The History of Ni-Cad Batteries
A Swedish inventor named Waldmar Jungner came up with the nickel-cadmium battery in 1899. Back then, the materials were expensive compared to other battery types available and its use was limited to special applications. In 1932, the active materials were placed inside a porous nickel-plated electrode and in 1947 research began on a sealed nickel-cadmium battery. Rather than venting, the internal gases generated during charge were recombined, giving us the batteries we now use.
admin @ March 19, 2008