Originally Posted by moondog2000
I also have a question that maybe you could answer. In the charge mode absorption it goes to 13.6 volts but does not say how many amps are produced . In the bulk mode It goes to 14.4 volts for 4 hours but nothing about how many amps are produced. My converter is rated at 55 amps but I don't think that will all go to the battery. My manual only speaks of voltage and nothing of amperage. It would be nice to know so maybe I can decrease the run time on my generator. Thank You Mike
The converter will only provide charge current based on the stage and voltage of the battery.
Storage Battery plates are thick and the charger has to provide the electrons to that battery at the rate it can take and no more or the excess will create heat and boil the battery.
Think of the plates like a sponge full of empty holes that electrons fit in.
With a near dead battery there are LOTS of holes and incoming electrons have an easy time of finding a home. They are pretty dumb and don't care that there are more holes inside the lead and they are very happy to stay on the surface.
The battery can take a lot of current quickly in this stage of charge. In fact the voltage will jump right up and it will look like the battery is fully charged when it is not. Lights will be bright etc. However, this is only a "surface" charge and there will be no capacity.
To get those stupid electrons to leave their happy home and move further in, the charger shifts to a different stage and tries to "PUSH" those electrons deeper into the lead. The converter needs to REDUCE the charge rate so that the electrons have time to find a new home and free up surface holes for new electrons coming in. There are many holes "inside" so the current can still be lower than at first but still at a good clip.
As the holes inside begin to fill up, the incoming electrons need to slow down even more to allow time for the surface holes to become available. It takes a LONG time in this stage to pack all those holes with electrons.
Here is a graph that shows the relationship between battery voltage and capacity.