Solar Paper allows you to expand it in the future if you need to charge larger devices. Our design solution was to create a set of folding solar panels held together using strong magnets. Only need two panels and want to save some weight? No problem. Just bought a tablet and need more wattage to charge it? Also not a problem.
There are a couple of other advantages of using magnets in Solar Paper, too. First, there’s no wear and tear on seams when you fold or unfold the panels, greatly extending Solar Paper’s life. The magnets are also quite strong, so you can use them to mount Solar Paper to metal objects, as shown in the picture