Hi hammick,
15.5 may exceed the gassing voltage, depending on the ambient temperature. All that it is going to do is cause electrolysis of the electrolyte causing the liquid to bubble away like mad.
Rule of thumb is approximately one bubble per second--more than that is simply causing heating and excessive gassing.
hammick wrote:
pianotuna wrote:
Hi,
My guess is that running in AGM mode will do exactly nothing to speed charging--and in fact it may be the exact opposite.
How much solar do you have?
hammick wrote:
But I have some hope that running the AGM plus mode after a normal mode might hold it at higher volts long enough.
My thought on AGM plus 15.5v mode wasn't to speed charging. It was to get them fully charged after running the regular charge cycle. It looks like getting them fully charged every day is not what most people do because of long generator run time to accomplish this.
Not sure what I'll try at this point. I do have the built in Onan 4000w genset but I hate running it just for charging. It's loud and thirsty. But if a 75a charger is what I get I'll use the Onan rather than buying another Yamaha. Right now the Onan is reserved for Microwave use and the rare occasion that we need the AC. If I had to do it over I would skip the built in genset. Just too loud to use on a regular basis.