EF ECOFLOW Solar Generator DELTA 2 Max 2048Wh With 400W Solar Panel, LFP Battery Portable Power Station Up to 3400W AC Output Fast Charging 0-80% in 43 Min solar powered generator For Camping, RV
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Availability:
20 left in stock
Arrives
Monday, Dec 1
Style: DELTA 2 Max+400W Solar Panel
Features
- [Fast Green Charging] Charge DELTA 2 Max wherever there's sun with portable solar panels. With a single 400W panel that has a high conversion efficiency of up to 23%, top-up in 5.1 hours. Add another 400W panel and charge in as fast as only 2.6 hours. Ideal for power outages at home or outdoor.
- [0-80% in 43 Mins] DELTA 2 Max utilizes EcoFlow's dual charging technology, and with a combined solar and AC input of 2400W, 80% charge in only 43 min. Or stick with AC for an 80% charge in a speedy 1.1 hour.
- [Upgraded LFP Battery Offers More Than 10 Years of Use] LiFePO4 battery chemistry provides 3000 100% charging cycles till it lowers to 80% capacity. That's 6 more cycles than the industry average and more cost-efficient. DELTA 2 Max also comes with an extended 5-year service.
- [Power 99% of Your Household Devices] Run pretty much any of your home appliances with an output of up to 2400W. With 15 outlets, there's space for any device. Plus, with X-Boost mode, power some high-wattage appliances with up to 3400W.
- [Lightweight & Waterproof Panels] Our 400W portable solar panel is robust, IP68 weatherproof, and designed to survive the rugged outdoors. Weighing ony 35.3 lb, this foldable, compact panel with it's own waterproof case is easy to pick up and take anywhere.
- [Customized Smart App Controls] Customize the working time of DELTA 2 Max to avoid peak rates. Easily adjust AC or solar input to fit your needs: Prioritize solar energy input via the EcoFlow app when using X-Stream AC + solar dual charging. Get a notification via the app when the battery hits a low.
Brand: EF ECOFLOW
Wattage: 2048 Watt-hours
Fuel Type: Solar
Power Source: Solar Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 23 Kilograms
Voltage: 220 Volts
Output Wattage: 2400
Special Feature: Portable
Included Components: EcoFlow DELTA 2 Max Power Station, AC Charging Cable, User Manual, 400W Solar Panel, Kickstand Case, User Manual,Snap Hooks, Solar to XT60i Charging Cable See more
Brand: EF ECOFLOW
Wattage: 2048 Watt-hours
Fuel Type: Solar
Power Source: Solar Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 23 Kilograms
Voltage: 220 Volts
Output Wattage: 2400
Special Feature: Portable
Included Components: EcoFlow DELTA 2 Max Power Station, AC Charging Cable, User Manual, 400W Solar Panel, Kickstand Case, User Manual,Snap Hooks, Solar to XT60i Charging Cable
Color: Black&Grey
Product Dimensions: 12.2"L x 9.7"W x 20"H
Model Name: EcoFlow DELTA 2 Max
Engine Type: 4 Stroke
Ignition System Type: electric start
Engine Displacement: 79 Cubic Centimeters
Total Power Outlets: 15
Engine Power Maximum: 2400 Watts
Starting Wattage: 3400 Watts
Running Wattage: 3400 Watts
UPC: 842783130969
Manufacturer: ECOFLOW
Item Weight: 50.6 pounds
Item model number: 220V DELTA 2 Max + Painel Solar de 400W
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Dec 1
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Style: DELTA 3 Max+220W Solar Panel
EcoFlow announced the Delta 2 power station at IFA Berlin 2022 with the tagline of: “Not Just a Battery.” It was available for purchase on September 16, 2022. After their excellent Delta Pro we reviewed not too long ago for our vacation home, we were very intrigued by what this new product could do, and how it would compare against Goal Zero and Jackery. We were impressed and highly recommended it. Three years later, we reviewed the Delta 3 (which now is called the Delta 3 Classic) and continued giving our recommendation. Now, the company has released the Delta 3 Max and we were more than happy to buy and check it out. I will also provide a brief summary for the EcoFlow 220W Bifacial Solar Panel at the END of the review. DIFFERENCES: Delta 3 (Classic) vs Delta 3 Max The Delta 3 Max provides double the battery capacity and 33% more output power than the Classic. The Max Plus (which we did not buy) could have its battery capacity expanded to 10,000Wh compared to the Classic's 5,000Wh. Both the Classic and Max still charge very fast from 0 to 80% in less than an hour. One should note that the Delta 3 Max Plus provides even more capabilities than the Max that we bought. Now on to a more extensive review of the Delta 3 Max. The Delta 3 Max's 2,048Wh battery capacity — how long something can run for — gives it double the runtime than 1,024Wh power stations that I consider to be the sweet spot for most consumers. Those include the Goal Zero Yeti 1000, Jackery Explorer 1000, and its own predecessor, the EcoFlow Delta 3 Classic. EcoFlow, Jackery, and Goal Zero have all witched from NMC battery chemistry to Lithium Iron Phosphate (LiFePO4). There are significant differences between both Lithium-ion (Li-ion) battery chemistries that I will detail shortly. 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. 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. LiFePO4 is bulkier and heavier, and so why would one want them? They hold some important advantages over NMC: - Safer, less volatile, and thus cheaper to manufacture - Charge cycle: 1500-2000 (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) - Usable in more extreme temperatures (-4F/-20C to 176F/80C). NMC: only 140F/60C max - Holds 350-day charge. NMC: 300 LiFePO4 batteries are less volatile (safer), more usable in extreme temperatures, and have a higher charge cycle count (battery lifetime) than NMC. 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 Max provides 2,400W continuous output with a 4,800W peak - 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 4,800W, it can be STARTED. Examples… -- Turns on OK (PEAK under 4,800W): --- Freezer starts at 400W (peak), runs at 150W once on -- Will NOT turn on (PEAK over 4,800W): --- Some very heavy-duty power appliance starts at (a made-up number since I don't know any that would use that much power) 5,000W (peak), runs at 2,000W 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 2,400W total, they will stay ON until the battery runs out -- CONTINUES running (under 2,400W) --- 100W TV + 60W laptop = 160W -- COULD STOP running (over 2,400W) --- Temporary overdrawing beyond 2,400W 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) + 800W appliance (1,100W peak) = 2,800W. Probably will stay on for a short period ---- Add 1,000W mower (1,400W peak) = 3,800W. 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 2,048Wh 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: 1,800W @ 80 mins [2,048 Wh / 1,800W] - 12V Car Charger -- 120W @ 17.1 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 13.7 hours [2048Wh / (200W x 0.75)] -- Note that the Delta 3 Max can charge at up to 1,000W via parallel-connected solar panels - 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 us with their Delta Pro, Delta 2, and Delta 3 power stations and quickly added the company to our list of recommended battery providers. Their newest Delta 3 Max, still a LiFePO4 product, continues improving on the Delta 3 series with double the battery capacity, 33% more output power, and double solar input capacity. It continues charging from 0 to 80% in less than 1 hour, and to 100% in 80 mins total. We continue recommending the Delta 3 series without any hesitation. ECOFLOW 220W BIFACIAL SOLAR PANEL I had written a separate, detailed review for this 220W solar panel at its own Amazon product listing, and so I will provide just the conclusion from that review here. The Panel sparked my curiosity on how much better output a second set of panels built into a single product could provide. It did not wow me and required a specific, reflection-optimized environment to add any meaningful energy to the primary, front-facing panels. However, I still came away impressed because it had the potential to increase solar output for nearly the same price as Goal Zero's Nomad 200 or two Jackery SolarSaga 100. Higher-capacity solar panels like this one are essential to charging large power stations (like the Delta 3 Max this came with), especially if those batteries only accept a limited number of connected panels. The foldable design allows it to be set up and put away quickly and uses up a much smaller amount of space than rigid panels that are meant to be permanently mounted. However, it also makes it more susceptible to damage if the panels are bent at an angle of more than 30 degrees. Overall, I was very impressed by the solar charging efficiency the EcoFlow 220W provided to both the EcoFlow Delta 3 Max and Goal Zero Yeti 1500x batteries. The panel's 155W backside -- when deployed in an ideal environment -- is a welcome icing on the cake to provide just a little extra charging juice for the traveler or home prepper.
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Reviewed in the United States on October 10, 2025 by YuenX
Style: DELTA 3 Max
Works very well. Although the app isn't 100% accurate as far as the graphic display is concerned. I have set the app to stay on in the background but it times out sometimes when my phone goes to sleep anyway. May be phone related. Best to fully charge before use ( comes at 30% ) and cycle down to shut off when first using, to set the internal calibration. I like the variable charge rate as I think it will provide a longer battery life over time. I use it as a UPS for my gas, hydronic recirculating (radiant ) water furnace ( very efficient, house built in 1950 ) and used it for a complete run to shut off, it lasted about 3 days as my furnace uses about 37W when running and I occasionally ran the circulator for my gas fired water heater ( 67w). My furnace didn't "feel" the switch from grid to battery at all. It's Fall here in Michigan so the furnace doesn't cycle that much as compared to the depth of winter. As a UPS it discharges about 1%/day due to it's internal needs. I set the charge range 10%-90%. Will charge to 100% when bad weather is due. The app has a "storm" setting that will set the charge to 100% if a weather notification is broadcast, not sure if it works yet. I imagine a furnace that uses forced air heat will use more power, so I would recommend a higher capacity set up for those systems. I have an older Ecoflow with 1024W capacity but it uses different battery tech and no app, I am much more confident using this model for my furnace and will use the other unit for less important needs during a failure. I have solar panels I bought with the first unit but I do have access to a home with a Generac if my outage lasts long enough to run down my backups
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Reviewed in the United States on November 5, 2025 by bradley cohen
Style: DELTA 2 Max+220W Solar Panel
I've read a LOT of reviews, watched a LOT of Youtube videos and had given the purchase of a solar generator (actually, it's just a big rechargeable battery) a LOT of thought. I won't go into all the specs and technical junk since a lot of the other reviewers have done all that. I will just try and briefly discuss What I think about it. I spent around $1,700 for it but that included a big 200 watt solar panel. I see now that the whole package has even gone down a couple hundred dollars to around $1.500 but I still think I got a pretty good deal. I'm a 66 year old female and though both the battery and solar panels are heavy, I can still move them to where I want them. It's summer time here in the Deep South so I laid the solar panel flat on the ground where strong sunlight could shine on it. I had to move the battery fairly close to the panels since the connection cords are only so long, however I set it on a garden stand up off the ground and covered it with a white reflective towel to keep it from getting hot. The color of the battery is dark grey and will absorb a lot of heat if left out uncovered. And for crying out loud, don't forget about it and leave it out in the rain, or it will be ruined. My battery was at 38% charge when unpacked from the box it was shipped in. After 2 days of being charged by the solar panel (and with adjustments made for the movement of the earth and sun) it got to 76% charge. I like having the option to charge it by use of solar panels (and you can connect 2 of them at the same time but I only used the one it came with), but I hope I don't have to use them very often, since it's not a very efficient way to charge it. I charged it the rest of the way to 100% using a household outlet. I chose this particular solar generator (battery) because of the many high reviews, the price, and an output of 2400 watts will power a LOT of things such as refrigerators, freezers, a washing machine, coffee pots, microwave and all the smaller electronics and crap one thinks they'll need if the power should go off for several days. BUT!!! It won't power big appliances for more than 2 or 3 days before needing recharging. That's where the gas generator really comes in handy. It can be used just long enough to recharge the solar battery then shut off to save gas. That's my plan anyway if it should come to it. I think having both a solar generator and a gas/propane generator is the best way to do it as long as you have enough fuel. I connected my now fully charged solar battery to a mini fridge and it stayed nice and cold for 3 days until I disconnected the fridge and plugged it back into a regular outlet. I learned that if you're going to store the battery long term, that it needs to be at 50% or slightly less of a charge to keep the battery safe from self-damage. I don't know the details about why it needs to be at a lower charge, but whatever. The digital readouts are easy to see, it can be connected by an app to your phone, which would be nice in case you needed to see how things were going at the ol' homestead while you were out foraging for berries and non-poisonous mushrooms. But wait! If there's been an EMP then nothing will work anywa................! I suggest learning how to build a Faraday cage and storing your expensive battery in it when it's not needed. The solar panels are huge. Good luck figuring out how to keep them from getting melted if the bombs fall or the sun belches out a big one in our direction. But, you can only do what you can do...... So far, I really like my big battery. I have absolutely nothing negative to say about it. If it should fail for some reason I will be here to update this review even before you hear the sonic boom I created getting here. Oh yeah! I forgot to mention shipping. The battery took about a week after ordering to arrive and it was very well packaged. The solar panel was shipped separately and took about another week (two weeks after initial order) to arrive in very good condition. I chose to purchase it through Amazon because I'm very familiar with Amazon and it was several hundred dollars cheaper than if I bought it directly from Ecoflow. And shipping is free with Prime.
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Reviewed in the United States on July 30, 2024 by loveguitar