Posted by a reviewer on Amazon

If you dont believe it look at a goal zero 20 watt panel

Posted by a reviewer on Amazon

However with overcast the charge is super slow

Posted by a reviewer on Amazon

And its a smart port meaning it detects what device is plugged in and charges accordingly

Posted by a reviewer on Amazon

If you want to just lay these on the ground with your phone or something attached then i cant say these are for you

Posted by a reviewer on Amazon

I ended up returning these panels because i wanted to store all of the power i gathered in a day with a power bank and charge my phone at night with the power bank however after giving the panels the best possible conditions for 7 hours its autumn so the days arent very long i plugged my tablet in and it didnt even give it a fulll charge

Posted by a reviewer on Amazon

If you need a good charge from these then youll need to put your phone out with the panels

Posted by a reviewer on Amazon

The solar panel arrived in 24 hours after ordering on prime

Posted by a reviewer on Amazon

Even with intermittent clouds the solar panel continued to provide power to the devises i was charging