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Old 31-01-2018, 02:10   #1
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Group 24 or 27 or ?

Hello all,
I've been trying to find info on choosing my starting battery. I need to replace the current one.

I have a Volvo Penta MD7A, which is 13.5 hp. Is a Group 24 battery sufficient ? Is there a rule of thumb for this ?

Thanks in advance for your time.
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Old 31-01-2018, 02:44   #2
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Re: Group 24 or 27 or ?

A Group 24 worked fine for my Yanmar 3GM30F. Should work just as well on the smaller Volvo.
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Old 31-01-2018, 03:17   #3
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Re: Group 24 or 27 or ?

If you want to get technical here is a web site that you can calculate the CCA for your particular engine.
http://www.allnesales.com/hopp-FNCEH.pdf
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