Technician A says most hybrids also have an auxiliary 12-volt battery to power conventional electrical items, such as lighting, wipers, sound systems, etc. Technician B says the DC-DC converter reduces some of the high voltage DC from the battery pack to 12-volt DC in order to charge the auxiliary 12-volt battery. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Both Technician A and Technician B are correct. Most hybrid vehicles do have an auxiliary 12-volt battery to power conventional electrical systems, and a DC-DC converter is used to step down the high voltage from the main battery pack to 12 volts to charge the auxiliary battery.

Technician a Says Most Hybrids Also Have an Auxiliary 12-Volt