Hi, I've been thinking up a project on harnessing the kinetic energy to use for charging or powering small deviecs around the house firstly my laptop and smart phone. I have a basic idea of what I'm going to use and have some of the things needed. My idea was to use a small brushless or maybe bushed alternator to charge a lipo battery then to power or power the charger of my phone or laptop. I have two 5000mah 7.4v lipo batteries to store the power then to convert or direct use (the laptop uses a 7.4 li-ion battery) but need to investigate the alternator and something to control the charge going to the batteries from the alternator. I'm aware of the process of charging a lipo battery but am unsure if such device designed to use with an alternator is available (like an alternator for a motorbike using a lipo in place of a lead acid battery). Thanks for any feedback, Drew.