My old lead acid batteries are 4 years old and expect they will start to fail. I bought the delta 2 so I could transition to lithium batteries. So far it has been a very good and simple project. I like that it has it's own charge controller with a few different ways to charge. So far so good. Will probably buy the extra battery eventually.

I bought the Delta 2 after noting the better battery. A few weeks later I bought the Delta 2 Max Extra Battery & the Dual Fuel Smart Generator. So far so good. All products seem to be working nicely & I have peace of mind for the next time the power goes out. I also plan to use them in a RV.

The set up was pretty easy but for the large amount of booklets etc that come with it there is VERY LITTLE information. Need to see what it can and can’t be used for, troubleshooting etc I haven’t fully charged it yet-trying to do solar but I needed the extension for the solar panels. I have the unit and back up battery and with my less than perfect solar panel position it has been charging about 1/3 of one battery inn6 hours

Very good for backing up necessities during a power outage, and I plan to use it instead of installing an inverter in my truck. I have a river 2 max for my CPAP, and already had a EF220 watt solar panel for that, so when I got the D2 I purchased a second 220w portable panel. Charging from the grid, solar, or an inverter generator is pretty quick and easy. I can now run my refrigerator, small chest freezer, and CPAP with plenty of extra capacity for “comforts” and have more options than just firing up a generator (which isn’t always easy or convenient, and definitely not quiet).

Excited to now have over 3KW hours of power (this plus extra battery plus two 500 WH power stations I already owned) along with solar panels dedicated to each of the three power stations. Not enough to run my whole house; but, certainly makes me feel better to know I can run the fridge and furnace if needed for a day or more (not counting solar recharging).

I have ecoflow products since the early stages of the company. They just dont came with a great new ideas, but the focused on quality. And on top of all that, the support were always great. This portable panel is not an exception. The quality is great. We are using it as an extra source for our van conversion (we already have ecoflow panels on roof, but for adding extra input when needed)

Customer service is easily accessible. Product is 85% perfect. Reasons for 4 vs 5 stars below: 1. It needs a larger 12 volt Connection, over the 12v. 10 amp provided, (at least one 10 amp @ 13.5v. and two 15 amp @ 13.5v). 2. The Cooling fan is unnecessarily WAY TOO LOUD. It is controlled by charge or discharge wattage. It should be temperature controlled and redesigned to be quieter on its highest setting. 3. The Auxiliary battery should be connected in the back like all the other connections. Plus the auxiliary battery wire is too thick and stiff. Please don't BS me and say it needs to be that way.

I bought the EcoFlow Delta 2 as protection against a power outage. Not having experienced a power outage since my purchase, I can’t report how well it would perform in one or how long it will last. What I can report on is that it is easy to set-up and connect to my phone and iPad, and it charges remarkably fast. I tested it under a light load (literally, lights), and the discharge rate was minimal. Testing it by connecting a 1450w space heater did drain the battery swiftly, so that’s not a wise use of the unit. Since gas-powered generators are dangerous, and each winter, there is at least one local news report of someone dying from a gas generator being run in a garage or porch, and they must be refueled every four hours, I feel that this 120v battery is the prudent and inexpensive way to prepare for an outage. I have yet to test the solar panels I purchased with the Delta 2.

That is an excellent solution for those who need back-up electricity during blackouts, like we have here in Kyiv. I would however do not recommend purchasing the US 110V version of the product if you live in the 220V environment because you will need to purchase additionally a 220-to-110-to-220 electricity inverter. That is a bulky thing.

I actually have two of these. I bought this new on after having the first for aver a year and using it for everything from an overland camping power supply to powering my power tools for light construction projects without needing to run long extension cords from the house or barn. Fast recharging when plugged into a wall outlet. Solar recharging works to but of course is much slower. Money well spent if you find it on sale.