You might have seen ads for AGM car batteries or a label with those letters on your battery. How are AGM batteries different ...

The owner says his EV6 has needed three or four new 12V batteries in a year despite only being driven 4,500 miles ...

How long a battery can power a car if the charging system fails. A higher score reduces the risk of failure if accessories are left on. A higher score means more reliable cold starts. This test ...

How long a battery can power a car if the charging system fails. A higher score reduces the risk of failure if accessories are left on. A higher score means more reliable cold starts. This test ...