Dual battery replacement- Advice needed

Had a Century 760CCA cranking battery fail dead as a doorknob on me on Sunday. Was perfect on Saturday. 1 month out of 24 month warranty. Would not even take a charge. Glad it was in driveway.

Quote:

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Originally Posted by Dagilmo

Do mean as a second battery? I've got a specialised starter as the starter. My long winded OP really was asking what's the best way to add capacity to the second battery set up?

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Oh OK, I misunderstood.