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EF ECOFLOW

EF ECOFLOW DELTA Pro Extra Battery 3600Wh, 2.7H to Full Charge, Battery Backup for Home Use, Blackout, Camping, RV

    • Based on 340 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by EcoFlow Inc.
Arrives Sep 23 – Sep 28
Order within 4 hours and 39 minutes
Available payment plans shown during checkout

Style: 3.6kWh extra battery


Features

  • Expandable CapacityWith a extra battery, DELTA Pro can expand capacity from 3.6kWh to 7.2kWh for battery backup power supply. Thatll give you days of power for your essential appliances.
  • Charge Anytime, AnywhereDELTA Pros extra battery benefits from all the charging methods DELTA Pro has, including 6500W MultiCharge. That means you can charge anytime, anywhere as long as your extra battery is connected to DELTA Pro. Once connected, theyll charge/discharge in unison, keeping the battery percent level across both units.
  • Ready for Any EmergencyWhen the going gets tough and youre out of charge options, get a 1800W DC fast charge with EcoFlow Smart Generator (sold separately). Just plug the generator directly into your extra battery via the port on the back. This works even when disconnected from your DELTA Pro.
  • Stay InformedThe extra battery sports a bright LCD screen on the front of the unit giving you all the info you need. Output, input, remaining charge and time remaining. Its all there. Need on the go info? The EcoFlow app can tell you all that & a whole lot more.
  • Smart ControlDELTA Pros extra battery can be monitored from the EcoFlow app, allowing you to monitor & control your batteries from afar.

Product Dimensions: 25 x 11.2 x 16.4 inches


Item Weight: 84 pounds


Manufacturer: ECOFLOW


Item model number: EFD500


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 23 – Sep 28

This item is non-returnable:

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

    • Perfect combination
I already have 2 of the EcoFlow Delta 1300's, but I have been waiting for a solar generator that has the coveted 2000/2000 combo (2000 watts and 2000wh) for quite a while. I have been a part of 2 "kickstarter" programs (ElecHive and Inergy) that have failed to meet those expectations due to multiple delays. Over a years worth of delays and growing. So I was SUPER excited to see that EcoFlow has come out with the Delta MAX. I ordered this 2016wh generator and 4 x 160 watt panel combo and it was at my door within a week. I open the boxes run my tests and everything is working better than expected right out of the gate. During my discharge testing it was awesome to see how much battery capacity the MAX has compared to the original Delta 1300. I was running around the house running all my appliances trying to discharge the unit. Refrigerator, coffee pot, microwave, heaters, blow dryer. I ran them all and still had juice left. I eventually had to hook it to my space heater and run it for an hour and a half to fully drain the unit. While the Delta 1300 is a great little unit, they have greatly improved it with the introduction of the MAX. Some notable improvements are: 1) 6 independent A/C outlets compared to the 6 shared outlets on the 1300. 2) The fan is quieter on the MAX and only runs when necessary. It also varies the speed dependent on temperature and output. 3) It is a true EPS (Emergency Power Supply). While I could technically use the 1300 for this purpose it wasn't really efficient in doing it, the MAX is. It actually bypasses and use the wall outlet until there is an outage and then automatically switches to generator power......Awesome! 4) Introduction of the app. It is pretty cool to be able to adjust some of the settings and functions of the unit from the phone. You can also turn on and off the outlets. The best part of the app is being able to do firmware updates as they come out. 5) It's expandable! I cannot stress the importance of having the ability to be able to expand the battery capacity of your system. Not only can you add extra batteries, but you can also add their 1800 watt smart generator to this unit as well. The generator is controllable in the app and talks with the solar generator to kick on and off at the levels that you set in the app, and it will do it AUTOMATICALLY....Awesome!! 6) Adaptive A/C charging. On the MAX there is a switch on the back that allows you to switch from fast charging to slow charging. The slow charging wattage is changeable in the app. This is a marvelous addition. I have a 1000 watt gas generator that I like to keep as an emergency use way to charge up the solar generator. Previously that gas generator was not sufficient enough to be able to charge my Delta 1300 because the Delta would pull more than 1200 watts to charge and it would trip my gas generator. That is not a problem with the adaptive charging switch as I can lower the threshold to what my gas generator can produce. There are some cons as compared to the Delta 1300: 1) Size and weight. Although to be fair, this is to be expected. Bigger capacity means bigger size. Even though it is bigger, it is still portable. Myself and the wife can pick this thing up and move it around to where we want it. I honestly feel that the MAX is the perfect scenario of size, capacity, and portability. 2) The app. It was a little confusing on how to get the unit synced up with the phone. After a few tries, I got it done and now it's second nature. Once I got the app up and running it made it worthwhile. I know app controlled solar generators are pretty much a new thing for all manufacturers, so some trial and error along the way are to be expected and I look forward to see where they will go with this as they improve the processes along the way. 3) No cover :( My little 1300 came with protective covers and I really like them. I am hoping that they will offer covers for these in the near future as they were given to some who were part of the KickStarter program. Solar Panels: I already had 4 -100 watt EF solar panel and I am ecstatic to add these 4 - 160 watt panels to the mix. The EF panels work exceptionally well. They have very good efficiency and they are foldable and portable, you can't ask for more. Overall.....I am super excited about this unit. As I said before, this unit has the perfect size, capacity, portability, adaptability, expandability and functionality. I do not think you can find a better all around solar generator for whatever you are going to use it for, whether it be camping, emergency use, small home backup or whatever your needs are. Needless to say, I already have my second unit on order and will be adding some batteries to both as well. ... show more
Reviewed in the United States on October 19, 2021 by Jason
    • Absolutely PERFECT
Style: 10.8kWh (3.6kWh Power Station+2Extra Bat...
Where to begin. The generator & extra batteries are heavy. They have nifty handles that can extend outward on the bottoms, these make them easier to move. The cables that connect the generator to the extra batteries are not very long, so they must be placed close together. The batteries cannot be charged alone. You charge them by connecting to the generator and the generator charges the batteries. Noise, what noise?! There is a fan in the generator that you can hear. If you have ever used a non solar generator you know that the noise stays with you long after it is shut down. The solar panels are on the heavy side for my 68 yo husband. I don’t know yet how long it takes to charge the generator and extra batteries with two, 400 w solar panels because it is still charging as I write this. We have a third solar panel, but my husband decided to stop using two because our electricity came back on. *Now for the good stuff* When we lost electricity, it took moments to get fridge, freezer, Starlink, fans etc plugged into the generator. Easy, so easy to have everything connected and running. The generator and batteries were behind the couch in the living room. No deadly fumes to worry about! ! No worries about someone trying to steal anything outside because the only thing you can hear is the generator. We did not have to worry about electricity being restored in town because we might need more fuel for the generator. No concerns about the start button not working properly and the generator is too large to pull start. The LED panel is easy to read and understand. We used the app and were able to plug, and unplug various things to see what the usage was for each. We live close to the Texas Gulf Coast and have been through a few hurricanes, storms and even car accidents that caused power outages. We have had our share of generators and let me tell you that the Ecoflow Delta Pro is by far the best, easiest and most reliable generator you can get short of a built in system! The items I listed above are all things that we have had to worry about and deal with in the past. Unfortunately, people die every year from gas generator fumes. We would fill our vehicles up with gas and pull them one at a time around back to the patio where the generator was. My husband, after using all the cans of gas, would siphon out of the vehicles to keep the generator running. He would have to go outside during the night to do that. If you haven’t had to use a gas generator you might not appreciate how minor the so called problems are! I can tell you from experience that the Ecoflow Delta Pro system with two extra batteries is absolutely PERFECT! I will get pictures and add them to this. ... show more
Reviewed in the United States on July 9, 2024 by Rose_Adamaj

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