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Standard wet cell batteries have a max charging voltage of 14.5 volts. Anything over that will over charge and cook the battery. AGM batteries have a higher load capacity and recharge rate. Charging of a AGM battery can peak over 15.5 volts, and I'm sure many of you have noticed this on your vehicles. That voltage and load can charge the AGM much quicker, than if it were a standard wet cell. AGM batteries are also deep cycle batteries, wet cells are not. The OEM system has a battery monitoring system and has its own algorithm to maintain and charge the stock AGM battery. Installing a wet cell will cause it to boil and leak, thus damaging it and reducing its service life. I know the wet cells are cheaper, and they can work in a pinch, but its best to stay with the OEM style, AGM batteries.
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