How To Know Car Battery Life. Find your cars battery. Eventually the car will not start.
A battery made in October 2021 will have a numeric code of 1021 or an alphanumeric code of K-1. No need to panic if you get the leads backwards. Find your cars battery.
If it registers less than 12 volts then it may be time for a replacement.
Allow the battery to sit idle for at least an hour before connecting. It is one of the most solid signs that will help you understand that you require a car battery replacement. The life of your car battery depends on how long it can hold its charge and is capable of being recharged. A battery made in October 2021 will have a numeric code of 1021 or an alphanumeric code of K-1.
