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 ...

The definition of a car battery has taken on new meaning thanks to the onset of electric vehicles, but in traditional internal combustion vehicles, you’ll still find a good ol’ 12-volt brick sitting ...

An AGM battery should not affect radio operation, so check connections and perform a hard reset. A "miracle" car spray promising six months without washing is unlikely to work on heavy dirt. A faulty ...

Unlock to see our ratings and compare products side by side Life test measures how a battery endures repeated charge-and-discharge cycles at hot-climate engine-compartment temperatures. The more ...

In our lab tests, Car Batteries models like the Platinum AGM 94R H7-AGM are rated on multiple criteria, such as those listed below. Life: How well a battery withstands repeated charge-discharge cycles ...

Click. That's one of the worst sounds you can hear after turning an ignition key. It's worse yet when that telltale click—the sign of a dead or discharged battery—could have been prevented by a better ...