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Which voltage should be maintained during a load test?

  • A.Above about 9.6 volts at normal temperature
  • B.Above 12.0 volts, below which the battery is considered discharged and therefore incapable of cranking the engine
  • C.Above 10.5 volts
  • D.Above 11.0 volts, which corresponds to the minimum required by the engine management system during the cranking

Answer: A

A sound battery holds above 9.6 volts through a fifteen second load test at twenty five degrees. The cranking limit of 10.5 volts is genuinely used as a criterion during starter testing, which makes that option a real figure from a related test. The shared behaviour explains why these belong together and the differences explain why both exist. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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