hickleyboy
Member
Need thoughts/advice please
- Boat is parked at a friend's dock while my dock slip is getting serviced. Went for a cruise on a Saturday, docked the boat, shut down all AC systems and just left minimum systems on like bilge etc. A partner was supposed to check on the boat after 48 hours and run genset in order to keep all batteries charged etc. That didn't happen.... Boat sat for 6 nights, not plugged into power. The draw on the battery system was more than expected, apparently.
So we get to the boat after 6 nights. Partner started the boat but not sure what other systems he tried to power up. Engines are on a separate starter battery system and isolated from all other electronics. Apparently no other devices come on line. I get to the boat, I see electrical panel is registering 15.5V There is a 24V house and a 12V house joined by a Vanner equalization system. I go to inverter display to see if current coming from alternators into the inverter/charger to give the house bank some juice. Nothing feeding inverter/charger on the display. I try Genset (separate battery) - starts up and typically it would start feeding AC current into inverter/charger and then charge battery bank. Again nothing.
Then the inverter display goes blank and the last of any battery power dies, still no electronics etc. no charge going to house system.
I check battery banks with voltmeter - 24V system reads 15.5v and 12v system reads 6.5. I am in disbelief how that can be.
All are lifeline AGM batteries - 3 years old. 12V is 440 ah. I've plugged in an outside charger to try and bring the voltage in the battery banks up. Its been 48 hours and not making any progress on getting volts into the battery bank. It is a 25 amp charger, but the run of extension cords are about 150 feet.
Any other thoughts or should I just replace all house batteries? Maybe let it charge for a few more days so the housebank can get enough volts so the alternator or generator will notice they exist?
Other ideas how to get some juice in the battery banks?
thanks!!
PM
- Boat is parked at a friend's dock while my dock slip is getting serviced. Went for a cruise on a Saturday, docked the boat, shut down all AC systems and just left minimum systems on like bilge etc. A partner was supposed to check on the boat after 48 hours and run genset in order to keep all batteries charged etc. That didn't happen.... Boat sat for 6 nights, not plugged into power. The draw on the battery system was more than expected, apparently.
So we get to the boat after 6 nights. Partner started the boat but not sure what other systems he tried to power up. Engines are on a separate starter battery system and isolated from all other electronics. Apparently no other devices come on line. I get to the boat, I see electrical panel is registering 15.5V There is a 24V house and a 12V house joined by a Vanner equalization system. I go to inverter display to see if current coming from alternators into the inverter/charger to give the house bank some juice. Nothing feeding inverter/charger on the display. I try Genset (separate battery) - starts up and typically it would start feeding AC current into inverter/charger and then charge battery bank. Again nothing.
Then the inverter display goes blank and the last of any battery power dies, still no electronics etc. no charge going to house system.
I check battery banks with voltmeter - 24V system reads 15.5v and 12v system reads 6.5. I am in disbelief how that can be.
All are lifeline AGM batteries - 3 years old. 12V is 440 ah. I've plugged in an outside charger to try and bring the voltage in the battery banks up. Its been 48 hours and not making any progress on getting volts into the battery bank. It is a 25 amp charger, but the run of extension cords are about 150 feet.
Any other thoughts or should I just replace all house batteries? Maybe let it charge for a few more days so the housebank can get enough volts so the alternator or generator will notice they exist?
Other ideas how to get some juice in the battery banks?
thanks!!
PM