Battery test

Tiny
DIVIDES
  • MEMBER
  • 2010 PORSCHE PANAMERA
  • V8
  • 4WD
  • AUTOMATIC
  • 86,000 MILES
Can you do a load test while terminals connected? Or do they need to be removed and why?
Monday, January 3rd, 2022 AT 4:07 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,752 POSTS
Yes, standard procedure is to leave the cables connected when testing a battery in the vehicle. In this manner, the cable connections will be included in the test. Should the battery fail this way, the cables will be disconnected, then the test should be repeated, possibly after charging the battery for about a half hour.

https://www.2carpros.com/articles/car-battery-load-test

https://www.2carpros.com/articles/how-a-car-battery-works

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked
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Monday, January 3rd, 2022 AT 4:25 PM
Tiny
DIVIDES
  • MEMBER
  • 898 POSTS
Thanks.
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+1
Monday, January 3rd, 2022 AT 4:38 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,752 POSTS
Happy to help. Please come back to see us next time.
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Tuesday, January 4th, 2022 AT 5:57 PM

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