EF ECOFLOW Solar Generators, DELTA 2 Portable Power Station with 2PCS 100W 12V Solar Panels, 1024Wh LFP Battery, Fast Charging, Power Station for Home Backup, Camping&RVs

I read a lot of reviews and watched many videos before buying the Ecoflow Delta2. My main use for this Delta2 is for overnight camping trips and use as a back-up power in case of black-out conditions to run some equipment like Refrigerator and be able to heat food using the microwave. Delta2 doesn't have the battery capacity like Delta Pro but with a good solar panel it can definitely come handy when required. One can always add an additional battery that again works seamlessly to extend the battery capacity or buy the Ecoflow Smart Generator. I was debating between Bluetti EB70s and Ecofow Delta2. The reason I bought Delta 2 over Bluetti was the battery capacity. Delta 2 provides 1024WH as compared to the 716WH from the EB70s. Delta 2 met the power requirements that I was looking for. I could not find any offering by Bluetti in the range of 1000WH capacity. Delta 2 was of course more expensive than Bluetti but the surge power (also called X-BOOST by Ecoflow) is really high. So running a microwave for a short time or a coffee machine at a campsite or picnic is not an issue at all. I bought a combo pack (Delta 2 and solar panel). More about this combo later in the review. The other reason was the 5 year warranty that comes with the Ecoflow Delta2 vs 2 years for Bluetti. Some models from Bluetti do offer 4 years but were expensive for my use. Below are a few things I like about Ecoflow Delta2 after using it for sometime. 1) Construction - This is a solid built product. The bottom edges have these rubber bumpers for extra protection. The form factor is designed well to fit in the car. I hope the handles were not protruding out as they are now and were more integrated into the main box. The box is strong and one can easily put heavy items on the top without any issues. With the LFP battery and 3000 battery cycles, the Delta 2 will last forever. 2) Display - It's big and clear. Very easy to read even on a bright day. All the connections that are turned on are shown on the display even when a load is not connected but for USB only when a load is connected, the icon is displayed. Not sure why only the USB icon behaves like that. Not an issue at all but just wondering why a different behavior as compared to other connections. 3) App and Connectivity - The phone app works great and it's very easy to use. There are so many options that you can set via the app. Connecting the Delta 2 to the app was a breeze. It connects to WiFi without any issue and also to bluetooth. The app shows correct data 99.9% of the time. Once in a while you have to refresh (close/open) the app to get the latest data. It is very rare but I did notice it. When the WiFi is available, the Delta 2 connects via WiFi. If there is no WiFi connection, it automatically switches to Bluetooth connection. The connection is just seamless and you are always connected to the Delta 2. 4) Charging - Delta 2 can charge at a whopping 1200W to be ready from 0% to 100% in about just 80 minutes. The fans do kick-in to dissipate all the heat generated during this fast charging. I personally charge the unit at 500 W with fan running but much less noisier and may be better for the battery life. The solar charging can go up to 500 W. I don't have enough solar panels to check that max limit but this can be a really handy feature during a blackout conditions or with limited hours of sun during camping. One can charge the battery before leaving camping or any other work. Charge while driving from the 12V DC outlet in the car (Also known as the Cigarette lighter port) and the battery will be 100% when you reach your camp/work site. 5) Output Connections - There are more than enough connections that one can use, in my view. With a massive 1800 W peak capacity and 2700 W of surge capacity, I think you can run almost any home appliance with this Delta 2. The provided ports like USB A, USB C, Power Outlets and 12 V (Car type) are good to power any device you may have. Now coming to the combo I got. I bought the combo of Delta 2 and Solar Panels that were rigid. I was not happy with the size and format of rigid panels so I reached the Ecoflow support team. Even though I made that choice and now wanted to get portable panels, the Ecoflow team worked with me. The support team was amazing with quick responses and answering all the questions I had. It was good to see Ecoflow believes in good customer service that still cares about their customers. One of the best customer service teams I have worked with. One option that I would like Ecoflow to add will be to set the discharging and charging percentages even when connected to the power outlet. I would like to connect a solar panel for charging and connect my garage refrigerator to Delta 2 and use the battery power. If the battery falls below a certain level (let's say 30%) it can charge via the power outlet, else the refrigerator can keep running via the solar power. This option is provided when you connect a Ecoflow smart generator to Delta 2 but not when connected to a power outlet. I hope Ecoflow will implement this feature in the future software update.

The Delta 3 is nice! I purchased this unit in March 2025, and added it to my growing EcoFlow collection. I have a few River series units and a Delta 2 with an extra battery. The Delta 3 arrived quickly, and setup was a breeze. EcoFlow offers an optional, free-to-use mobile app, which I have, and it recognized the device immediately after start up. The D3 works straight out of the box too, so if the mobile app isn’t your thing, it works just fine without it. Since it’s a 3rd generation unit, the Delta 3 has a lot of new features available in the app that my first and second generation units do not. I particularly like the remote shut-off feature, where I can go in the app and turn off the device in case I forget. Another new-to-me feature is the real-time power usage and history. Since I recharge the unit using solar, it’s great to see the history and daily solar power generated by the connected panel. I also like that all of the AC and USB ports are on the front of the unit. This is great since I store the unit on a heavy-duty shelf against a wall with my other devices. The Delta 3 is great, however I do have some small critiques. I did get two error codes during my first week of use. The first day I connected solar, I plugged the panel (EcoFlow Flexible 100W) in the night before. The next day, I woke up to error code 303, which is likely related to the inverter based on codes for previous generation Delta units. The mobile app explained the error and offered troubleshooting instructions right away. After the reboot, the device worked without issue and I haven’t see that error since. On a different day, after charging the D3 via AC power, I briefly encountered error 471 when unplugging the power cord from the outlet. It’s a quick error that appears on the D3 screen but doesn’t last long enough for the mobile app to show any information. I’m not sure if it’s actually an error or just a power blip when unplugging. It doesn’t happen every time, but I have seen it a few times since March. In general, I’m not worried about these two errors. The Delta 3 comes with a 5-year warranty, so if I have any issues in the future, I’ll reach out to Customer Service for support. Overall, I think the Delta 3 is a solid addition to the Delta series line up. If you’re new to EcoFlow and considering this unit, it’s a great one to start with. Note I said “start with”, because you’ll love it enough that you’ll want to add more devices to your collection! Definitely look for a Daily or Lightning Deal and EcoFlow coupon checkboxes on the item listing to get the best price. Not to be confused with the Delta 3 Plus, which is another great unit, the Delta 3 also comes in a 1500Wh capacity in either the black or silver finish. If you are trying to decide between the Delta 3 1024Wh unit (this one I’ve reviewed) and the Delta 3 1500Wh unit for a similar price, definite go for the larger battery. Whatever you choose, don’t forget to register your unit for warranty and *actively read the user manual* to learn how use and maintain your device for many years to come. Enjoy!

These power stations have really come a long way. You can now set schedules to turn them on and off. Turn on the Ecoflow Delta 3 Classic during peak hours when electricity is most expensive then off during off-peak hours all from the app! You can monitor usage and even get storm warnings too. With all these new features, it's only a matter of time before we start calling them "smart" stations! The feature that caught my attention the most is the near-instant (<10ms) switchover when the power goes out essentially making the Ecoflow Delta 3 Classic a viable UPS backup power source. It gave me the idea to hook this power station up between my fridge and my van. Under normal conditions, the fridge would draw power from the van itself. But now if I turn off the van for any reason, the power station automatically kicks and continues to power the fridge! And when I turn the van back on, it again automatically switches back to drawing power from the van! I no longer have to get into the trunk where the fridge is and switch out the cables manually. It is all seamless and truly hands-off now! One less thing to worry about on my road trips! Beyond that, I really have to give props to Ecoflow. Right from the unboxing you can tell that you are getting a quality product. The tape sealing the box that holds the charging cable has a small flap at the edge to make it easier for you to peel it off. The charging cable itself is hefty and clearly labeled. The bag that holds the instruction manual is not made of just any cheap plastic but the kind of plastic that has that soft velvety touch to it. Even the foam inside the box is of high quality. It is soft, it doesn't make that grating noise when you handle it, and it doesn't break apart and have little bits flying all over the place. The Ecoflow Delta 3 Classic itself has two nice-sized handles at the top on each side making it much easier to lift--especially in tight spots like, say, the back of a minivan. Two generous non-skid pads cover the bottom of the power station. On the input side, there is a cover that swings up to open and that can be tucked right into the power station itself and out of the way. Also, the two three-pronged outlets are oriented on their sides to flare outward so that whatever you plug into them won't get in each other's way. It's just genuine thoughtful designs throughout. All of this might seem trivial at first, but when taken altogether, it shows that Ecoflow is a company that cares. They stand behind their products and you can rest assure that you are getting great value for your money.

Outstanding Portable Power Solution for Home Backup and Beyond! I recently purchased the EF ECOFLOW DELTA 2 Portable Power Station, and it has truly exceeded my expectations. With its massive 1024Wh LiFePO4 (LFP) battery, I feel confident that I have reliable power during outages or outdoor adventures. The 1800W AC output and 100W USB-C ports offer versatile charging options for a variety of devices, from home electronics to laptops and even small appliances. What I really appreciate is its fast recharge capability and compatibility with solar panels—perfect for eco-conscious users looking for sustainability. The build quality is solid, and it's lightweight enough for easy portability. Whether it's used as a backup power source at home, during camping trips, or for emergency situations, the DELTA 2 delivers consistent, clean energy when I need it most.

Background: Long time Ecoflow customer going back to Delta Pro pre-launch days. Have a few other of the Delta product line including Delta Pro, Delta Pro Extra Battery, Delta Max, Delta 2 Max, Delta 2 (950). Promoted the product through the family and everybody has atleast one in the Delta series. TL:DR: The Delta 2 has a robust inverter for it's weight class. Capacity can be expanded if additional runtime is needed. Solar panel is also a solid product, getting high 80% efficiency in mid winter. Will update again during sunnier weather. For the size and weight a solid product pair for mobility. The Good Delta 2: Solid product with impressive product warranty, robust battery chemistry, and monster of an inverter for the weight package. Any 5-15P corded appliance you can throw at it should be able to run with ease with the only concerning point being runtime depending on the wattage drawn which can be supplemented if I get the Delta 2 extra battery. The Good 220w Solar Panel: Solar panel yielding 80% of rated output in winter weather, looking forward to seeing what this thing can do during the summer with clearer skies and longer days. The Not a Fan Of: Super minor and personal preference but not particularly keep on the elastic bands for the 220w. Have other mobile solar panels that are less temperamental and prone to kick back. Usage Scenario in photo: No need to worry about where an outlet is for a backyard cook out. Plugged in a electric fryer (~1200w) only used for 30 mins, ICECO G20 (all day), and the ECOFLOW Multifunctional Outdoor Camping Light. Delta 2 Unit able to handle all 3 devices and with the additional charging from the panels had enough to keep lights on through the night.

After I bought and tried EcoFlow's excellent Delta Pro not too long ago for our vacation home, I became a fan of the company's products. I previously was a firm fan of Goal Zero and Jackery and was wowed by the Delta Pro's features. I was curious to see how the Delta 3 would do. The Delta 3’s 1,024Wh battery capacity — how long something can run for — puts it right in direct competition with the Goal Zero Yeti 1000x and Yeti 1000 Core, Jackery Explorer 1000, and its own predecessor, the EcoFlow Delta 2 — but with one major difference. Instead of using Nickel Manganese Cobalt (NMC), the Delta 3 uses Lithium Iron Phosphate (LiFePO4) like its more powerful Delta Pro sibling. There are significant differences between both Lithium-ion (Li-ion) battery chemistries that I will detail later. Some tips to keep in mind while reading my review: - How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). - EcoFlow, Goal Zero, and Jackery power stations can be used while simultaneously charging themselves. Sweet Spot: The 1000Wh battery capacity hits the sweet spot for many consumers, including this author, who are looking for the right balance of power and portability. But when it comes to home integration, the more Watt-hours a battery ecosystem offers, the longer one can power a home for during a blackout. BATTERY TECHNOLOGY There has been a lot of debate on whether Nickel Manganese Cobalt (NMC) or Lithium Iron Phosphate (LiFePO4) is better. Both are Lithium-ion batteries. Goal Zero and Jackery used NMC for a long time and only recently switched to LiFePO4 (what EcoFlow and Bluetti had been using for some time). Why use LiFePO4 today? They hold some important advantages over NMC: - Safer, less volatile, and thus cheaper to manufacture - Charge cycle: 2000-5000 (10+ years) -- NMC: 20-25% capacity loss after every 500 cycle (6-10 years for up to 2000 cycles, after which capacity is vastly diminished) -- EcoFlow claims 3500 cycles before dropping to 80% of original capacity and 6500 to 50%. Each year, this number increases quite a bit as battery technology improves further - Usable in more extreme temperatures (-4F/-20C to 176F/80C). NMC: only 140F/60C max -- Check with manufacturer for your battery to be sure - Holds 350-day charge. NMC: 300 CAUTION: Lithium-ion batteries do NOT like to remain discharged at 0% for prolonged periods of time. If you let your battery stay at 0% for too long, you may not be able to charge it again without specialized equipment. CONTINUOUS VS PEAK OUTPUT It is important to understand the difference between Watts and Watt-Hours. How much power is used or produced is measured in Watts, and how much energy a battery can store is calculated in Watt-Hours. See the “Calculations” section below for more details. How much energy a battery can store is measured in Wh (Watt-hours), and how much power is used or produced in W (Watts). - AC Inverter: Converts battery (DC) power into AC -- Delta 3 provides 1,800W continuous output with a 2,600W peak (up to 3,600W with EF's "X-Boost") - Peak/Surge (Starting): Nearly every device initially draws extra power to turn on. The highest amount it pulls is the Peak. As long as that number is below 2,600W, it can be STARTED. Examples… -- Turns on OK (PEAK under 2,600W): --- Freezer starts at 400W (peak), runs at 150W once on -- Will NOT turn on (PEAK over 2,600W): --- Home AC starts at 4,000W (peak), runs at 1,000W once on Most devices power on at a higher (Peak) wattage than when they are already on (Continuous). Therefore, if its peak exceeds the power station's max, it may not be able to start - Continuous Output (Running): Once devices are on, as long as they keep drawing less than 1,800W total, they will stay ON until the battery runs out -- CONTINUES running (under 1,800W) --- 100W TV + 60W laptop = 160W -- COULD STOP running (over 1,800W) --- Temporary overdrawing beyond 1,800W for a few seconds is okay. A quality BMS will protectively shut down the battery if the surge does not end after a while. Regularly going over for a prolonged time can ruin the battery in the long run --- 1,000W machine (2,100W peak) + 300W appliance (500W peak) + 700W appliance (900W peak) = 2,000W. Probably will stay on for a short period ---- Add 1,000W mower (1,400W peak) = 3,000W. Battery will definitely shut down CALCULATIONS The below calculations are rough ESTIMATES as conditions, battery quality, and age can vary. [SORRY: I had to shorten my original review by a LOT (including many calculations) so it could fit here on Amazon.] Time to Charge This 1,024Wh Power Station - Calc: Hours to charge battery = Battery capacity (Wh) / Input Wattage -- As battery approaches 75% full, the input charge will increasingly be slowed down to prevent overcharging - AC Wall: 1,500W @ 41 mins [1024 Wh / 1500W] - 12V Car Charger -- 120W @ 8.6 hrs (at 10A, if car supports it) Charge Time with Solar - Calc: Hours to charge battery = Battery capacity (Wh) / (Panel Wattage x [0.5 or 0.75]) -- In a perfect lab, solar panels charge at the listed wattage -- Expect to only receive 50-75% on a good, sunny day (ie. 75W – 113W for a 150W panel), depending on panel's age, component quality, and weather - 200W solar panel: as fast as 6.9 hours [1024Wh / (200W x 0.75)] - Underproduction: If a panel is not making enough, adding extra ones can generate a higher, combined output - Overproduction: If the panels make more than the maximum the power station charge port can take, only the max will go through Watts Used/Produced by a Device - Calc: Watts used or produced by device = Voltage x Amperage - Vacuum with 120V @ 9.5A uses 1,140W - Solar panel with 12V @ 10A can produce up to 120W Ideal Battery Power Station Size - Calc: Battery capacity (Wh) = Watts used by device x Hours needed for / 0.85 -- 10-15% of power is lost during power conversion - 45W car fridge needed for 8 hours: Minimum 424Wh power station (45W x 8 / 0.85) FINAL THOUGHTS EcoFlow thoroughly impressed me with their Delta Pro power station and quickly added the company to my list of recommended battery providers. Their newest Delta 3, a LiFePO4 product, further surprised us (well, not as impactful as when the Delta Pro came out) with 1,500W rapid-charging that took the battery from 0 to 80% in a whopping 30+ minutes! Had I not seen that in person, I would have dismissed it as a marketing gimmick, but knowing how good power stations are today, that is not surprising any more. Add to that the ability to have the Delta 3's capacity and features expanded with additional products, and the Delta 3 makes for a VERY compelling choice against Goal Zero’s own Yeti product line that is starting to show its age. Jackery, on the other hand, is extremely difficult to recommend against the Delta 3, except that they have excellent customer service and consumer-friendly policies.

I've paired this with EcoFlow's "Smart Battery" and am pleased with its performance plus EcoFlow's support (it swapped out, via free shipping, the first unit that had an operational problem). I use it 24/7/365, powered by two Canadian Solar 455W solar panels arranged in parallel, to permanently, on-grid/off-grid power my kitchen refrigerator. During sunny days (South GA, USA) this rig reaches 100% charge by 2:00 - 4:00 p.m. (as of November 15, 2025) and makes it through the night. During grey days, it does not, but its "pass-through" circuit automatically draws power (through the refrigerator's regular wall plug) to compensate. So, you plug your refrigerator into the Delta-2 and then the Delta-2 into the refrigerator's wall plug. That's what I mean by "on-grid/off-grid." Shop on Black Friday for the better deal: The Bluetti Elite 200 V2 (I bought two, for $664 apiece, during Amazon's Prime Day in July 2025). It's newer (EV-grade battery) tech and more efficient. It also matches the Delta-2 + Smart Battery's capacity (never buy less than 2KW output and 2KWH battery capacity). Running an identical solar-powered array, my V2s power my other two refrigeration loads more efficiently (they consume less of what's called "inverter idle power consumption" and discharge at a slower rate). Put another way, their "Return Efficiency" (if you put in 100 units of power, how many units do you get back?) is higher. Again, the V2 is later and better tech and, unsurprisingly, packs a better warranty (Bluetti, too, has accorded me excellent support). Finally, for my next "load" (my PC workstation), I might go for the Pecron E3600LFP (a little less efficient than the V2) to complete my "Fractional Power Wall" plan because it might (on Black Friday) fall below $999 and, even at that price, you get more bang for your buck capacity/performance-wise (a third more power and battery capacity). Don't hesitate to ask A.I. bots, by the way, to compare price/performance ratios for the solar generators that you are considering. Fractional Power Wall: Under this method, you can do what I've been doing. Each "refrigeration array" (two 455W solar panels, wiring, a V2) has cost me (DIY-installation only) about $1200. So now I've got, on an incremental basis, parts of my home nearly 100% "off-grid" with a built-in generator: Those "loads" run (except when grey days come along) 24/7/365 off the sun, just as one can achieve with a $15,000 - $20,000 Tesla Power Wall. But my rigs are installed in a modular, incremental (hence, cash-flow permitting) way. Bonus: If a Tesla Power Wall component fails, the whole system goes down until expert repair addresses it. Under the Fractional Power Wall method, each independent array -- which requires NO permit or power-company consent -- cannot in any way affect the other. And more often than not, the vendor (here EcoFlow, Bluetti) will quickly address the issue via email or free-shipping unit swap-out. That's built-in, added resiliency and redundancy. And, of course, reduced power bills. With no professional skills, even a 70-year-old man like me can achieve this (attend "YouTube University" to learn how to mount solar panels; fortunately, the industry has listened, and it's now mostly "plug-and-play"). Pair each solar generator with a "mini-solar array" and it'll qualify for the 30% tax credit expiring on 12/31/25.

What can I say - Ecoflow has breen one of the major players in the Portable Power Station market for several years. Their products are well regarded for their quality, capacity, durability and function! The Delta 2 has been a stalwart in the mid-level, 1024Wh space for a while and when Amazon reduced the price to the level I found this, it was a no-brainer to grab one. As expected, it works flawlessly. It is more compact than one might imagine. The design with the built in carrying handles makes it exceptionally easy to move around. At 27lbs, it has some heft to it but it is still easy enough to get it where you want it. The display is intuitive and gives you a quick and easy look at power in/out, remaining life, battery percentage, etc. Battery life has been on par with what I expect for a station with its rated capacity. Charging with the included AC cord from a standard 110v outlet has been exceptional! It really charges quickly. With the LiFePO4 battery, you can expect 3000+ charge cycles or about 10 years before the battery falls to 80% capacity. Even then, the device will still deliver! Ecoflow also has a matching spare battery that simply plugs into a port on the side of this unit and effectively doubles your capacity. They have been offering it at a very reasonable price as well. With that, you have a very capable power station that could provide quite a bit of power, all for less than $750 - which is what these 1024Wh units sold for all by themselves less than a year ago!