When using a battery load tester to conduct a battery load test, turn the control knob to draw battery current at a rate equal to which of the following ?

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When conducting a battery load test, the control knob should be turned to draw battery current at a rate equal to 1/2 of the battery's cold cranking amps rating. This is because cold cranking amps (CCA) is a measure of a battery's ability to deliver current at low temperatures, and drawing current at a rate equal to half the CCA rating provides a good measure of the battery's performance under normal operating conditions. Drawing current at a rate equal to the battery's ampere-hour rating or twice its ampere-hour rating is not appropriate for a load test, as it does not provide an accurate measure of the battery's performance. Similarly, drawing current at 15.5 volts for a 12-volt battery is not appropriate, as it exceeds the battery's normal operating voltage and can damage the battery.

When Using a Battery Load Tester to Conduct a Battery