Technician A says the best method for recharging the HV battery is to allow the HV system to replenish the battery. Technician B says if the DC/DC converter malfunctions, the auxiliary battery voltage will drop until it is no longer possible to drive the vehicle.
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the high-voltage (HV) system in hybrid and electric vehicles is designed to recharge the HV battery through regenerative braking and other methods, making it the most efficient and designed method for recharging. Technician B is also correct because the DC/DC converter is responsible for converting high voltage from the HV battery to the lower voltage needed to charge the auxiliary (12V) battery and power vehicle electronics. If it malfunctions, the auxiliary battery will not be recharged, leading to a drop in voltage and potentially rendering the vehicle inoperable.

Technician a Says the Best Method for Recharging the HV