Correct batteries?

Polaris

Member
Mar 12, 2013
50
Pasadena, MD
Boat Info
none
Engines
7.4 Mercruiser, 330 hp, Bravo III
I need to replace the batteries in my 1999 270SD. I can't find information on what was the original battery configuration. Anyone know the answer - or where to find it? Incidentally, my mechanic is telling me to NOT use a deep cycle battery.

Thanx.
 

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