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From: Robin Brueckner (no email)
Date: Sat Feb 02 2008 - 08:07:26 EST
"I also have read that some manufacturers use different mixes of acids and
acid concentrations so specific gravity can vary among brands...."REPLY:
Interesting. Could you suggest where you found that?
I read it around 1998 or 1999. I don't remember.
When I bought my Hatteras in 1998 I read a LOT about batteries to see if I
could learn enough to actually make an informed choice among battery brands. I
was buying six or seven 8D's. I determined that for the most part I could not
because the technology, materials, fabrication and chemicals involved were not
only not readily available for many brands but because even if I could
determine them it would not be possible to make an informed choice. In fact
at
the time I could not even figure out for sure which "deep cycle" batteries
really were deep cycle. Getting specs was tough; Inerpreting them, even more
so.
"Does the use of deep cycle batteries for starting result in shorter life.."
It's possible but very unlikely. Just figure the power(amp hours)
delivered to an engine that starts promptly...it's insignificant.
And besides, I have house batteries that are never used for
engine starting and they weaken identically to those banks I
use for starting. I believe the reverse is far more true: that starting
batteries do not serve well as dual purpose batteries.
The only thing I'm certain about is that (a) Rolls Surrette have a great
reputation for long life and cost a bundle, (b) AGM type
according to the trade delivers the lowest cost per amp hour
delivered...and they are high initial cost as well, (c) I have
no idea whether (a) or (b) is the best value. (d) People seem to think Sam's
Club golf cart batteries are a good value.
Rob Brueckner1972 Hatteras YF for sale
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