Edison–Lalande cell
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The Edison–Lalande cell was a type of alkaline primary battery developed by Thomas Edison from an earlier design by Felix Lalande and Georges Chaperon.[1][2] It consisted of plates of copper oxide and zinc in a solution of potassium hydroxide. The cell voltage was low (about 0.75 volts) but the internal resistance was also low so these cells were capable of delivering large currents.[3] The cell could be replenished with fresh zinc and copper oxide plates and KOH solution for reuse.