Alkaline batteries

Alkaline batteries are based on an electrochemical system of Zn/MnO2. However, as an electrolyte, they use a 30% aqueous solution of potassium hydroxide or sodium hydroxide. In order to reduce the dissolution of the zinc in the hydroxide, a small amount of zinc oxide is added. The main advantage of alkaline batteries is their constant capacity over a wide range of discharge currents. Alkaline cells have a voltage of 1,5 V.


Their energy density is approx. 300Wh / l, and the operating temperature range is from -20 to +55 Co.


Due to similarity in their electrochemical system, alkaline batteries can be used anywhere where conventional batteries are used. Button-cell alkaline cells are successfully used as a cheaper alternative to zinc-silver batteries. Serial linking of alkaline button-cell batteries is used for the production of small-sized high-voltage batteries: 6V, 9V and 12V. Such batteries are often encountered in remote control units and lighters.

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baterie alkaliczne