Re: Golf cart batteries

That was just a response to your comment:

"It requires high voltage for a period of time to break down the
hard sulfate and get charging current going again."

I think that is what an equalization charge is all about. It does what you
say in bringing back more of the original capacity.


"Neon John" <no@xxxxxxxxx> wrote in message
news:88ovo1ddj2in3bn7cnvcii39vuiahbdid6@xxxxxxxxxx
> I suppose. But what we're discussing is NOT an equilization charge.
> What we're discussing is bringing a dead flat battery back from the
> high impedance state.
>
> John
>
>
> On Thu, 01 Dec 2005 18:27:59 GMT, "Rich256" <nospam@xxxxxxxxxx> wrote:
>
> >Equalization charge is well explained in Section 9:
> >
> >http://www.uuhome.de/william.darden/carfaq.htm
> >
> >
> >"Neon John" <no@xxxxxxxxx> wrote in message
> >news:54fuo1508fj7thpppnj7kmd143gn5atqda@xxxxxxxxxx
> >> A battery that has been flat dead for awhile is in a high impedance
> >> mode. It requires high voltage for a period of time to break down the
> >> hard sulfate and get charging current going again.
> >>
> >> I included a "recovery" mode in my CBC for that purpose. Current
> >> limited 24 volts, to be precise. That'll usually bring a 12 volt
> >> battery back up to accepting a charge in a half hour, a 6 volt one a
> >> little faster. 12-15 volts on a 6 volt battery will probably take a
> >> couple of hours. The 7-8 volts that a 6 volt charger outputs may not
> >> do it ever or if it does, it'll take a day or more.
> >>
> >> I haven't collected enough data to give a firm opinion but I think
> >> that using high voltage to bring a dead battery back does a better
> >> job. That is, it brings back more of the original capacity.
> >>
> >> John
> >>
> >> On Thu, 01 Dec 2005 15:03:19 GMT, "Rich256" <nospam@xxxxxxxxxx> wrote:
> >>
> >> >How about using 6 volt mode? Get the batteries up to that voltage and
> >the
> >> >smart charger should work.
> >> >
> >> >
> >> >"Jim Corey" <jcorey@xxxxxxxxxxxx> wrote in message
> >> >news:onvjf.28947$tV6.13499@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >> >> Thanks. I KNEW there had to be a work-around.
> >> >>
> >> >> Jim
> >> >>
> >> >>
> >> >> "Neon John" <no@xxxxxxxxx> wrote in message
> >> >> news:oqqso15bk26eo494ou15nq2o10jm8uf0hl@xxxxxxxxxx
> >> >> > Give it a try. The thermal overload built into most "dumb"
chargers
> >> >> > will cycle and will fail after awhile but you might get away with
it.
> >> >> >
> >> >> > The best thing to do is to put some sort of load in series with
the
> >> >> > charger to absorb part of the voltage. A headlight would be a
good
> >> >> > choice. A 12 volt headlight will pass about 5 amps from about 6
to
> >> >> > about 14 volts. A dumb charger usually has 14+ volts available so
the
> >> >> > lamp should work fine.
> >> >> >
> >> >> > John
> >> >> >
> >> >> > On Thu, 01 Dec 2005 02:06:00 GMT, "Jim Corey"
<jcorey@xxxxxxxxxxxx>
> >> >> > wrote:
> >> >> >
> >> >> >>(This is On Topic, because I use the cart in my home park.)
> >> >> >>
> >> >> >>I have a Club Car electric cart. It uses 6 8V batteries; when I
got
> >> >the
> >> >> >>cart, the almost-new Trojans were dry. Damn. I took them to a
> >battery
> >> >> >>shop
> >> >> >>and had them slow charged, to at least get me going. That was a
year
> >> >ago!
> >> >> >>I returned after a 3 month absence, and the batteries are dead-o.
The
> >> >48V
> >> >> >>charger won't activate on fully-discharged batteries (a design
> >feature
> >> >of
> >> >> >>the charger!). I'd like to get the batteries charged up enough so
> >that
> >> >> >>the
> >> >> >>charger will activate; then I can drive the cart into its storage
> >shed,
> >> >> >>and
> >> >> >>replace the batteries in the spring. The problem: my chargers
only
> >> >> >>output
> >> >> >>6V or 12V. Can I charge an 8V battery for a short period of time
at
> >> >12V?
> >> >> >>At what amperage, and for how long? I don't want to pull the
> >batteries
> >> >and
> >> >> >>take them to a shop; I'm tired, the batteries are heavy, and the
> >shop
> >> >is
> >> >> >>30
> >> >> >>miles away.
> >> >> >>
> >> >> >>Jim Corey
> >> >> >>'91 Southwind
> >> >> >>'63 Corvair Convertible toad
> >> >> >>
> >> >> > ---
> >> >> > John De Armond
> >> >> > See my website for my current email address
> >> >> > http://www.johngsbbq.com
> >> >> > Cleveland, Occupied TN
> >> >>
> >> >>
> >> >
> >> ---
> >> John De Armond
> >> See my website for my current email address
> >> http://www.johngsbbq.com
> >> Cleveland, Occupied TN
> >
> ---
> John De Armond
> See my website for my current email address
> http://www.johngsbbq.com
> Cleveland, Occupied TN


.

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