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

These make keeping a refrigerator and freezer going during a power outage easy as pie!! Works great. Haven’t used with solar panels yet though. We’ll see how that works. Just not sure how long two 160’s will take to charge it up.

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 Chronic back pain prohibits and limits my ability to set up and run this outdated and inefficient solution.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=1I 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.

First off I just want to say Ecoflow max with the added battery is a sufficient power system to run 90% of my home on eight separate circuits. All the circuits are 20 A and with everything turned on running at once he can run my whole home without any external power source for 11 hours, that is absolutely amazing considering this is a battery and not any type of fossil fuel generator! I did purchase some 10 AWG cable and connect my MC four connectors to it to run to 1000 W of solar that I have outside. With the solar plugged in in a moderately sunny day I can be off grid for as long as I want! The only limiting factor is the ability to run any type of 220 V appliances. That is OK because most of my appliances are 110 and or gas/propane. The set up and warranty registration of these products were extremely easy utilizing the EcoFlow website and the EcoFlow app is equally good. It allows me to see the current usage input in output from my solar panels and what I am using in the house at the same time. I can regulate the power I use accordingly to increase the amount of time I have in battery storage. This is amazing technology and I cannot wait for the Ecoflow pro to be available so I will have the capability of running 220 V with two of these combined. Once that happens this will be a great tool for any prepper, homesteading, camping and outdoor fun. These things are light enough to carry around anywhere you need to go and powerful enough to power what you need. The other thing I like is that while you’re driving you can have these charging from your vehicle with the included DC 12 V plug to top them off if need be. I would highly recommend getting the EcoFlow max and an added battery or two if you really want to get serious. I’m extremely happy with the purchase and I will be purchasing more in the future from Ecoflow. They have great customer service and great support! PS, I also saved the foam packaging and used it to set my EcoFlow battery on instead of just putting it on the concrete it makes a great pad for the battery!

Bought 4 of these to back up my Delta Max. All have been in use for over a year now and ran daily from 800 watt solar panels. They have been working great and doing their job.On a sunny day, I will run these for about 6 hours producing around 4kw of energy per set. Not a ton of offset to our power bill, but also work great in a power outage situation to run most of the house.

Having purchased a Delta 2 Max a while back, and being sold on their warranty and support with any issues I had, buying an extra battery to double the KW was a no brainer.The unit easily plugs in to the side port on the Delta Max with the included cable. Following directions is important when setting up the unit, or performing any software updates or Battery synchronization, but once done, you now have 4KW instead of just 2! Its a little bit lighter than the Delta Max, and has a great top compartment for cable management/storage as well!Having used the Delta Max to connect to the Generator box on the outside of the house, I can now run this in the evenings when the power is out, without having to run the gas generator all night!If you have a Delta Max already - get the extra battery!

Added extra smart battery to Eco Flow Delta Max 2000. Set-up was easy, charged unit to 100%. Plugged in a 32" TV and cable box. Ran both for 11 hours a day as a test and to drain both batteries. Took 3.5 days to drain to 26%. Excellent. Delivered without a hitch by UPS. Great overall service.

Integrates with the Delta Max batteries perfectly. Since getting these, I haven't had another outage yet, but based on previous outage with just the 2 Delta Max, my new setup should give me 48 hours of power for my water pump, hot-water heater and fridge in warmer weather. During winter, probably 24 hours with my furnace in the mix. Can't wait for the next outage to try them out!!

Truly amazing product. I have purchased main unit first and was trying to keep my big 43' Fifth Wheel running off grid, but soon realize I needed more power. I add two more batteries for total of 6016Wh.Fully charged I can run my full size refrigerator, make coffee, run microwave for almost 16hrs without needing to recharge.

Very happy with our purchase. The customer service, shipping and quality are at the top with this brand.We bought it to expand the power of our ecoflow delta max 2000 battery, and it really worth it !