Why Lead-Acid cell voltage is 2.1 volt, why we can not
chenged it cell voltage by using extra row-material, only
incries its AH.

Answer Posted / kj

The voltage is caused by a chemical reaction. This reaction
can not produce a higher voltage. By putting more rows of
plates it does not change the reaction to increase the
voltage only the amount of current that can pass through
the cell.

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