HDJ80 with 2 batteries (yellow top). Batteries were pretty empty, around 11 volts, started anyhow. Went for a 400 kms drive; figured alternator would top batteries up. However, volts didn't come above 12,5 with incidental 11,9, charging light went out, batteries didn't drain empty.
That was new to me, would expect 14,5 volts and batteries full by the time I got home. On the other hand; power didn't go away, just stayed around 12 volts.
Came home, put car on charger and next morning I had 13,5 volts, started the car and I got 14,5!!!
Now I'm baffled. Does the alternator need more power to go up to normal volts and if low, then not?
Anybody any ideas?
That was new to me, would expect 14,5 volts and batteries full by the time I got home. On the other hand; power didn't go away, just stayed around 12 volts.
Came home, put car on charger and next morning I had 13,5 volts, started the car and I got 14,5!!!
Now I'm baffled. Does the alternator need more power to go up to normal volts and if low, then not?
Anybody any ideas?