Originally Posted by DennyW
If it stays at 14.2 all the time, it is over charging. I*f a battery has a bad cell, or 2, it will want to charge all the time. Double check the battery as far as the cells being good.
Each cell is 2.2 volts on a 12 volt battery. If 5 of those cells are 2.2, and the 6th one is less than 2.2, all the other cells will try to charge that cell to make it even. Like a bucket with holes, and you are trying to keep it full, but it doesn't fill up. :LOL:
The Battery has to be good, and fully charged to test the charging system correctly.