar generator and the new EchoFlow Delta 2 portable power station. Both are LIFePO4 chemistry offering good capacity, abundant life cycles and other features. I eventually settled on the EchoFlow and although have not owned it for very long, I have been very pleased with its performance. Several other reviewers have echoed my own thoughts and so I will not repeat them, but my first impressions included that the unit was much smaller and lighter than expected, and that it charged up (from the grid) in no time. Future experiments will include to run my refrigerator, run a portable air conditioner, and so some solar charging (with my two EF 220W solar panels. Will add future content, if allowed. We live in the New Orleans area, so will no doubt have plenty of opportunities to field test our Delta 2. We are also considering buying a second unit in the near future.

As a new homeowner I have been concerned with being at the mercy of the local utilities during inclement weather. Within a couple of months of receiving my Delta 2 (Delta Burke) we had rolling blackouts. Delta performed just as she should. I decided on this unit because I have gas cooking and a gas fireplace so those are usually always operational. Delta B powered my coffee maker, router, tv, and Christmas tree quietly and flawlessly during the blackout. I am currently in the middle of an ice storm and knowing Delta is charged and ready should the power go out gives me tremendous peace of mind.

Bought the Delta 2 and the Delta 2nd battery to use as emergency back up for the house... enough to keep the Fridge and a few necessities running... also have two of the 220w solar panels to keep it charged... the fast recharge time is a great feature... in testing the batteries will keep things running for just under 24 hours.

While dry camping with Rv was able to plug in directly into the Delta 2 for power to make coffee in the mornings for wife and myself for 5 days without recharging the Delta 2. Came home and recharged the Delta 2 with a 120v outlet now ready for the next Rv trip.

I purchased the Delta 2 combo with the 220 watt bi-facial solar panel a few months ago and so far it has worked well for all my needs. I chose the Delta 2 because of its lighter weight and higher number of performance cycles over the original Delta that boasts a higher charge efficiency. It got its first workout as an EPS to back up the bilge-heater I have in an older boat to protect the engines from freezing. It provided good peace of mind during the Bomb Cyclone back in December, 2022 when temperatures plunged into the single digits where we live. There is a feature on the EcoFlow App under Lab Features that does need to be set to “AC always on” to use effectively. Currently the Delta 2 is earning its keep, building out a small cabin that will be off the grid. Its first day of use was to provide lighting for installing the floor and running a power jig saw to cut the flooring for an afternoon. The Delta 2 was still at 85% battery once we got done five hours later. At this point, I think it will see lots of use!

I'm a prepper and into camping and this has been one of the best additions to all my stores and gear. I watched probably 20-30 videos on Ecoflow backups and chose the Delta 2 with extra battery because it was top rated and in my price range. I look forward to be able to afford the portable solar panels to complement this system...just not in the budget right now but I will get them. This thing is so cool it provides power to almost anything in my home as long as you keep track of watt hours...which it displays usage and time left. The accompanying app on smart phone is awesome. Screens are vibrant and easily visible. This is very awesome product and will get the larger home version if finances allow.

I have several Power Stations, even some I built myself, but nothing come close to this. EcoFlow has really outdone themselves. The feature rich unit is strong, powerful, yet extremely lightweight and even expandable. I bought the Extra Battery as well. The ease of use and portability make this my favorite hands down. This unit packs a ton of power and features into an really small package. The WiFi feature allows me to keep an eye on it from anywhere, Just like my off grid solar for my home. I can easily look to see the SOC, loads, solar input and many settings. The Delta 2 along with the Extra Battery are the best companions for off grid RV’ing, parties, worksites, power outages, emergencies and so much more. I reach for the Delta 2 and its extra battery when I need power to go from now on. I have portable solar panels to keep it topped off. This is by far my favorite power station, and I highly recommend it to anyone looking for one. It gets 5 stars from me!

I bought this a mont ago and I'm so happy I did it. The product lasts so long, I didn't expect it was this good. I feel extremely succesfull by chosing this product. I know Ecoflow has a bright future ahead compared to their competitors. As someone from the industry, their ecosystem is modern, well built, and bug free.

Having a RiverMax and knowing EcoFlow, I expected a lot...and my expectations were exceeded. Made my purchase based on my good experience with EcoFlow and the specs of the Delta2. When it arrived I was impressed by how quickly it went from 30% to 100% charge. Then once charged, I couldn't find a device it wouldn't power. And once I add the extra battery, I will have more confidence that the Delta2 can get me through the next power outage. Still like the River, but am extremely pleased I added the Delta2.

I bought the Delta 2 primarily as a backup power source for my refrigerator during any short power outages this winter. I can also use it as a backup power supply for my home office or a small freezer if needed. As a test, I hooked up a laptop with additional 21" and 32" monitors while working today. I also periodically ran a 15-watt lamp, a second desktop computer, and charged some devices. The Delta 2 provided exactly 10 hours of power. According to the Kill-A-Watt P3 power meter it was approximately 780 watt hours out of the listed 1024 for an overall efficiency of 76.2%. To be honest I was hoping for more, but I do plan on picking up the extra battery. However, the basic amount should be enough to get the refrigerator and maybe a small chest freezer through the night during a short power outage. For solar charging I picked up two 160-watt EcoFlow panels. I set the two panels up on my back porch and tracked the sun from mid-morning to mid-afternoon. The two panels generated a maximum of 250 watts of input with clear skies but noticeable wildfire smoke. I was able to bring the battery up from 30% to 80% before the trees blocked out the sun. Solar panel efficiency dropped off quickly with any shading. I experimented with parallel and series wiring as shown in the manual. I found I got a little more wattage out of the series method. When I looked at the specs I think that was because in parallel I was exceeding the 15 watt maximum input and it was throttled down by the control system. Adding a third panel would max out the system on volts and watts, and it might be worth considering for winter charging with fewer hours of less intense sunlight. These three panels could only be hooked up in series. AC charging was fast! I actually tempered the charging to 800 watts maximum instead of the standard 1200 watts to reduce the amperage, but even with input reduced by one third a full charge from 0% to 100% took less than 2 hours. The fan runs the entire time the unit is charging. It is noticeable but not loud. Overall I feel this is a great item to have on standby for short power outages. It can power small appliances and a computer for a significant amount of time when needed. Set up is fast and easy. The 160-watt solar panels are fairly lightweight and appear to be more durable than glass panels. The manual should do a better job of explaining the differences between parallel and series options (that might be a good feature for the app). The Delta 2 is manageable in size and weight and would even fit in an RV for mobile power needs.