MARBERO 21W Portable Solar Panel Foldable Solar Panel Charger IP65 Waterproof Solar Panels 23% High Efficiency Fast Charger USB Ports & DC 18V Output for Camping Outdoor Travel Emergency Cloudy

I took this solar charger with me on a 6 mile trail walk to do a test on this product ….. it failed the test …. But was not completely useless ….. it was charging when it was in full sunlight but when it was shady it would quick charging ….. when the sun was strong again …. I expected the item I was charging at the time would start charging again …. Unfortunately , it did not …. Unless I unplugged the device and plugged it in again . I tried it on a solar battery generator that excepts solar charging and also my iPhone . In both instances ….. it responded the same . I found it annoying that I had to reconnect it in every time a cloud came over and stopped charging . I would not purchase one again . I had a large group with me and recorded the demonstrations on a live feed to about 16,000 members …. Trying to explain the use of solar power . Not a recommended product . 5 other products were also demonstrated and did well . This was the only one that failed . Later , I did some modifications to it and was used to run a solar fan in a shed . But was permanently taken out of Field service . It looked well made …. and it fit perfectly into my personal travel backpack . I was really disappointed when it did not perform well . It would have been my new main traveler .

The MARBERO foldable solar panel exceeded my expectations in every way. Its compact design made it easy to carry, and the durable construction gave me confidence it would withstand the rigors of outdoor adventures. Even on overcast days, it efficiently charged my devices, providing a reliable power source when you needed the most. Setting up was a breeze, and the adjustable angles ensured optimal sun exposure. Overall, a fantastic investment for anyone who loves spending time outdoors or wants a dependable backup power solution.

Holds plenty of power to pump up my queen air mattress and charge all my gear. Solar charger gives full power in a few hours. Great buy

I use this product with the Enginstar power bank. I love the compact size and it charges even on cloudy days.

Alot of attachments to plug into