[AT] Batteries charged backwards.

[Thomas Martin]

Hi Cecil
I  consulted a very good friend on the other-side of the isle.
Tony is auto-electrician, of vast car, truck & tractor experience.
He says you MUST discharge the batteries, separately with a bulb.
They need to completely discharged. No measurable voltage.
Then one battery at a time needs to be placed in parallel with another 
fully charged 12v battery, they then need to be connected to a 12v 
charger...

Tom

> On 12 February 2020 at 15:31 Cecil Bearden <crbearden at copper.net> wrote:
> 
> 
> 
> > I had 2 group 31 batteries out of the tractor that were completely 
> > dead.  I hooked them up in series and connected my 24Vcharger to them 
> > as It was handy and I wanted to charge both.  After a couple of days I 
> > checked them and found that I had hooked the charger backwards.  I 
> > hooked a couple of incandescent headlights to drain the battery, but 
> > after 3 days they won't light up the headlights, but they still have a 
> > lot of spark when shorted with cables..  A guy at my battery shop said 
> > I should hook up a 6volt light to them and use that to run them 
> > down....  At $100/ea, I need to try to save these...
> > Cecil
> _______________________________________________
> AT mailing list
> AT at lists.antique-tractor.com
> http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com