How does the Cold Cranking Amperage rating help me select a battery?

CCA is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0F before its voltage drops to unusable levels. A 550 CCA battery can supply 550 amperes for 30 seconds at 0F. This rating is only useful in the selection of engine starting batteries.

NOTE: Do not confuse Cold Cranking Amperage (CCA) with Marine Cranking Amperage (MCA) or Cranking Amperage (CA). MCA and CA is a higher battery rating measured at warmer temperatures. More.

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