Solar cases for iPad and iPhone are nothing new. We have covered plenty of them here in the past. The PowerBinder is another interesting solar charger. It lets you store paper, handouts, and everything else as well as iPads and tablets. As you can see in the picture, the product has a large solar panel on the cover and can charge most smartphones a couple of times with its 5300 mAh battery.
PowerBinder can serve as a stand for your tablet. It has optional built-in flash memory sticks. You can use the micro-USB port to charge your PowerBinder or rely on sunlight for power during emergencies. PowerBinder shows you how much battery it has left to make your job easier. This can be yours for $149.[where to get it]