Hi,
AGM do recharge more quickly due to lower internal resistance. Flooded at 85% state of charge only accept a 12.5 amps charging rate (per 100 amp-hours of capacity) and that gets lower as 100% is approached. This tapering of charge rates seems to happen at about 95% state of charge for AGM.
Self discharge is much lower in an AGM.
My personal opinion is that the very nature of the design makes them some what more vibration tolerant.
AGM are going to be more expensive per amp-hour than flooded golf cart batteries.
AGM may exhibit less voltage drop than golf cart.
With any battery cell count matters. More cells increases the risk of failure.
My ideal bank would be 1000 amp-hours of six 2 volt AGM. Seeing as I have a beer budget, I'm using 556 amp-hours consisting of for 12 volt telecom jars.
Telecom agm is a special subset and appear to act as if they were flooded to some extent. But it is the less desirable characteristics that are mimicked such as lower current (amperage) recharging rates. For example, the suggested maximum recharging rate for mine is limited to 27 amps each.
kerrlakeRoo wrote:
OK, not a total battery geek,,,,, yet, but have watched and listened enough to get that a multi use battery ie; deep cycle/starting marine battery is not going to do as well as a Golf Cart battery, have seen very little for some reason about 12 volt deep cycle batteries such as sweeper batteries which can be 12 volt 200+ amphr, in a single unit for under $250, vs the GC-2's
Do they both poorly handle 50% + discharge rates?
Is one any better than the other?
Do the GC batteries better handle bouncing around?
Can AGM's better handle a 75% discharge?
And how long to recharge both types?
Those of you deeply invested in the differing types seem to get so deep into the littlest differences, that stating the basics in these threads gets by-passed.
Would love to see a site or thread explain the advantages of each.
