After years of promises, advertising, and development, technology that can charge electronics from across the room or through walls is finally available for purchase. Ossia’s Cota wireless charging technology will begin appearing in devices from French electronics firm Archos later this year, according to Ossia Chief Executive Doug Stovall in an interview from the CES show floor in Las Vegas this week.  Prices have not yet been announced by Archos. The availability of products based on Ossia and Energous technology demonstrates the maturity of charging systems that do not require a physical connection to a power source.