USB chargers for bikes that are connected to the dynamo have become an essential accessory for cyclists who never want to run out of juice on their smartphone, GPS navigator or tablet. Technology has also taken over our beloved bicycles and having a satellite navigator with you is a great convenience, but modern electronic devices, pocket-sized and with many functions, consume energy and batteries have short lives. The solution to flat batteries is the bike dynamo charger, a small transformer that connects to the dynamo hub and allows you to recharge all electronic devices. In our online shop, you can find only the most reliable and safe USB GPS chargers currently available. This system, for charging the mobile phone and all the other devices, has really revolutionised our experience with bicycles. It is no longer necessary to keep our smartphones off for fear that the battery will run out because thanks to modern USB dynamos all the energy we need is generated without producing any friction. Each USB charger for dynamo is equipped with stable supports, mounting kits and connection cables, so that it can adapt to every bicycle or device.