EF ECOFLOW DELTA Pro 3600Wh Portable Power Station with 2X220W Solar Panels

We got the Ecoflow Delta Pro with transfer switch to run our furnace, fridge/freezers, sump pump and basement sink pump (where furnace condensate pump drains) overnight when the power is out due to storms. We had an electrician install the transfer switch not too long after receiving the unit. While we have not had an outage since we got it (not that I mind!), we have tested it out and it will be more than enough to allow us to peacefully sleep overnight. Except in situations when the furnace is going nearly constantly, we expect that this unit will run about a day with what we have on it. Before, we had to juggle sleep times to make sure that the fridge didn’t warm up and/or the house get too cold. Plus there was having to deal with an outside generator and the power cables going into the house in the cold and dark to boot. We used to use space heaters, which don’t quite do enough for the northern US in the winter, especially if you are out for a few days. The transfer switch is invaluable as we also can use it to plug in the generators to run the circuits attached (the furnace!!!) while recharging the Delta pro. A few things to note: 1) The Delta Pro’s instructions recommend a 45 day power discharge-charge cycle to help maintain the battery. We’ve just added it to our home maintenance routine and use the transfer switch for the discharge part of the power cycle. It works great and also gives us an idea how long it will work when we need it. I’m actually running a testing cycle as I’m writing a review in on a cold, snowy day. I don’t think that I could be more pleased with this setup (working as planned)! 2) We have done nothing with the bluetooth/wifi interface. We’re just using it as a backup battery that we manually connect to the transfer switch and it has been doing that so far out of the box without modifying the settings. If that’s important to you, I think other reviewers commented on that. 3) The transfer switch when we got the kit is a manual transfer switch that has 6 circuits with 120v as it comes with a single Delta Pro. You operate it fully manually, and that’s what we wanted. It is NOT a standby that kicks on if the power goes out (I think that you would need a smart panel for that). If you need 240v (for central AC?), keep that in mind as you may want a different transfer switch and should get the Delta Pro 3 or two Delta Pros with the double voltage hub. Any electrician should be able to get an appropriate transfer switch locally if you need to go that route.

So far so good, really like the battery, where I live power goes out a lot, some scheduled maintenance days by power company. So I bought to run refrigerator when power goes out. Plugged in charged to 85%, ran drop cord to refrigerator and keep the battery plugged in all the time, I’m basically using as EPS. Lot of times I’m not home when the power goes out so the battery kicks in when needed and when the refrigerator is plugged into the battery and their is AC power it by passes the battery and automatically switches on when the AC is removed. I’m thinking of buying the extra battery to double amount of time can run refrigerator. I do have an inverter type LG that uses way less than 200Watts when running, I expect it to run almost two days on the battery. I didn’t install solar panel due to location but will setup so can use car charging option thru solar connectors and purchase a small dual fuel generator to charge the battery in emergencies via LPG gas.

It worked well for my purposes. I have a refrigerator plus a chest freezer connected. Also some small appliances and several computers. It's good backup when we get a short outage. I like that it's expandable but I don't like that I have to buy expansion batteries only from Echoflow. There is a hack that allows the use of other batteries. I have not tried it.

I bought a Delta 3 solar backup with two 400 watt solar panels. The panels exceeded my expectation at roughly 85% capacity when in full light. I love the fact that they come with a manual lockout box to activate particular circuits within the house. Basically my entire first floor can have light in the event of a power outage by the flick of a button. The only downside to the Delta 3 is the price. Adding an additional battery is way outside of my budget. I really wish they would give better deals on repeat customers wanting to upgrade their stored battery capacity with getting a secondary backup battery. The unit itself is great I have no problems with it. It turns on it connects via Bluetooth and app without a problem which I can't say worked with their competition. I owned a jackery prior to this and this model far exceeds the capabilities the user-friendlyness and the efficiency. Overall if you're looking for a solar battery backup in the event of a storm or power outage the Delta 3 is great again I just wish a secondary battery was a little more affordable

This needs to be less stars but that’s not allowed. What you need to know: This is not a solar backup battery, this is a battery generator. All the pictures on the description of it connecting to existing PV panels is false advertising. These attach like any standard gas generator with an interlock or with a sub panel. Because of the onboard inverter in the ECOFLOW device this will not communicate with ANY PV solar inverter. Thus it cannot work to back up a home system. Eco flow falsely advertises this hooking to a PV system and being “charged by solar”. It cannot! It can solar charge, but only with Ecoflow panels that are place on the ground, temporarily. Not a permanent solution. What’s worse is these things are about 150 lbs and when trying to send them back ECOFLOWS customer service is horrible. They will send a return label but refuse to schedule a pickup making it your expense to get your money back where do you take 400lbs of batteries and generator to be dropped off. No where in my area because the place refuse to accept them. Clearly ECOFLOW spends all its money on engineers because what these are actually designed for they are nice items. Advertising and customer service however is horrible. Just buy and EG4 battery an hook up your solar with a reputable company. For a RV or camp trip, buy the dual fuel generator or solar panels and it will be fine, it would get a smaller one because it is heavy as sin. This is not for home use other than to run an extension cord to a fridge or fireplace blower. The one star here is for AMAZON (will be 5 if this gets resolved) they have worked with me through this process and are working to make it right. Not sure what will happen yet but they are saying all the right things.

I ordered everything on the 2nd from Amazon. There were three separate shipments made. Received the Delta Pro very quickly. I had to message EcoFlow for the tracking numbers on the cord and transfer switch. (Easily done right on Amazon messaging). EcoFlow responded very fast and was extremely helpful! The transfer switch arrived on the 9th and the cord came on the 13th. So I had everything in less than two weeks. Quality products and reasonable shipping time. Highly recommend!

Love this product so much this is actually my second one the first one was the 1800 W Delta and now I am covering my whole house instead of just a few appliances

Once I get this installed it will be super convenient during power outages. Keeping the heating system running in winter is priceless.