Why Lead-Acid Batteries Rule

Lead-acid batteries are still the best choice for starting cars and trucks. The Engineer Guy explains why this is true, in spite of the development of many other battery types.

He shows the inside of a motorcycle lead-acid battery, removes the lead and lead-oxide plates, and shows how they generate a two volt potential difference when placed in sulfuric acid. He explains how the build up of lead sulfate between the plates will make the battery unusable if it discharged completely.

He then describes  how to make a deep cycle lead-acid battery for collecting solar energy.