At HOT ROD, we hear stuff. Lately we've been hearing about hot rodders' love/hate relationship with their sealed, leakproof batteries. You adore their ability to take punishment and their ...

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 ...

️ Editor's note: This article was updated with new information in December 2025. Dead batteries are a predictable reality for any car that spends more time parked than driven. Battery discharge does ...

First, let’s clear the air: Optimate is not Optima. The former is a European-engineered brand of battery chargers; the latter is a maker of those red-and-yellow AGM batteries you’ve probably seen in ...

In this months June issue, we got a chance to try out OPTIMA Chargers Digital 1200 Battery Charger. These chargers are the most current microprocessor-controlled battery charger yet, and they are a ...

“I couldn’t ask for a better product.” ...

The seasons are changing, and in the Northeast, we’re putting away classic cars, mowers, and other warm-weather powersports toys. That means a lot of batteries will be going on tenders. And what do ...