Early 2000s: Deep cycle or dual-purpose batteries

November 9, 2011  | by: Christi Cowan

Deep cycle batteries make it practical for drivers to draw from the batteries during rest periods without shortening battery life. This can eliminate overnight idling or the need for other alternative power systems.

Redesigned from lead-acid batteries of the past, deep cycle batteries use thicker plates, or a new design called absorbed glass mat.

Prior to the need for the batteries to supply hotel-type power, the emphasis in battery design was cold cranking amps, which require a maximum lead surface area provided by thinner plates. When repeatedly discharged to a low voltage, the thin plates would deteriorate.

Compromising on CCA and installing thicker plates, manufacturers were able to develop “dual purpose” batteries with both deep cycling ability and adequate CCA.

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