Ключевые слова: 18650, accumulator, battery, battery pack, black plastic holder, blue, board, box, capacity, cell, chalk, charge, chemical, chip, color, component, computer, dark background, digital, electric, electrical, electricity, electronic, electronics, energy, holder, ion, left, li ion, liion, lithium, mah, pack, part, poles, power, power pack, recharge, rechargeable, school, semiconductor, signal, supply, switch, table, transistor, voltage, work,