C30 start battery recommendation

Oct 11, 2019
28
Catalina 30TRBS New Bern
Have a '86 C30 repowered with a Yanmar 2GM... currently Interstate lead acid start and house banks. When leaving Sunday I noticed the start battery is dead (4V). Current lead acid is 7 years old and gets used infrequently (currently), what is a good recommendation for a new one? Group 24? G27? I did not record the size and I'd like to bring one with me this weekend to replace (city pricing vs marina pricing).
 

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RitSim

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Jan 29, 2018
430
Beneteau 411 Branford
I used to have two GP 27. Charged both with a solar panel left on the cockpit seats
 

RitSim

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Jan 29, 2018
430
Beneteau 411 Branford
Have you done the cockpit rewire? can't remember when the wiring changed. Details are fuzzy but available online. But the older wiring had a main current wiring travelling to the cockpit. Also need to eliminate "gummy" plugs (one in the motor bay and one behind the cockpit panel)