Ключевые слова: abstract, accumulator, alkaline, art, battery, cell, charge, communication, correspondence, design, electric, electrical, electricity, energy, full, generation, graphic, icon, illustration, letter, lithium, load, mail, paper, philatelist, philately, positive, post, postage, postal, postcard, postmark, power, recharge, rechargeable, retro, shape, sign, stamp, supply, symbol, technology, vintage, voltage,