BigBlue 5V 28W Foldable Outdoor Solar Powered Charger With SunPower Solar Panels 3 USB Ports for iPhone iPad Samsung Galaxy LG Cellphones Devices

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$69.99$57.99
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Average Customer Review

222 of 226 people found the following review helpful
5.0 out of 5 stars Passed All of My Tests, Even With Early Evening Sun, September 29, 2016
This review is from: BigBlue 5V 28W Foldable Solar Charger 3 USB Port Waterproof Outdoor Solar Powered Charger With SunPower Solar Panel for iPhone iPad Samsung Galaxy LG Cellphones Devices and More (Electronics)
Customer Video Review Length:: 3:24 Mins

This solar charger passed my tests, even in the early evening on a fall day!

I have tested 5 of these folding solar chargers now. This one is is just as good or better than others. I tested the 28 watt (4 Fold) version which is capable of charging up to 3 devices. This one has a rubber weather protector over the USB ports to help protect from water and dust. I also like the soft tie downs on this charger. Many of the others on the market use metal rivet holes. The flexible strap points on this one will give a little bit more flexibility in attaching this panel to a tent, tree, backpack, etc...

Unlike other 28 watt solar chargers that I have tested, this one has only 3 USB ports. Believe it or not, this is actually a good thing. While you probably could charge 4 full sized smart phones in the middle of the day with the sun directly overhead, in the morning or evening, you are going to be asking way too much of the... Read more

79 of 80 people found the following review helpful
4.0 out of 5 stars Maxed out at roughly 17W, May 25, 2017
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This review is from: BigBlue 5V 28W Foldable Solar Charger 3 USB Port Waterproof Outdoor Solar Powered Charger With SunPower Solar Panel for iPhone iPad Samsung Galaxy LG Cellphones Devices and More (Electronics)
I did some charging tests using both dummy loads and battery banks. These were done in California in late May, exactly at noon with the sun overhead and the panels lying flat horizontally:

Using dummy loads, 1 port (labeled 2.4A):
2.39A @ 5.14V = 12.33W
3A @ 5.03V = 15.09 W
4.36A @ 3.60V = 16.70W

Using dummy loads, 2 ports (labeled 2.4A)
1.98A @ 3.4V + 2A @ 3.13V = 13W
2.39A @ 4.89V + 1A @ 5.21V = 16.90W

Using battery banks ("real world usage")
Battery bank "A" (wall charges at ~9.7W): 1.87A @ 4.87V = 9.11W
Battery bank "B" (wall charges at ~7.77W): 1.22A @ 4.95V = 6.04W
Bank "A" and "B" at the same time (2 ports):
"A": 2.05A @ 4.60V = 9.43W
"B": 1.01A @ 4.90V = 4.95W
Total: 14.38W

Just for fun, I added the dummy load on the 1A port while both battery banks were charging, and I was able to get another 0.56A @ 5.10V =... Read more

89 of 92 people found the following review helpful
5.0 out of 5 stars My experience with this charger felt like something out of a science fiction movie, October 23, 2016
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This review is from: BigBlue 5V 28W Foldable Solar Charger 3 USB Port Waterproof Outdoor Solar Powered Charger With SunPower Solar Panel for iPhone iPad Samsung Galaxy LG Cellphones Devices and More (Electronics)
Ok so i didnt know what to expect with this solar panel, some of the reviews said it charged very slow, so i had my doubts. I took my solar charger with me to the beach and decided to try and charge my phone, which was at 15% battery. After plugging my lg g4 into one of the three usb ports it instantly started charging and my phone indicated a healthy charge level. I was absolutely blown away by this solar chargers ability to charge my phone just as fast as a wall charger. In only an hour my phone was already 80% charged and some time after, fully charged. My experience with this charger felt like something out of a science fiction movie. I could not believe that solar technology had advanced to the the point where for only 40$ you can buy an ultra portable, super practical solar panel that will provide you with free electricity anywhere you go. Built very rugged, the description says its waterproof although i havent tested that out yet. Comes with carabiner clips to secure the panel... Read more

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