Ключевые слова: accumulator, alkaline, art, battery, black, button, charge, charger, charging, circle, color, colorful, contour, cylinder, design, electric, electrical, electricity, energy, equipment, flat, fuel, full, generation, glass, green, high, icon, illustration, indicator, isolated, level, lightning, line, linear, lineart, load, metal, mobile, object, outline, power, recharge, sign, source, supply, symbol, technology, voltage,