when was the first dry cell battery invented
History of the battery In 1886, Carl Gassner obtained a German patent[13] on a variant of the LeclanchÃ© cell, which came to be known as the dry cell because it did not have a free liquid electrolyte. Instead, the ammonium chloride was mixed with plaster of Paris to create a paste, with a small amount of zinc chloride added in to extend the shelf life. The manganese dioxide cathode was dipped in this paste, and both were sealed in a zinc shell, which also acted as the anode. In November 1887, he obtained U.S. Patent 373,064 for the same device.
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Alonso Álvarez de Pineda