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How does temperature affect discharge of a battery?
- Nov 29, 2018 -

The 23A/27A series is an assembly of 1.5V alkaline button cells which use KOH as the electrolyte. As a type of aqueous solution, KOH determines that discharge performance of the batteries will change with temperature. The figure below shows how a 27A battery discharges at different temperatures.


According to the figure above, lower temperatures reduce the discharge time. That is because molecular activity drops when temperature approaches its freezing point of KOH. To the contrary, if temperature is exceptionally high, vapor pressure increases quickly inside the battery and thus degrades discharge performance.

       It is suggested that 23A/27A batteries be used in a temperature range of 10oC to 45oC. 

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