[AT] Batteries charged backwards.

[Howard Pletcher]

If you're talking about an inexpensive load tester, I'm not sure the
construction will handle a long time with current applied--not even a
minute.  The one I'm thinking of gets hot very quickly and the load coil is
supported by some sort of fiberboard that I wouldn't expect to hold up very
long unless the battery is already pretty well discharged.

Howard

On Wed, Feb 12, 2020 at 7:53 PM Cecil Bearden <crbearden at copper.net> wrote:

> I have a load tester around here, that is what I need..  Thanks Carl.
> Now when it dries up I can get around here to find it...   Mud is deep
> right now...
> Cecil
> On 2/12/2020 4:18 PM, Carl Gogol wrote:
>
> Cecil,
>
> Wondering if a battery load tester would be a good load to draw a battery
> down?  Perhaps the duty cycle is too low, don’t have mine handy not look at
> right now.
>
> Carl
>
> Manlius, NY
>
>
>
> *From:* AT <at-bounces at lists.antique-tractor.com>
> <at-bounces at lists.antique-tractor.com> *On Behalf Of *Dean VP
> *Sent:* Wednesday, February 12, 2020 3:26 PM
> *To:* Antique Tractor Email Discussion Group
> <at at lists.antique-tractor.com> <at at lists.antique-tractor.com>
> *Subject:* Re: [AT] Batteries charged backwards.
>
>
>
> Cecil,
>
>
>
> A 12v light doesn't draw that much current. So will have to be on there
> for days And then that might draw it down enough to be able to reverse the
> charge. After it has drawn down on the 12 v bulb go to a 6 v bulb. You need
> to get it down to "0" to be able to reverse the charge.  Don't worry about
> connecting a fully charged 12V battery in parallel with a dead battery.
> Normal battery jumper cables are usually not a very big gauge and combined
> with the internal resistance of the batteries the current will be self
> limiting and not damage anything. If hooking running car batteries to other
> dead batteries with jumper cables destroyed good batteries the battery
> companies would be going nuts. In my experience you don't need it connected
> very long to get the dead battery voltage up enough to where a smart
> charger can take over.  I have run into this often enough after my old
> "dumb" charger went belly up that I was on the lookout for an old  used
> "dumb" charger to replace one that served me faithfully for over 40 years.
> Just a month ago I was at an auction here in AZ and danged if there wasn't
> one that looked like the one I had. Paid $5 for it so the world is now back
> to its normal orbit again.  Works like the old one. Some days go better
> than others.
>
>
>
> Sent from AT&T Yahoo Mail on Android
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>
>
>
> On Wed, Feb 12, 2020 at 11:53 AM, Stephen Offiler
>
> <soffiler at gmail.com> wrote:
>
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