Good Morning,
I have a customer who seems to be having a issue....I believe the batteries that are discharged hes using are beyond saving and sulfated.
"With the Odyssey batteries, or any other new and pretty well charged battery, there is no problem. Show the charger an older battery which is discharged, and the following happens. It starts its charge in the normal way. It goes through its various stages until it gets to the point where one might expect it to go from ‘float’ to its maintenance level. At that point a clicking is heard. The clicks are about 7 or 8 seconds apart and if you observe both the voltage and the current while listening to the clicks, you would hear a click and then see an immediate decay of current and potential followed by a gradual build up of both until the next click 7 or 8 seconds later. It is as if the charger is repeatedly trying and failing to go to the maintenance mode. What is happening? Why does it do this when charging an older battery from a discharged state?"
