Hybrid and even electric vehicles have two batteries. The hybrid battery can output more than 200 volts and power the electric motor. The 12-volt battery powers the conventional automotive systems like lighting, sensors and ABS. The 12-volt system is used to control the hybrid system. In this video, we discuss where is the 12-volt battery and why it is important to test the battery. This video is sponsored by Auto Value and Bumper to Bumper.