AGM vs Flooded Bulk Times
PT keeps asking whether AGMs will spend more time in Bulk at the same charging rate. I found a good example where that can be measured, using ah64id's test with his PD4655 on his pair of Lifeline...
Forum Discussion
MrWizard wrote:
I think the point that was being made is that the resistance of a wet cell at say 13.6 is greater than the resistance of an AGM at 13.6
Given a supply capable of 14.? Voltage at 50?(but in your number) amps
The AGM will accept more amps than the wet
The tests being run with out an amp hour counter or kwhr counter and or actual SG SOC check are void, they don't prove that wet and AGM charge the same
Industry valid tests measuring all variables prove AGM accept more amps at any given voltage can accept a higher voltage, and recover to full charge state in less time,
For an RV user this means going to 90 percent charge faster
Do the top charge with solar or at home plugged in
Well stated Mr. Wizard!
No matter what tests may seem to show to the contrary ... an AGM lead acid battery that needs some charging MUST accept more current at any applied voltage high enough to drive current into it than a liquid lead acid battery will at the same applied voltage ... due to it's lower intrinsic resistance. This is just plain the way electricity works, and applies regardless of what "stage" the battery is in during it's recharge cycle.
To me, that alone is reason enough to prefer dry (AGM) batteries over wet batteries in any RV that wants to be self-contained enough for multi-day dry camping. One just has to figure out how to pay for the AGM batteries. ;)
