nuckolls.bob(at)cox.net
Guest
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 Posted: Mon Nov 05, 2007 6:15 am Post subject: How small battery for the B&C BC320 starter? |
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At 09:18 PM 11/4/2007 -0500, you wrote:
| Quote: |
The TYPE is superior but there are other equivalent units to the Odysey
IMO such as the Dekka series by East Penn Mfg.
Even the 15AH one in my $30. Chinese automobile booster has survived much
more abuse than I expected. I've even run a 1 kw inverter off it for power
at the airport.
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| Quote: | Ken
Walter Fellows wrote:
>Wow, the website has a vicious set of pop-ups. This review seems to be to
>good to be true, is this one brand of battery really so superior?
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All comments and observations concerning
the relative "goodness" of batteries are,
no doubt, offered in good faith and honorable
intent. I am reminded of the words of a
learned gentleman named Lord Kelvin who
is reported to have said:
"Until you can measure something and express
it in numbers, you have only the beginning
of understanding."
This is a simple-idea . . . a truth that
stands up to skeptical scrutiny. Of course,
the same gentleman was heard to opine:
"Heavier-than-air flying machines are
impossible." and "Radio has no future."
Individuals of poor reasoning skills and/or
ulterior motive have used the later quotations
to cast doubt on the validity of the first.
Here is a simple lesson in separation of repeatable
experiment from un-quantified observation/
opinion where the later is unsupportable by
the former. This lesson also goes to the
notion that the words of no individual
should be accepted as gospel until and
unless the listener benefits from real
teaching where words are accompanied with
tools for understanding.
Batteries have recipes for success that
are affected by simple-ideas (physics),
design (engineering), craftsmanship
(willingness and skill to fully exploit
both physics and engineering) and to
a certain extent, marketplace actions
designed to minimize deleterious effects
on performance after the product leaves the
factory.
As consumers of products like batteries
with wildly varying prices, claims,
and anecdotal observations, we can only
be sure of data derived from repeatable
experiment scrutinized for flaws of
measurement or logic by which those
measurements are interpreted.
This is a rigorous exercise that few
individuals in both the supplier and
consumer side of the market are able
or willing to conduct . . . which leaves
us with tiny corks of data floating
on a sea of anecdotes and the self-
serving enthusiasm of those who would
hope to exchange your $time$ for their
product.
Bottom line is that any of us can
contribute to the wealth of knowledge
and ultimately understanding of any
product by giving it a try. Get some
rudimentary battery measurement tools . . .
http://www.aeroelectric.com/Pictures/Tools/Battery_Testers/HF_Carbon_Pile_Load.jpg
http://www.aeroelectric.com/Pictures/Tools/Battery_Testers/CBA2_1.jpg
then craft and conduct the experiment. If the
results of the experiment are interesting
and thought provoking, perhaps someone
else will endeavor to repeat the experiment
and validate, refine or refute the original
work.
Short of this effort, be mindful that
all other words describing experiences and/or
opinions about batteries are at best exceedingly
coarse data which cannot be depended upon
if ones choice of batteries has important
consequences for having made a poor decision.
Finally, unless one compares engineering data
for one product against the data of another
product, the website where any product is offered
for sale should be viewed with the most rigorous
skepticism.
Bob . . .
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