I have a 2009 Chevy 2500HD 6.0 Engine 160 Amp alt. It does not have a Hall effect current sensor.
If it is about 20 deg. F. it charges at about 14.8 V when you start it and goes down to about 13.8 vouts in about 10 minutes.
If it is about 15 deg. or colder it seens to charge at 15.3 volts forever.
When it is cold I have seen it charge at 4 amps and 15.3 volts.
I have 2 Optima yellow top AGM batteries in it.
OPtima says you will cut down the life of the battery if you charge at over 15 volts.
I would like a documents on how the charging system should work.
I think it must be secencing current somehow to bring the volts down as the battery charges.
have the same problem?
Wednesday, February 2nd, 2011 AT 4:59 PM