Solar panel folds and is difficult to position. Panel also is very flimsy and I'm concerned about breakage. I battery days ago and have had it in full sun for two days. It has been overcast at times but has not gained a single bit of charge and says the same time remaining as the initial charge. I have it in the same place I have other solar charging devices to be used during storms. The charging cord plug into the device is awkward as well. You have to use a usb connector. I can see this easily being hit and knocked into and breaking. Unless it proves me wrong by tomorrow afternoon, it will most likely be returned. If it won't charge, it isn't worth having.

The solar aspect is really cool. It works Great! I was honestly surprised at how well the solar panels worked. I was charging the unit with the solar panels while the unit was charging my phone. I highly recommend this unit.

This device works well for small devices such as cell phones and rechargeable batteries. The battery charge hold is decent, but it takes forever to charge in the sun. It may charge better in the spring or summer when the sunlight density is much higher, but in the late fall and winter it will not sufficiently charge even with 8 hours of direct sunlight. I was only able to get between 34 to 52% charge from 8AM-4PM on sunny days with no clouds in mid November.