There's a mysterious set of codes on the battery in your car -- and the one you may want to buy to replace it. Here's how to crack the code.

To understand why batteries come in many different sizes and shapes – and serve many purposes – look to the past, at how batteries originated and how they have developed over the years.

Consumer Reports' tests reveal the best car batteries for the money in group sizes 24/24F, 35, 47, 48, 49, 51R, and 65.

There are seven sizes of car batteries, and in each size there's a best one, according to Consumer Reports' testing. Here are the tops in each category.

Consumer Reports' tests show the best car batteries when it comes to overall performance.

You may have been given advice that leaving a car battery on a concrete floor would cause it to discharge, but is that still the case? Let's take a look.

Every battery needs a 12-volt car battery, even that newfangled electric car you're driving around. 12-volt car batteries continue to be the biggest part of the $100-billion auto battery market ...

To understand why batteries come in many different sizes and shapes – and serve many purposes – look to the past, at how batteries originated and how they have developed over the years.

To understand why batteries come in many different sizes and shapes – and serve many purposes – look to the past, at how batteries originated and how they have developed over the years.