Abstract: A battery powered deposition system and process for applying aluminum, silver, and SiO films (and their derivatives such as aluminum oxide, aluminum nitride and silicon dioxide) especially for making broadband reflective coatings for mirrors. One or more filaments are wetted with a filament wetting material such as aluminum or a silver alloy. In a preferred embodiment filaments are heated quickly to a high temperature with an array of batteries and the filament wetting material is deposited as a reflective coating on the mirror.