How often should car batteries be replaced?

[MackenzieFitz]

Car batteries generally need to be replaced every 3 to 5 years. It is recommended that owners check the battery's internal resistance and voltage during each maintenance service. If both the internal resistance and voltage fail to meet the specified values, it indicates that the battery needs replacement. The battery is a crucial component of a vehicle, powering all electronic devices when the engine is not running, and it is also responsible for starting the engine. After the engine starts, it drives the alternator to operate, which then supplies power to electronic devices and recharges the battery. Car batteries, referring to storage batteries, are an indispensable part of automobiles and can be categorized into traditional lead-acid batteries and maintenance-free batteries.