The original installation of the wiring from the Bow Thruster battery charger to the battery wiring had a poorly done crimp/disconnect causing that connection to get hot and eventually fail preventing the batteries from being charged.
I hardly ever use the bow thruster but I test it every month. It didn't work at all when I tested it last week; the main power solenoid wouldn't even operate.
So the batteries (2 in series, 24 volt) discharged to 11.5 volts (about 6 volts each) - dead.
Ok, so I fixed the charger wiring issue and reconnected the charger, a Sterling 24 volt 20 amp unit, and nothing. Let it charge over-night and the next morning - nothing.
As it ends up all modern battery chargers will not turn on unless they can sense an appropriate resistance which indicates the battery has a base charge above a certain level. It prevents the charger from being damaged due to an open circuit.
So, if you end up in a situation like this - connect the dead battery to a good battery and allow it to absorb the minimum charge to around 10 volts then connect to the charger and start the charging.
BTW - I have a perfectly good Sterling 24 volt charger if anyone needs one....
Tom
I hardly ever use the bow thruster but I test it every month. It didn't work at all when I tested it last week; the main power solenoid wouldn't even operate.
So the batteries (2 in series, 24 volt) discharged to 11.5 volts (about 6 volts each) - dead.
Ok, so I fixed the charger wiring issue and reconnected the charger, a Sterling 24 volt 20 amp unit, and nothing. Let it charge over-night and the next morning - nothing.
As it ends up all modern battery chargers will not turn on unless they can sense an appropriate resistance which indicates the battery has a base charge above a certain level. It prevents the charger from being damaged due to an open circuit.
So, if you end up in a situation like this - connect the dead battery to a good battery and allow it to absorb the minimum charge to around 10 volts then connect to the charger and start the charging.
BTW - I have a perfectly good Sterling 24 volt charger if anyone needs one....
Tom