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Old 10-30-2012, 03:29 AM   #1
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Battery over charging at night

2011 Georgetown: Just replaced the two house batterys because they kept boiling over and setting off the alarm at night time when most of the 12 volt systems were not in use. They were about two years old. Have replace one inverter as well. The new batterys have been in use for 5 days , now the alarm has started go off around 1am. I assume these batterys are over charging. I started disconnecting the house batterys with the disconnect switch at night and connecting back up in the morning. Everthing seems to to be fine as long as a lot of 12 volt systems are in use. Is there a voltage charging regulator in the system that is suppose to keep the house batterys from over charging? Any suggustion would be appreciated...Larry
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Old 10-30-2012, 07:18 AM   #2
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Quote:
Originally Posted by Larry Carswell
2011 Georgetown: Just replaced the two house batterys because they kept boiling over and setting off the alarm at night time when most of the 12 volt systems were not in use. They were about two years old. Have replace one inverter as well. The new batterys have been in use for 5 days , now the alarm has started go off around 1am. I assume these batterys are over charging. I started disconnecting the house batterys with the disconnect switch at night and connecting back up in the morning. Everthing seems to to be fine as long as a lot of 12 volt systems are in use. Is there a voltage charging regulator in the system that is suppose to keep the house batterys from over charging? Any suggustion would be appreciated...Larry
Need to trouble shoot your converter.
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Old 10-30-2012, 08:03 AM   #3
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Yes, sounds likely your converter is locked in "bulk" charging and is not switching to "FLOAT" as the battery gets topped off. It most likely needs replacing.

See the stages in the attached WFCO converter manual.
Attached Files
File Type: pdf Manual - Power Distribution Center WF-8900 English.pdf (1.89 MB, 21 views)
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Old 10-30-2012, 08:37 AM   #4
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Originally Posted by herk7769
Yes, sounds likely your converter is locked in "bulk" charging and is not switching to "FLOAT" as the battery gets topped off. It most likely needs replacing.

See the stages in the attached WFCO converter manual.
To further herks post what is make and model of converter?
With that we can help you get the correct trouble shooting flow chart.

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Old 11-01-2012, 01:32 PM   #5
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It is a WFCO 65 amp, Model WF9865.
When I installed it I didn't see any switches, so I assumed all function were automatic...Larry
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Old 11-01-2012, 04:14 PM   #6
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Originally Posted by Flicker View Post
It is a WFCO 65 amp, Model WF9865.
When I installed it I didn't see any switches, so I assumed all function were automatic...Larry
They are. It is switched internally by voltage sensing circuits.
As the voltage of the battery increases, the stages are switched to avoid overcharging.
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