This product (ELECTRONICS ONLY) is a Mobile Cell Phone Battery Booster Charging Dock Station stripped back to just the functioning components, it has been specifically designed for hobbyist and 3D printer enthusiast. All you need to do is create your docking station, print your design, buy the electronics and fit it all together. Find the electronics for sale on ebay http://r.ebay.com/lcQTDa The product consists of four modules, three of modules makeup the functioning circuitry while the forth module is a battery. Of the circuitry modules, each of the PCBs where designed to provide you with infinite options to how their project might be configured. The circuitry consists of a main PCB, a control PCB and a PCB with a connector that suits most android phones (Micro-B USB).