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What is the pulse cranking amp rating (PCA)?

April 26, 2017AMP cranking PCa pulse rating

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What is the pulse cranking amp rating (PCA)?

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Unlike CCA and MCA the pulse cranking ampere (PCA) rating does not have an “official” definition; however, we believe that for true engine start purposes, a 30 second discharge is unrealistic. With that in mind, the PCA is a very short duration (typically about 3 seconds) high rate discharge. Because the discharge is for such a short time, it is more like a pulse.