mesquito_creek
New Member
- Joined
- Feb 8, 2021
- Messages
- 146
I have a 3 battery lead acid battery bank. 1 battery is starting the starboard motor. The other 2 batteries in parallel are the house and starting for the port engine. 5.7 liter Merc fuel injected I/Os. I would like to replace the 2 house batteries with ampere time 12v 100Ah batteries. I would leave the single starting battery as is lead acid. Obviously the house batteries are where I need the extra capacity.
I was hoping to leave the existing Charles Industries C-Charger 5000 20 amp in place for the AC converter. The manual states:
When properly installed and connected, the C-Charger will automatically charge and maintain the batteries. When power is applied, the C-Charger will enter a bulk or “constant current” mode, during which a higher rate of charge is achieved to fully replenish the batteries. When the batteries near a full charge, the output current will decrease and the charger will enter a timed absorption mode. After four hours in absorption mode, the output will drop to a float rate to maintain the batteries at a temperature compensated finishing voltage approx 13.6 volts.
The 13.6 volts seems like its on the edge, but its also simple enough to just turn it off and not float for long periods. But it can't be that critical for me to monitor, so if I am running the generator/AC over night and it reaches a full charge and goes into float until the morning.
Most importantly over several days when using the boat and the generator is running I would charge the house LifePO4. In storage I would use a morningstar PWM sunsaver 20 amp charge controller set to AGM with a 120v panel.
I was hoping to leave the existing Charles Industries C-Charger 5000 20 amp in place for the AC converter. The manual states:
When properly installed and connected, the C-Charger will automatically charge and maintain the batteries. When power is applied, the C-Charger will enter a bulk or “constant current” mode, during which a higher rate of charge is achieved to fully replenish the batteries. When the batteries near a full charge, the output current will decrease and the charger will enter a timed absorption mode. After four hours in absorption mode, the output will drop to a float rate to maintain the batteries at a temperature compensated finishing voltage approx 13.6 volts.
The 13.6 volts seems like its on the edge, but its also simple enough to just turn it off and not float for long periods. But it can't be that critical for me to monitor, so if I am running the generator/AC over night and it reaches a full charge and goes into float until the morning.
Most importantly over several days when using the boat and the generator is running I would charge the house LifePO4. In storage I would use a morningstar PWM sunsaver 20 amp charge controller set to AGM with a 120v panel.