A Lead Acid Battery is a common type of battery that uses Sponge Lead (Pb), Lead Peroxide as Electrodes and dilute sulphuric acid as the electrolyte. Deep cycle Lead acid batteries are commonly used as Solar Batteries. Lead Acid batteries are most economical for large power applications where weight is of little concern. They are simple to manufacture, reliable and have low self discharge.
Lead Acid Battery – Definition, Glossary, Details – Solar Mangoadmin