Quote:
Originally Posted by 80stech
... I didn't know there is different chargers for AGM though ??
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A wet-cell lead-acid car battery has six cells, each of which has a typical resting voltage of 2.1 volts. Therefore, since the cells are connected in series, the total rest voltage of a fully charged battery should be at least 12.6 to 12.8 volts.
Things are a little different with AGM (Absorbent Glass Mat) batteries. The minimum rest voltage of an AGM battery is 12.8 volts. If this voltage drops down to 12.6 volts, the battery is only 75% charged. If it drops down to 12.3 volts, the battery is only 50% charged.
When an AGM battery’s resting voltage is at or below 11.80 volts, the battery is effectively flat.
Under normal conditions most 12-volt automatic battery chargers will work on an AGM battery, but the battery will only charge to about 80 percent of its full capacity. Many newer battery chargers have settings specifically for AGM batteries.