How Car Battery Voltage Affects Overall Performance
Car batteries play a crucial role in the operation of modern vehicles, providing the electrical power necessary for everything from starting the engine to powering accessories like headlights and infotainment systems. One often overlooked yet essential factor in battery health is its voltage. Understanding how car battery voltage affects overall performance can help you maintain your vehicle and avoid unexpected breakdowns. What Is Car Battery Voltage? Battery voltage refers to the electrical potential difference between the positive and negative terminals of the battery. In most vehicles, a fully charged 12-volt battery actually operates at around 12.6 to 12.8 volts when the engine is off. When the engine is running, the alternator typically boosts the voltage to between 13.7 and 14.7 volts to keep the new car battery charged and power the vehicle’s electrical systems. Impact of Voltage on Vehicle Performance 1. Starting the Engine The engine's starter motor relies on a surge ...