Amazon Reviewer
An excellent 1KWh portable power station and awesome solar panels!
I'll preface this review by saying I already own an EcoFlow Delta 3 (not Classic) and have posted a detailed review of that product, so I am quite familiar with the features the Delta 3 series provides. I specifically wanted the more basic Delta 3 Classic for travel use, because the other one is semi-permanently running some critical items at my house as a UPS. I needed a smaller set of outputs for camping/travel use and didn't require external battery expansion. This review will focus on both the Delta 3 Classic and the EcoFlow 220W solar panels.*** Delta 3 Classic ***The Delta 3 Classic is a premium grade 1024Wh portable power pack with a more basic set of features. The build quality is excellent all around, including a very durable case, bright display, built-in carrying handles, and multiple charging options, including AC charging at up to 1400W (configurable through the app - see later in my review), solar panel charging at up to 500W via XT60 port (11-60vDC, 15 Amp maximum), or both concurrently (with solar priority).It has three pure AC output ports (2x 120v 3-prong 15A/20A connector, 1x 120v 2-prong connector) which can support up to 1800W continuous pure sine wave power, a can support select high-current devices - inductive loads like kettles, hair dryers, heated blankets -via "X-boost" technology at up to 2600W. AC surge output up to 3000W for temporary high loads typical of some devices when you power them on initially. Note the high output modes might be limited to using a single outlet at a time.On the DC output side, you get a basic set of ports, with one USB-A up to 18W, one USB-C 30W port, and one USB-C 100W (USB-C PD) port, which can simultaneously be used for their full rated output levels. The built-in LED display is very detailed and bright, with adjustable brightness using the app.Speaking of the app, I finally took time to dig into using the Ecoflow app with this unit, since I had time on my hands over the weekend. The app is very professional, and leverages the capabilities of EcoFlow's larger portable power units with Bluetooth connectivity. I learned that the Delta 3 series support WiFi, which gives some cool capabilities and enhancements if you want to use the unit as a UPS, for which it provides 10ms switching from grid power to battery power. There is a lot of functionality around the UPS use case and other home use cases, so go to EcoFlow's website or check out some YouTube reviews to learn more about this if you are considering that use case. Even for non-UPS use cases, the app gives a ton of information, lets you update firmware, see the unit specifications, adjust the AC charging rate to maximize the battery life by reducing the cell temperature during charging, see output per port, and so much more! I confess that I initially thought the app was a gimmick, but it is a real value add. On the camping trip I used it to remotely power off the UPS when I woke up before the rest of the family since I knew all our devices had finished charging, and was able to determine that I would want to hook it up to solar to charge it that afternoon.I didn't notice the noise of the unit when I charged it at home after using the app to adjust the AC charge rate to the 500W level which prolongs the battery life, but I am sure if you run it at 1400W maximum charge rate it's going to run the fans to dissipate the heat and protect the batteries. It's awesome to have the choice about noise vs speed.Unit comes with 3 year warranty, plus 2 additional years for registration, for a total of 5 years warranty. I recommend using the App to register for the warranty since it makes the process so easy, just screenshot your order information and answer a couple of questions. EcoFlow has been around a long time and I expect they will fully back their warranty for the 5 years.*** NextGen 220W Bifacial Portable Solar Panels ***I had previously purchased solar panels for another charger, and can tell you that not all portable power stations are created equally when it comes to solar charging. The best units have a wide range of input voltages, and support high maximum current to allow you to chain pairs of panels. With the 15A input current limit, you will find that panel arrays which produce under 33vDC output will be current limited below the 500W maximum. The supplied 220W panel set I purchased with the Delta 3 Classic provided nice adjustability in terms of setup angle to ensure they are directly facing the sun for highest output. My camp site didn't have any space large enough to get 100% sun, but even with a little shade and less than directly overhead sun, I was getting 190-200W charging reported on the EcoFlow unit's display. I am confident I could fully recharge this in a full day of sun any time of year in Southern California where I leave, as long as the sky was clear.These panels are "bifacial" which means they can charge on both sides. If you set them up strategically, with sometime reflective behind them, they can potentially put out over 220W, since the front side can generate 220W and back side can generate 175W. I didn't get to play with this a lot but the smaller size and potential for higher output seem like big positives compared to older designs and materials.The panels fold up easily and come with a nice carrying bag to keep them clean and protect the cables, and the cables allow them to be connected in series if you want to get closer to the 500W maximum charging rate. They included the adapter cable to connect them to the XT60 port on the Delta 3 Classic or other power station. They are light-weight, waterproof, and didn't get hot in the direct sun. I really appreciated the combination of the solar angle indicator (simple, durable, easy to read) and the angle adjustment mechanism on the back. My one complaint was how "stiff" the row of panels was on initial use, but I think once they warm up in the sun and get used some more it will be easier to line the up and optimize their output.*** Final thoughts ***The items both came well packed, in excellent condition, and were very easy to use and to use together. Highly recommend using the app from the very start with the unit and taking the time to learn the app features as well as the Delta 3 Classic and Solar Panel features.Here's the scale I'm using for my ratings:⭐️ 1 star= Nope! I not recommended. It’s poorly made, or not what it’s listed to be.⭐️⭐️ 2 stars = Has some redeeming qualities, would not buy again.⭐️⭐️⭐️ 3 stars = Meh. It's passable. Might not be worth the price.⭐️⭐️⭐️⭐️ 4 stars = Good, but there’s something off⭐️⭐️⭐️⭐️⭐️ 5 stars = Yes! 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