OK, I'm ready for the final report on this thing now. There are a few things I don't like about it. Like I stated earlier, it's really a battery with a solar panel attached to charge it. Once you get the battery charged you can than download the charge to your cellphone or other device. You can either be charging the device or discharge it into your phone, but not both at once. And you can't just charge your cell phone directly under the sun. You have to charge the device first and then transfer the charge into the phone. All this takes a lot of time.
There are four indicator lights on the device which are supposed to let you know the level of charge, but these lights don't seem to work. Bummer. Once the device gets charged it will charge my phone in a couple of hours. I don't know how long it takes to fully charge the device due to the indicator lights not working. Once it is charged it will only charge the phone 1 time and then you have to put it back in the sun.
Overall I would say it was probably a waste of money. It is far more practical to just install a charging plug on the bike and plug the phone into it. I suppose if you were on an extended hike or camping trip with no other source of electricity this thing would probably be useful but it's not worthwhile for my purposes.
Oh well, another gadget to play with. It still serves a purpose as a spare battery of sorts. Hope this is helpful and sorry it took so long to get the report.
Jeff in Illinois