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Friday, Oct 23
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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. Suitable 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 only 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
Description
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Brand: EF ECOFLOW
Wattage: 2048 watt-hours
Fuel Type: Solar
Power Source: Solar Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 23 kg
Voltage: 120 volts
Output Wattage: 2400
Special Feature: Portable
Included Components: EcoFlow DELTA 2 Max Power Station, AC Charging Cable, User Manual, 400W Solar Panel
Wattage: 2048 watt-hours
Fuel Type: Solar
Power Source: Solar Powered
Recommended Uses For Product: Camping, Residential
Voltage: 120 volts
Output Wattage: 2400
Additional Features: Portable
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
Frequency: 60 hertz
Runtime: 43 minutes
Color: Black&Grey
Brand Name: EF ECOFLOW
Included Components: EcoFlow DELTA 2 Max Power Station, AC Charging Cable, User Manual, 400W Solar Panel
Model Name: EcoFlow DELTA 2 Max
Model Number: 220V DELTA 2 Max + Painel Solar de 400W
Item Highlight: LFP Battery Portable Power Station Up to 3400W AC Output Fast Charging 0-80% in 43 Min solar powered generator for Camping RV
UPC: 842783130969
Manufacturer: ECOFLOW
Item Type Name: Outdoor Generators
Manufacturer Part Number: EFD350
Warranty Description: 5-year Warranty
Item Weight: 23 kg
Item Dimensions L x W x H: 12.2"L x 9.7"W x 20"H
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Oct 23
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 2 Max+400W Solar Panel
Delta 2 Max - Pros and Cons: Pros: Well-designed product with a 5-year warranty!! Expandable to 3x its base power output of 2kWH to 6kWh via extra batteries! It has a clear vibrant digital display with the information you need. Very nice app for your phone and both the app and the unit connected easily, allowing for easy firmware update. The unit produces little noise (~30db) and self-regulates down when devices are nearing full charge. The unit itself fully charges from zero in less than 2-hours from an A/C outlet. It offers numerous ports and port-types for charging appliances and devices. It also doesn't waste power by feeding port panels that are not being used, by requiring that you press a button before power delivery to that panel. At 50 lbs. it's portable and easy take on trips. The unit can also be fully-charged from zero using your automobiles auxiliary port (i.e., cigarette lighter - 20 hrs.) or by using a much faster 800 watt alternator unit (2.6 hrs.), which is available for purchase separately. If you want to know how long this 2048Wh Delta 2 Max can power an appliance or device that plugs into one of the A/C outlets on the back of the unit, simply multiply 2048 x .087 then divide by the wattage of your appliance or device. If you want to know how long it can power a device that is plugged into one of the USB ports, multiply 2048 x .095, then divide by the wattage of your device. These formulas will give you good estimate. Keep in mind that a refrigerator, which does not draw constant electricity but cycles on-and-off, will actually be powered considerably longer than the formula suggests. Cons: The Delta 2 Max does NOT support electric clothes dryers because they use 240 wall outlet plugs. If you have a clothes dryer powered by natural gas, the Delta 2 Max does support that, because gas dryers use standard A/C outlets. SOLAR PANELS: To connect solar panels, you MUST purchase additional cables that are NOT included. Even the factory-installed wiring on the Ecoflow solar panels cannot connect directly to the Delta Max 2 unit without additional 'Y' cabling adapters or special solar extension cables. That's because the cables from the Ecoflow solar panels have MC4 connectors and the solar ports on the back of the Delta 2 Max are XT60i ports, which is Ecoflow’s updated version of the standard XT60 ports. Therefore, you WILL need to purchase additional cabling, either the 'Y' cables (these are about 2 FT long each) OR an extension cable(s), OR both depending on your setup. Below, I have provided more info about this and solar panel setup options. While charging your Delta 2 Max unit from A/C power wall outlets allows for up to 1800 watts of input, the maximum SOLAR input the Delta 2 Max is capable of receiving is 1,000 watts (500 max on each of the two (2) input ports), but there is no combination of solar panels offered by Ecoflow that will generate 1,000 watts of SOLAR power input without overloading your Delta 2 Max unit. The maximum SOLAR input you can safely achieve is 880 watts (using four (4) 220 watt panels). Below, I have provided a couple great options for safely connecting and maximizing the input from Ecoflow Solar panels to the Delta 2 Max unit. Option 1: The 880 watts solar panel (maximum approach). This particular setup requires four (4) 220 watt Ecoflow solar panels and two (2) 'Y' cables (about 2 FT long each and available for purchase on Amazon: https://www.amazon.com/dp/B0753X68PS?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1). This setup will have two (2) solar panels on each of the two (2) ports on the back of the Delta 2 Max unit. However, if you want more than about 5 feet of distance between your solar panels and your Delta 2 Max unit, you will also need to purchase two (2) solar panel extension cables in addition to the 'Y' cables. Solar panel extension cables are typically sold in 14, 12 and 10 AWG sizes. Of those, the 10 AWG is the largest diameter and the one I recommend for using with your Delta 2 Max, as the 10 AWG cable minimizes power loss being delivered from your solar panel system. I purchased these pure copper (highly recommended) 10 AWG cables on Amazon: https://www.amazon.com/dp/B07BRFPD6R?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 Option 2: The 800 watts approach (the one I chose). This approach uses two (2) 400 watt Ecoflow solar panels. No 'Y' cables are required for this approach, just two (2) extension cables, because with this setup, each of the 400 watt solar panels must be connected to its own port on the back of the Delta 2 Max so as to not exceed the allowed amperage of the Delta 2 Max unit. Additionally, each port on the back of the Delta 2 max can accept a maximum of 500 watts, so you really don't have a choice. To exceed 500 watts per port is of no benefit. More importantly, you don't want to damage your Delta Max 2 unit by exceeding the allowed electrical amperage that too many solar panels will send to the unit. I hope all of this will be helpful to those considering this product. I love the Delta 2 Max unit. I think it is an outstanding choice for those who want to power the essentials, like a refrigerator or CPAP, or other devices, and allows for easily taking it with you on trips or camping. A whole house generator system - which this is not - would cost $15,000 to $40,000 after equipment purchase and installation, and it requires fuel and is not privately contained. It also requires professional electrical installation and possible expansion of your breaker box panel. The main reason I purchased this Delta 2 Max unit was to power our modern multi-compartment refrigerator/freezer in the event of a power loss. Numerous online videos have demonstrated that many modern refrigerators of this type can actually run approximately 21 hours from a fully charged Delta 2 max, if the unit is powering only the refrigerator. The Delta 2 Max unit can also be expanded by purchasing additional batteries that very easily plug into the Delta 2 Max so that you can effectively increase your backup power by 3x. That is outstanding!
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Reviewed in the United States on July 11, 2026 by Think about it
Style: DELTA 2 Max+400W Solar Panel
Received the EcoFlow Delta 2 Max, 400w panel and solar extension cables days before hurricane Beryl (July 2024). It has been a huge relief and well worth the money! Today is our 4th day without electricity with temps in the mid 90s, heat advisory, heat index of 100 degrees and low to no wind. It's hot as hell! Unit arrived very well packaged and set up was very simple. The only negative comment regarding set up would be the solar panel case... the case is perfect for storage but flimsy when used as a stand. I made a stand out of gray pvc and it works great. About the generator... I plugged in the unit before the power outage and it fully charged in an hour. Display screen is bright and easy to read. The number of USB & AC outlets are extremely useful and it has outlets for 2 panels. Solar charing... there is a bit of a learning curve here and it has to be managed throughout the day. To get the best charge, the panel has to be adjusted throughout the day according to the sun position. I have been able to get over 300 watts for several hours on a sunny day. Watt usage... this is where you have to manage watts and the app is a battery saver!!! For example: During sunny midday I can get up to 309 watts coming in. With my 25 cu ft refrigerator, 1 oscillating fan and a TV plugged in, all of that has been using 220 watts. Banking more watts than what is being used! But, if I unplug the refrigerator (and not open it) for 4 hours the wattage usage drops to 100 (food stays cold). Banking even more watts! Managing the usage this way gets us through the day with 40% - 50% battery life at sunset. Unplugging the refrigerator for 4 hours overnight helps save watts until the sun comes up. Overall... I'm very happy with this product! So relieved that my grocery items are kept cool and I'm not out driving around looking for gas and ice! My only regret... not buying a small generator for use upstairs.
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Reviewed in the United States on July 11, 2024 by Tiffany B.
Style: DELTA 2 Max+400W Solar Panel
I really like this EcoFlow generator. It is very easy to use and charges fast. The battery lasts a long time and works great when I need power. It feels strong and good quality. I use it at home and also for emergencies. I am very happy with this purchase and I recommend it.
Reviewed in the United States on April 11, 2026 by Yaumi Reyes Garces
Style: DELTA 2 Max+400W Solar Panel
This plant is very good, the truth lasts a lot, the load, I feel it is very useful if I recommend it to excursions a lot.
Reviewed in the United States on June 1, 2026 by Osvaldo Ajete
Style: DELTA 2 Max+400W Solar Panel
The main reason I bought the battery was to have a power backup due to the constant blackouts that occur here. As I learned, I realized that it not only serves as a backup battery but also supplies free energy (via the solar panels) to the areas with the most electricity consumption in my house (kitchen, laundry room, my office etc..., which is where we spend most of the day). It works as an inverter. While the two 575-watt panels recharge the battery at the two charging ports, the battery supplies voltage at the same time, and when the sun goes down, the consuming power without needing the grid electricity (using just the battery). This has reduced my consumption electricity bill by more than half. It's a super powerful device and really worth the investment. P.D it is really funny when the entire block is without power and just my home totally lighted, I really enjoy it when everyone turns their head and look like asking them self why this house has electricity? lol
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Reviewed in the United States on July 22, 2025 by Aaron Cantu
Style: DELTA 2 Max+400W Solar Panel
I bought two units. One with 400 watt panel and one with 2 x 160 watt panels. First the unit - Compact battery and simple interface to manage the battery. The weight is around 50 lbs. Moveable but requires some strength or caution if doing by yourself. Accurate estimates for battery life. It powered my extra fridge for 14 hours (136 watt draw). It got a lot of usage during the power outages in So Cal (Jan '25). While it has only been a few weeks, I have been pleased. Second the panel - the 400 watt is cumbersome to set up. It is larger and heavier than I would expect and storage can be a bit of an issue. While the 160 panels are easier to setup and store, keep in mind that you need to have more footprint to charge than the single 400 panel. Two 160 watt panels require about 50% more width if they are setup side by side. My preference is the two 160 panels. Just easier to setup. If you have a combination of panels like I do then learn to how to setup the mixed panels correctly. Understand series vs parallel setup etc. Bottom line is that either panel performs well. Attached is a screen shot that show all three of my panels recharging together.
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Reviewed in the United States on January 24, 2025 by Elise Laina
Style: DELTA 2 Max+400W Solar Panel
First - I love this Delta 2 Max and the 400 watt solar panels. Test drove both and its amazing how they work amazing to harness the Suns energy. Simple plug and play. The app is amazing. Super quality - super packaging - very impressed. Second - for Ecoflow - I purchased this set on Sept 30 and saw it for $100.00 less on amazon prime day October 8. I took a chance and asked Amazon if anything could be done for me. They notified Ecoflow and I had a refund of the $100 plus taxes within two days. I didn't expect anything. Absolutely incredible. I am an Ecoflow boy for life now. After discussions with my sister in law who just went thru power loss here in SC for a week - she purchased a similar Ecoflow product and solar panels as well. I have a large 5kw Honda generator as my primary backup for power loss - will use this Ecoflow in my kitchen to run appliances with no noise and hooked to my solar panels. Cant wait for the lights to go out.
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Reviewed in the United States on October 10, 2024 by Paul M. Stovall
Style: DELTA 2 Max+400W Solar Panel
Excellent product! It exceeded my expectations. Everything arrived on time, very well packaged, and the quality is outstanding. I sent it to my mom in Cuba, and it has been working perfectly. The solar panel and the EcoFlow are making a huge difference for her. I’m very happy with this purchase and highly recommend it!.
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Reviewed in the United States on April 19, 2026 by Dy