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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

Which of the following statements about battery ratings is true?

  1. The ampere-hour rating is defined as the amount of steady current that a fully charged battery' can supply for 1 hour at 80°F (26.7°C) without the cell voltage falling below a predetermined voltage.

  • The cold cranking amps rating represents the number of amps that a fully charged battery can deliver at 0°F (— 17.7°C) for 30 seconds while maintaining a voltage above 9.6 volts for a 12 volt battery.
  • The cranking amp rating expresses the number of amperes a battery' can deliver at 32°F (0°C) for 30 seconds and maintain at least 1.2 volts per cell.
  • The reserve capacity rating expresses the number of amperes a folly charged battery at 80°F can supply before the battery’s voltage falls below 10.5 volts.
  • To determine

    The correct statement about battery ratings.

    Explanation

    The Battery ratings help in determining the capacity of a battery. They are found on battery sticker and can be divided into a number of groups like:

    1. Cold cranking ampere: It is the most common rating of a battery. It is defined as the ability of a fully charged battery at 0°F (-17.7° C) to deliver the amount of current for 30 seconds without dropping its voltage below 7.2 volts for a 12 volt battery.
    2. Cranking amperage: The cranking amp rating expresses the amount of current a battery can deliver at 32° F (0° Celsius) for nearly 30 seconds while maintaining a voltage of at least 1...

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