DIYbanter - View Single Post - Electric blankets, Gratuitous complexity??

whoyakidding's ghost

On Sat, 05 Jan 2013 13:46:52 -0500, wrote:

On Sat, 05 Jan 2013 07:31:24 -0800, whoyakidding's ghost
wrote:

On Fri, 4 Jan 2013 21:21:32 -0700, "Steve B" wrote:

When my two twelve volt batteries died, I got two mondo six volts and wired
them in series. They lasted a lot longer than the two twelves, and I would
suggest it to anyone who

... is dumb enough to take clueless advice.

is at a stage of buying two new twelve volt
batteries for their MH or TT. I can't explain the math

No ****?

, but it does give
you more amp hours. Costs about the same. Sure made a big difference in
our coach on how long the batteries would last between charges, and
intensity of lights.

Steve

LOL

Just so happens he is right

I'm right, period.

SteveB is a blatant racist. Racism is rooted in ignorance, and that
ignorance manifests in many ways such as giving advice on subjects he
doesn't have a clue about.

Apparently you're the type who tolerates racists and thinks that being
kind to them makes sense and that ridiculing them is mean. But if you
want to help him then for ****s sake at least correct the dumbest part
of his misconceptions.

MUCH
better to increase voltage by connecting in series that to increase
amps by connecting in parallel. A "battery" by definition, is a
series of cells connected in series.

The simple story here is that in the motorhome case he's talking
about, and considering equally priced series or parallel arrangements,
the battery _capacity will be the same_ which is something you failed
to note.

Parallel connection of cells is
much more likely to run into problems down the line.

In FACT it's highly UNlikely that two batteries in parallel will "run
into problems down the line" if properly maintained, as proven by
thousands of successful dual battery installations.

No matter series or parallel or anything else, motorhome battery
problems are most likely to be caused by inexperienced owners who tend
to run the bank down too low and fail to regularly charge it fully.
The last part largely because they don't even know the definition of
fully charged, or how to tell when it's been attained.

In my own motorhome I did 12V in parallel because I could get the best
deal on that from Costco, and because I wanted to expand the string to
all there was room for, which was 3 units.