A car battery is a lead-acid battery that provides the electricity needed to start an engine. It also powers the lights, radio, and other accessories when the engine is off. A typical car battery has six cells that produce 2.1 volts per cell. The chemical reaction inside the battery produces electrons, which flow through the circuit to power your vehicle.
The average price for a new car battery is about $100-$200. However, prices can vary greatly depending on the make and model of your vehicle as well as the quality of the battery. Some premium batteries can even cost over $400. Additionally, installation fees may apply so be sure to ask your mechanic about those before getting a new battery installed.