Quote:
Originally Posted by Hikerdogs
If you compare the group 29 and 31 wet cells to the AGM's I think you'll find they're more powerful and will last a minimum of 5 or 6 years. The group 29's in our 2001 Adventurer lasted 8 years, and that was with the original single stage charger.
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Talk about failing to understand what you are typing about
Group be it 24, 27, 29 or 31 refers to the size and shape of a battery.
AGM refers to the internal construction of the battery (Absorption Glass Mat) a starved electrolyte type of battery capable of being mounted without regard to This Side Up.
OPTIMA is a special case of AGM where the plates are arranged in a sprial giving far more physical strength (No electrical benefit).
AGM batteries can be purchased in many sizes, INCLUDING Group 24, 27, 29 and 31.
So your post makes no sense in this regard.
GC-2's (interstate) Flooded wet cell, with a good (Best made) 3-stage converter (Progressive Dynamics wizard controlled) lasted me nine years AGM (I do agree with you in part) only lasted about 5 of those 9 years.. Maintence free (Sealed, Valve controlled, Lead acid batteries, by the way AGM's are a sub class in this category) lasted about the same as the Interstates, though true age can not be determined since I do not recall when I bought them.