[TR] what is going on?????

bill beecher notakitcar at yahoo.com
Sat Jun 13 21:21:37 MDT 2020


Yes, it is possible to charge a battery backwards. 

Serenity Now......

On Jun 13, 2020, at 9:55 PM, dave <dave at ranteer.com> wrote:


We bought a car a few months ago (an 88 jeep actually).  Wasn’t running or driving, needed some work, battery was dead.
 
Today we finally got it running and driving using a known good battery from another car.
 
Set the jeep’s battery up on a charger a day or two ago and decided to try it in the jeep after all we succeeded in getting it running and driving.
 
Hooked up the positive first, then touching the negative caused a spark!!!!
 
Double checked that we had the ground to the engine and the positive to the electrical system.
 
The multimeter, with the red on the positive terminal and the black on the negative, read -9.97
 
Reversed it and got 9.97.
 
Checked the good battery – no, the multimeter is not broken.
 
Checked the jeep’s old battery again, same results.  Good battery – same results (about 12.97)
 
What is going on????  how is this possible?  Yes, we are replacing the battery but if someone had told me this story I would have told him he must have mixed up the terminals, that its not possible.
 
Can anyone explain this to me?
 
And yes, we are replacing the battery
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