An AGM battery, or absorbent glass mat battery, is essentially a more advanced version of a lead-acid battery. There are differences between AGM and standard lead-acid batteries, one of which being ...

While they all share a basic common purpose, car batteries are not universal. There are many kinds of car batteries, and you'll want to make sure you have the right one for your vehicle. The most ...

The DieHard H8-AGM is part of the Car Batteries test program at Consumer Reports. In our lab tests, Car Batteries models like the H8-AGM are rated on multiple criteria, such as those listed below.