A lead-acid battery is a type of rechargeable battery that uses plates made of lead and lead oxide submerged in an electrolyte solution of diluted sulfuric acid.
It works by converting chemical energy into electrical energy. Lead-acid batteries are commonly used in automobiles, as well as in backup power supplies, solar power systems, and uninterruptible power supplies. They are relatively low-cost, provide high currents, and are highly reliable.
However, lead-acid batteries require maintenance, as they can discharge if not charged periodically.