Rick's Free Auto Repair Advice

Posts Tagged: AGM battery

What is an AGM battery?

What is an AGM battery If you’ve been shopping for a battery for your motorcycle, car, or lawn and garden tractor, you may have seen batteries listed as AGM (Absorbent Glass Mat) . If you’ve stopped to wonder what is an AGM battery, here’s the scoop. Traditional lead acid batteries are filled with sulfuric acid and so are AGM batteries. However, in a traditional “flooded” lead acid battery the acid sloshes around. You would think that’s the best design to keep the acid in contact with the lead plates. But … Read More

How to buy a car battery

Learn how to buy a car battery So your battery’s dead and now you’re shopping for the best battery for your car. Here’s the skinny on battery manufacturers. There are really only three U.S. manufacturers—Johnson Controls, East Penn, and Exide. All the retailers like Autozone, Advance Auto Parts, O’Reily, Sears, Walmart, Costco, and Sams get their batteries from those three manufacturers. Each retailer orders batteries custom built to their specifications and label them with different store brands, so it’s hard to compare from one store to another. Worse yet, each … Read More


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