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   rec.autos.tech      Technical aspects of automobiles, et. al      117,728 messages   

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   Message 116,385 of 117,728   
   Michael Trew to Scott Dorsey   
   Re: Car battery testing over double 12 v   
   24 Dec 21 22:25:31   
   
   From: michael.trew@att.net   
      
   On 12/24/2021 15:24, Scott Dorsey wrote:   
   > Michael Trew  wrote:   
   >> On 12/23/2021 21:07, Scott Dorsey wrote:   
   >>> Michael Trew   wrote:   
   >>>>   
   >>>> Finally, I pulled it this evening and threw another tested good (checked   
   >>>> 12.7 v) battery in the car.  I am about to go drive to my evening shift   
   >>>> at work.  I decided to test the old battery with the same voltage   
   >>>> tester, and it tested at 27 V!!  I can't find any info on a web search   
   >>>> about this issue.   
   >>>   
   >>> Was it a Fluke?   
   >>>   
   >>> What did it test as with a small load?   
   >>   
   >>   
   >> I jumped the gun.  The voltage meter was on the wrong setting.  I didn't   
   >> think that the meter was on the wrong setting, because the newer battery   
   >> that I pulled out of another car happened to test at exactly 12.7 V on   
   >> that same wrong setting.  What a coincidence.   
   >   
   > Because you had it on the AC setting and it wasn't a Fluke?   
   > --scott   
      
   Yes.  I believe it was set to "200" A/C instead of "20" D/C.   
      
   Surprisingly, I was able to use a huge old heavy duty battery charger to   
   bring the 2.4 volt battery (the new one) back to life.  Hopefully I   
   didn't damage it too much by letting it drain down that far.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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