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

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   Message 116,498 of 117,728   
   Andy Burnelli to Scott Dorsey   
   Re: Alternator at 20 volts   
   07 Feb 22 05:39:00   
   
   From: spam@nospam.com   
      
   On 6 Feb 2022 20:11:18 -0000, Scott Dorsey wrote:   
      
   >>Is it common for a shop to have a setup that can spin up an alternator?   
   >   
   > Yes.  Any auto electrical shop will have a test rig for alternators and   
   > starters.   
      
   Almost every auto parts store by me has a tester for battery & alternator.   
   a. If the car can be driven, you drive it there.   
   b. They test the battery in the car with the engine not running.   
   c. They test the alternator in the car with the engine running.   
      
   I generally go to multiple stores (if I can) because they're kind of sleazy.   
   They want to sell new batteries and/or new alternators.   
      
   Nonetheless, _all_ will test the battery and alternator off the car too.   
   a. They have a machine that runs the alternator on a belt.   
   b. They plug in a special plug (different for each alternator).   
   c. And the readout tells them what it finds wrong.   
      
   My advice is before you go, charge the battery overnight if you can.   
   Otherwise they'll put it on a charger for you but that takes a couple of   
   hours as they can't reliably test a battery without it being charged.   
      
   Be advised, there are core charges for both battery & alternator.   
   Generally you get a new battery if it needs one.   
   Generally you get a rebuilt alternator if it needs one.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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