Ventricular fibrillation is one type of arrhythmia that can be deadly. It occurs when the heart beats with rapid, erratic electrical impulses. This causes pumping chambers in your heart (the ventricles) to quiver uselessly instead of pumping blood.
A VOLTAGE REGULATOR regulates the charging voltage that the alternator produces, keeping it between 13.5 and 14.5 volts to protect the electrical components throughout the vehicle. There is also a system to warn the driver if something is not right with the charging system.
Seven posts and no one mentioned a bad voltage regulator. Everything runs off the battery. When the voltage in the battery drops below 12.v, the votage reg opens and lets current flow to the battery. When the engine is running, the alternator is always producing current.