This question pertains to a string charger on an e-Fun D but could apply to AGM battery theory in general.
In an attempt to keep from cooking any batteries that might have lagging neighbors, I put my string charger on a timer at work. I can check the individual battery voltages to see what the level of charge is. So I'm trying to figure out exactly how long to keep the charger turned on. Today as my bike was charging after two hours, it read 14.1 volts with a DVM. I turned off the charger and each battery read 13.7 volts. Over the course of about a minute, they all settled down to about 13.65 or so. I suspect as they sit they will settle down some more in time during the course of the day.
My understanding is that the charger will pulse 14v and then measure the actual battery voltage, then pulse, then measure, etc.
My question is, what is the voltage that I should bring them up to and is there another criteria to measure to know if they are close to fully charged?