You can buy an 8D semi truck battery from Sams Club
for $99 (as seen during my last visit some time back).
A similar capacity deep cycle battery runs 3x more
money typical.
If you keep the 8D battery cool and without abuse, you
can easily get a few years use and replace it every
2 to 3 years and not worry about it failing.
If you compare the discount cost of Auto/Truck batteries
vs the higher cost of some specialized deep cycle batteries,
you can make a case for using the cheaper auto/truck units
and changing them out more often (in years) to increase
reliability.
Also keep in mind the really high-end deep cycle "Station
Batteries" can remain in full service for decades.
cheers,
skipp
> [EMAIL PROTECTED] wrote:
>
> At 1/14/2006 10:14, you wrote:
>
> > > Given that batteries used in backup service rarely get cycled at
all,
> > > wouldn't car batteries be a more cost-effective choice?
(assuming the
> >gel
> > > cels were not a gift)
> >
> >What's your replacement and disposal costs?
> >
> >Car batteries and marine deep cycle batteries aren't that different in
> >price, and the deep cycle batteries are MUCH better at tolerating deep
> >discharges.
>
> My suggestion was under the assumption that car batteries were much
> cheaper, had better storage density & would only be deep discharged
once or
> twice over their lifetime. If none of this is true, then yes a deep
cycle
> battery would make more sense.
>
> Bob NO6B
>
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