BATTERY

  • Tiny
  • KGetz
  • 2001 Ford Escort
  • 132,000 miles

Is it true that when a car is running, the battery supplies the power to the car and the alternator recharges the battery as it drains?

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Thursday, August 2nd, 2012 AT 5:50 PM

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  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Not really that way. The alternator supplies whatever current is required and the battery acts as a backup. It also helps to stabilise the voltage though the voltage regulator is the main controller.

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Thursday, August 2nd, 2012 AT 6:02 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,273 posts

The alternator feeds directly to the battery and reads battery demand to determine charging rate.

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Thursday, August 2nd, 2012 AT 6:22 PM

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