17th October 2019


What does STD AGM and gel mean on a battery charger?

The short answer is that AGM stands for "Absorbed Glass Mat," which is a specific type of lead-acid battery. As a result, chargers that correctly charge gel batteries may not fully-charge non-gel batteries (including AGM batteries) and could damage them over time.

Moreover, is an AGM battery a calcium battery?

Maintenance free batteries are sealed for life and the water level does not need to be maintained, they are usually calcium batteries. They also have a built in hydrometer giving some indication of the charge in one cell. AGM and Gel batteries are both types of Valve Regulated Lead Acid (VRLA).

Is an AGM battery a lead acid battery?

Wet cell (flooded), gel cell, and absorbed glass mat (AGM) are various versions of the lead acid battery. The wet cell comes in two styles; serviceable and maintenance free. Both are filled with electrolyte and are basically the same.
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