The humble Lead Acid battery was invented way back in 1859 by French physicist Gaston Plante and is the oldest type of rechargeable battery. Batteries are made up of cells. A cell consists of negative and positive Lead plates immersed in an electrolyte (solution of sulphuric acid and water). A Lead Acid cell produces 2V and 6 cells are commonly linked in series to provide 12V. Over the years advances have been made in plate design and construction. Sealed batteries have become very popular as batteries tend to be hidden away making maintenance difficult. Please select from the batteries below to find out more about their construction and performance.