I've had this product for about a month...I have to say I'm greatly disappointed, at least in its solar charging capability. The first time I tried to charge it in the sun I left it out for a whole day, only got 5% charge on my phone. Same results after several one-day attempts. So then I left it in the sun for over a week, and I got a 10% charge. It's a differently story when I charge it through my computer. A 3-4 hour charge will give you 60, 70, even 80 percent on your phone. But as a solar charger, this product needs to be taken back to the drawing board.