I recently installed a new
battery charger - Pronautic 1250 and went to the
Bahamas for 6 weeks. I suspected that my two 4D house bank was sulfated so I did an
equalization.
During the trip, they quickly ran down, so I charged often. The house bank also starts the stbd
engine. There is another 4D for just starting the port
engine and another 4D for the
windlass and bow thruster.
Just before leaving to come back (14 hrs running), I noticed that the port non-house bank
battery was very hot. I refilled it with distilled
water.
On the run home, I smelled gassing. On getting back to my home slip, the smell was very bad and the three 4 Ds were hot. The port one was wet.
The battery
charger was off for the 14 hr run. Why did the alternators overcharge when they never did before with the old (20 yr old) charger.
Did the new charger somehow kill the
alternator diode packs?