Join Date: Jul 2000
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6 Volt, reserve vs weight
Don''t know what type of golf cart batteries you have seen, but the ones in my boat are not much heavier than the group 27 batteries (12v) that I replaced, yet they have about a 45 amp hour greater capacity.
Looking at the West Marine catalog, I see GC2 batteries (i.e. golf cart) are rated at 215ah (mine are 225ah) and are 10.25 x 7.125 x 10.8" and weigh 63.5 lbs. The group 27 batteries (12v) are rated at 90 ah and are 12.5 x 6.75 x 9.4" and weigh 53 lbs.
So a pair of the 6v batteries weigh 20 lbs more and give you 35 ah more capacity than a pair of the 12 volters.
Is that what you had in mind?