Rick's Free Auto Repair Advice

Posts Tagged: optima battery

Optima battery

Should you buy an Optima battery? An Optima battery is often referred to as a gel cell battery. That’s not true. An Optima battery is actually an absorbed glass matt (AGM) style battery. For the full definition of an AGM battery, see this post. An AGM battery has positive and negative plates like a starting, lighting, ignition (SLI) battery, but uses an absorbent glass matt between the plates to absorb and hold the electrolyte. In other words, the battery acid doesn’t slosh around in an AGM battery as it does … Read More


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