Electrolysis and Storage Batteries
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following

all H₂SO₄
two parts H2O, two parts H₂SO₄
one part H2O, three parts H₂SO₄
three parts H2O, one part H₂SO₄

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Electrolysis and Storage Batteries
Life of the batteries is in the following ascending order.

Edison cell, Nickel-cadmium cell, lead-acid cell
Nickel-cadmium cell, Edison cell, lead-acid cell
Lead-acid cell, Edison cell, Nickel cadmium cell
Lead-acid cell, Nickel-cadmium cell, Edison cell

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