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EF ECOFLOW DELTA Max Smart Portable Extra Battery, 2016Wh Capacity, Expand (1600/2000) up to 5644/6048Wh, Fast Charging, Expand DELTA 2 up to 3Wh for Home Backup

  • Based on 188 reviews
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Availability: 19 left in stock
Fulfilled by EF ECOFLOW-US

Arrives May 15 – May 17
Order within 3 hours and 52 minutes
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Style: EcoFlow DELTA Max 2000 Extra Battery


Features

  • Extra 2016Wh Capacity. Expand DELTA Maxs capacity up to 6048Wh with two DELTA Max Smart Extra Batteries, giving you more backup power during emergencies.
  • Customizable Power. Add up to two extra batteries to the DELTA Max portable power station, making it a perfect outdoor generator for camping or off-grid travel.
  • Charge up in Less Than 2 Hours. Charge the DELTA Max battery power station and an extra battery in less than 2 hours.
  • Multiple Ways to Charge. DELTA Max is more than a solar power station, charge up with an AC wall outlet, a car, or the EcoFlow Smart Generator.
  • Power Almost Anything. A solar generator that can power 99% of your devices and supports up to 15 devices at the same time.
  • Whats in The Box. 1. DELTA Max Smart Extra Battery 2. DELTA Max Extra Battery Cable, 3. User manual. Youll also get a 24 month guarantee from EcoFlow and friendly customer support whenever you need it.

Brand: EF ECOFLOW


Wattage: 2016 Watt-hours


Fuel Type: Electric


Power Source: Solar Powered, Battery Powered


Recommended Uses For Product: Camping


Item Weight: 40 Pounds


Voltage: 120 Volts


Output Wattage: 3400 Watts


Special Feature: Portable


Included Components: Charging Cable


Brand: ‎EF ECOFLOW


Wattage: ‎2016 Watt-hours


Fuel Type: ‎Electric


Power Source: ‎Solar Powered, Battery Powered


Recommended Uses For Product: ‎Camping


Item Weight: ‎40 Pounds


Voltage: ‎120 Volts


Output Wattage: ‎3400 Watts


Special Feature: ‎Portable


Included Components: ‎Charging Cable


Product Dimensions: ‎18.3"L x 9.3"W x 11.1"H


Total Power Outlets: ‎1


Frequency: ‎50 Hz


Starting Wattage: ‎4600 Watts


Manufacturer: ‎EF ECOFLOW


Part Number: ‎EFD310-EB


Item Weight: ‎40 pounds


Item model number: ‎EFD310-EB


Style: ‎EcoFlow DELTA Max 2000 Extra Battery


Item Package Quantity: ‎1


Special Features: ‎Portable


Date First Available: September 23, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 15 – May 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • say good bye to that loud gas-guzzling generator
Had a large gas-guzzling Honda 7000/12000-watt generator that didn't have an electric start and was too loud to run in my current housing development. Not to mention it was a bear to set up and startup. Chronic back pain prohibits and limits my ability to set up and run this outdated and inefficient solution. So, I did some homework and found the ECOflow product line. I already owned the ECOFlow delta and using it as a temporary solution to keep my fridge, microwave and a few lights going during a power outage. Then ECOflow introduced the Delta Max and Delta Pro. I decided to purchase the Delta Max and 2ea additional smart batteries. My reason for this was product weight, product foot print and cost. The Delta Max solution was easy for me to move/transport and setup. At around 50 lbs or less for each module, I can easily move and setup this solar powered generator solution without wrenching my back. I now have a quiet, efficient Backup power during those unexpected power outages. With just the Delta Max I had around 4 hours of battery backup run-time. I am talking about powering every thing in my home except those devices that require 2-phase power. With 2 additional smart batteries I now expanded my capacity to 6kWh and have roughly 12 hours of runtime. I purchased 4ea Ecoflow 110 watt solar panels and plan to build a portable frame to put them in my front yard to charge up the batteries using solar power. In addition, I purchased a Generac 7117 Gp2200I W 50St Inverter generator that weights around 47 Lbs. It’s light and easy to move around. It’s very quiet and extremely gas efficient. I use it to charge up the solar generator batteries when there is not enough sun light. I live in the PNW so it’s not the sunniest place in the USA especially during the winter months. The Delta Max has a smartphone application that connects via bluetooth that I use to determine my power consumption, run-time remaining and many other aspects for controlling the solar generator environment, including doing firmware updates as required. One neat feature of the application is that I can control how much power the solar generators demands of the gas generator while recharging the batteries. The solar generator can demand as much as 1800 watts of power during a charge cycle. I like to limit this to 1300 watts. This lowers gas consumption and noise on the gas generator during a charge cycle. The Delta Max has the ability to provide 3400W of power with ease using X-Boost technology. This allows the concurrent use of power hungry device like microwave, fridge, heater, dish washer. ect… You can use the application to stay at or below the 3400W limitations. For me it was easly achieved. I even keep my bidets powered during power outages. I just put them in low power consumption mode. Do your homework and be smart. Determine your wattage requirements for all of the items you want to power up during a power outage and then determine the worst case aggregate power requirements and you’ll be able to determine what devices can run concurrently using the Delta Max during a prolonged power outage. Use this link to purchase a cable to connect the Delta max to your existing Generator power transfer switch: https://www.amazon.com/gp/product/B08H85RQ6X/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 I really like and am impressed with the products that ECOflow manufacture. I am very tech savvy and a DYI guy so it wasn’t hard for me to research and integrate this product for a reliable and safe electrical backup solution. I haven’t had any issues using this solution during several outages since installing it. I haven’t had the need to call their tech support so I can’t comment on there abilities to support the product. I did my homework thought and it seems that they have their stuff together for good customer service and support. ... show more
Reviewed in the United States on January 14, 2022 by Jose Santiago Jose Santiago

  • Works perfectly
Bought to add to the Ecoflow Delta Max 2000 I already own. Sale price was awesome. Thankfully I had this because less than a week later we had a 12 hour power outage. With the "extra juice" I dint have to worry about 2 fridges, 1 freezer and sump pump. Also used for some basic lightning and charging phones. Ecoflow is a lifesaver. ... show more
Reviewed in the United States on March 16, 2024 by James

  • I had no issues with it, but the app
I received this unit just before going on a week long camping trip and figured it out in a day. The only part I've never gotten to work is the app and to be honest I didn't need it. If you review it online you'll find its working 1 in 5 people. Tech support couldn't help me and I will try them again later. The unit work for me in 90-100 degree weather without any issues! I rarely heard the fans running. When I did hear them I was right next to them or I was charging the unit by electrical outlet. I had the solar panels which work if you can get them in full sun. I couldn't because of where I was camping. Shade or direct sun was my choice and I chose shade! The unit powered my CPAP, fan and charged all my electronic devices for 6 days before needing to be recharged. I eventually ran a Keurig on it as well and still had plenty of power available to me. I could've gone the entire trip without recharging the unit, but decided to do it just in case. This unit is heavy and you don't want to drop it on your foot. It's insulated so it won't ground out if left on the ground or in a tent. I found it to be very sturdy and easy to use. I never had it turn off when I was using it. However, if I left it on with nothing running it turned off after 30 minutes which worked for me. I charged it on my balcony when I returned home. The unit comes with a long cord for solar panels. I had enough cord length I could leave the unit inside and the solar panels outside and still have almost 3 feet of cord. The day was cloudy so it took a while to charge. In full direct sun I saw one charge in hours. I would recommend this unit to anyone going camping. We bought this unit because we went to a state park and plugged into the outlet at the site which fried everything! The outlet was bad and ever since we've wanted to free ourselves from the need of electricity and I believe we have found it. ... show more
Reviewed in the United States on June 30, 2023 by Jes_074 Jes_074

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