The EcoFlow 400W Portable Foldable Solar Panel has been outstanding. It delivers strong, consistent power in good sunlight and pairs perfectly with EcoFlow power stations. Setup is quick, the folding design is convenient, and it’s easy to reposition to track the sun. Build quality is excellent—sturdy materials, solid connectors, and it feels made for outdoor use. Despite its size, it’s manageable to transport and stores neatly when folded. This panel has been a reliable way to recharge during outages and off-grid use. If you need serious portable solar power, this panel is worth the investment. Highly recommended.

The solar panel works as it's supposed too. Gets close to the wattage, if placed correctly in the sun. Charged my EcoFlow Delta within 3 hours from 50% on a sunny and warm day. I did have an issue with the kickstand and had to prop it up using outdoor furniture, but I'm assuming that was user error. :-) One of the accessory hooks broke, but they replace it very promptly.

Solar panels are great and provide faster charging than I thought they would. They are extremely heavy however and I was unable to move them around well. Also, they are floppy and it is difficult to easily reposition them for sunlight. If you are not very strong and small in stature, you should consider a smaller panel set.

I am very impressed with the Echoflow foldable solar panels. Well made, meets or exceed all specs. I like that the panels are built for the Echflo pro product and I don't have to gerry-rig 3rd party solutions..Be aware that they are soldi built which makes them heavier than other similar panels.....just goes with the territory if you want quality..........In-addition.....I am always impressed with the customer support EchoFlow provides....I know I can always get an answer to my questions either through customer support line or the EcoFlow Delta Series Group, face book page ..I highly recommend all of the Echflow product and anxiously waiting for new products that can augment my home power needs..... thank you very much!

Hoked up a single 400 watt panel. I live in orlando florida so sun is always available With some adjustment it was pushing 300-325. I purchased a second panel but havn’t tried them in series yet. I hope to get 600-700 watts. I think it will do the job with an extra battery. .

I bought 2 large EcoFlow batteries on their website but they were sold out of the 400W solar charging panels. Found out Wall Mart had them so I ordered it through them for a great deal. I was nervous about buying from two separate places about compatibility and whether all the connecting cables/cords would be included. Turns out everything was included, compatible and it worked like a charm. My batteries were both less than 50 % when they arrived and the first thing I did was put it out on the deck and charge them both with the solar charger to full charge in about 4-5 hrs. I was worried about how bulky and heavy the solar panels would be for this size of a charger. It wasn't bad at all. Everything folds up nicely and the carrying case works well. Love it !!

I bought one portable EF 400-W solar panel and tested I for “real output”. I liked it so I bought a second panel and connected it to my DELTA Pro Ultra. Yesterday’s two panels in series produced 3.16kWh of solar energy on a sunny day. My only concern is how long will the folding panels last, when compared to the fixed panels. The big plus is that the entire system is portable, so it can be moved if/when I change locations or go camping. The DPU is a bit heavy, but a small dolly can be used to assist in moving it. Proprietary connections on the inverter and battery may limit connections to future advances or improvements, but they also make it very simple to setup and get the system running to support a small home office.

You know how you bump elbows with someone on the sidewalk and they put a little brainstorm in your head, well thats what led me to buying the Delta Pro and the "Extra Battery" .. I use it exclusively for charging my Tesla (I don't have a garage, or access to electricity in my carport) .. Perfect solution for everyday driving for me ...

Purchased this unit (DP) to act as partial backup to home using the EF 400W portable panels. The initial base line testing has been completed and the unit performed well. Will have final verdict after a few more weekend tests. The solar panels seem well built. The dual purpose kickstand is a little tough to use and does not show good value unless conditions are ideal (which is almost never the case)

The panel itself is a bit bulky (42lbs) if you make a brace it works very well I have gotten up to 385 watts of power. And the panel is robust. The down side to this panel is that it takes 6 to 8 min to set up. And the team that designed the stand never tried to use that piece of crap I have 3 of them modified all of them so I don't have to unfold or use the terrible stands .