- Run point to point vf drop + then the same -.
- Then an accurate meter millivolts across the shunt to confirm and agree
- Starting at 12.23 volts my 31, accepts 104 amperes which a remaining profile close to your's.
An -accurate- amp hour meter can reflect charging acceptance via ampere hours total count. But the meter must be dead-on accurate. Most aren't.
A rig that has dual alternators (Ford) the 2nd being a hairpin 275 ampere would be a blessing for multiple AGM recharging. Charge with the alternator until absorbsion voltage is equal to or less than the potential of the charger or converter, then switch.
With my rig the Niehoff 400 amp alternator works at 260 amperes max charge with the 4 L-16 Rolls batteries. There is absolutely no question in my personal battery realm that the AGM batteries charge substantially faster. Enough to make a major dent is generator run time.
But that advantage disappears if a wimpy charger is used. I would like to see at least 50% of bank amp hour capacity for maximum reduction of gen run time.
One of the big boo boos, is to try and cook a dinner for 12 in a one quart sauce pan. The generator and charger has to be sized for the task.