Ключевые слова: alternative, battery, black, bright, cell, chain, charge, clear, control, digital, diode, electric, electrical, electricity, electronic, emitting, energy, flashlight, hand, illumination, isolated, key, lamp, led, lighting, microlight, miniature, object, panel, personal, photovoltaic, pocket, power, renewable, ring, small, solar, source, supply, tech, technology, tool, voltage, white,