Abstract: This invention is a “power” toolbox for vehicles that charges power tools and batteries while the vehicle is driven. A preferred embodiment is intended to be placed in a pick-up truck bed. The toolbox is coupled to the vehicular automotive system, and electrical power is delivered through electrical contacts in the toolbox to modular compartments that hold power tools or batteries in a nested fashion. When the vehicle is running, any battery or tool coupled to a compartment is charged. The compartments may be of different shapes and sizes and may include electrical circuitry to modulate the voltage and current from the vehicular electrical system. An optional manual switch is provided to disengage the toolbox from the vehicular electrical system.

Abstract: The present invention includes a means for charging the battery of an electronic device by converting acoustic energy to electrical current. In one preferred embodiment, the protective layer of a liquid crystal display screen has a magnetic material disposed thereon. The housing of the liquid crystal display includes a corresponding coil of wire. As the protective layer has freedom of motion given by the liquid crystal panel, when acoustic energy is incident upon the protective layer, the protective layer moves, causing the magnetic material to generate a changing magnetic field in the coil. In an alternate embodiment, the protective layer is connected to piezoelectric transducers. When acoustic energy is incident upon the protective layer, the piezoelectric transducers are actuated. In another embodiment, the electronic device comprises an input for receiving concentrated acoustic energy from various sources including loudspeakers and acoustic waveguides.