An acceptable charging circuit voltage on a 12-volt system is ________.
a. 13.5 to 15.0 volts
b. 12.6 to 15.6 volts
c. 12 to 14 volts
d. 14.9 to 16.1 volts
a. 13.5 to 15.0 volts
The charging system voltage should be within 13.5 to 15.0 volts according to most vehicle manufacturer's specifications. Answer b is not correct because 12.6 volts is too low and 15.6 volts is too high and could damage the battery. Answer c is not correct because 12 volts is too low a voltage to adequately charge the battery. Answer d is not correct because the voltage is too high and could damage the battery and some electrical devices in the vehicle.
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