icon, vector, symbol, icon set, design, clip art, illustration, design element, graphical user interface, line icon, outline, single line, line art, stroke - illness, alkaline, battery, battery charger, battery park, battery tester, business finance and industry, charging, electrical component, electrical equipment, electricity, electronics industry, energy efficient, fuel and power generation, lithium, lithium-ion battery, power bank, power equipment, power line, power occupation, power station, power supply, power in nature, rechargeable battery, sustainable energy, technology, timer, clock, time, clock face, instrument of time, obsolete,