We don't need to emphasize how important it is that your mobile device has a sufficiently charged battery when you take it on the go. But once you're on the road, it's often not easy to find a place where you can charge your smartphone or tablet. The Solartab charger therefore relies on a thousand-year-old and inexhaustible source of energy - the sun. It also has an auxiliary battery that stores solar energy for when the sun is behind the clouds or when you are visiting the other side of the world.