No Maintenance Coach Barttery
My coach battery is on a pull out slide that is almost impossible to pull out far enough to check or add water to the back cells. It's 6-yrs old, doesn't hold a charge, and I want to have it replaced ...
Forum Discussion
The recommended charging voltage is different for AGM's but only by a tiny amount.. Few converters are that well regulated and in fact how hot it is makes a difference as well and few are compensated for temp.. So the difference is too small to matter.
The big difference is something called Acceptance.. Some AGM's can accept a re-charge (Bulk mode) that is very, very, very fast, as much as 10x what a Flooded wet can take... (Specifically Lifelines are like this). Others the recommended max is about the same as Flooded so again, for the most part no differnece.
OPTIMA (A special case of AGM) has less capacity per cubic foot Recommend against unless you are in "Rough Service" (IE: Wave Runner, 4-Runner)
I have found AGM's do not, as is often preached, last longer... In fact I do not see how a "Sealed" type (Valve Regulated) can outlast a properly maintained flooded wet.. But they are nice if you have access issues.
The big difference is something called Acceptance.. Some AGM's can accept a re-charge (Bulk mode) that is very, very, very fast, as much as 10x what a Flooded wet can take... (Specifically Lifelines are like this). Others the recommended max is about the same as Flooded so again, for the most part no differnece.
OPTIMA (A special case of AGM) has less capacity per cubic foot Recommend against unless you are in "Rough Service" (IE: Wave Runner, 4-Runner)
I have found AGM's do not, as is often preached, last longer... In fact I do not see how a "Sealed" type (Valve Regulated) can outlast a properly maintained flooded wet.. But they are nice if you have access issues.
