Power distribution or control machines and apparatus; rotary converters; phase modifiers; batteries and cells; solar batteries; magnetic cores; resistance wires; electrodes for laboratory research and fuel cell electrodes; high tension batteries; chargers for electric batteries; galvanic batteries; plates for batteries; primary batteries; accumulator batteries; batteries for vehicle; photovoltaic cells; cathodes; accumulator jars; accumulator boxes; battery boxes; lead plates for batteries; cathodic anti-corrosion apparatus.