American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 70
%0 Cells CAloride Cell \ -h … strength, without becoming unduly discharged, for one hour, it would be said to havea capacity of 20 ampere hours. This same cell, however, might give out 40 amperesfor half an hour, or 10 amperes for 2 hours. These batteries (sometimes called secondary batteries) derive their name from thefact…
Telegraph
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