Engine Battery Date Code

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majicchuck

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Aug 3, 2017
Posts
127
Location
Buffalo NY
Over the past few weeks have noticed that engine battery is not fully charging when connected to shore power. It's been sitting at 12.5V while plugged in. When connected the house battery is typically above 13.7V. House batteries have dropped as well (13.2-13.3V). House batteries are brand new and connections tight and clean. Started to think engine batteries are the issue. Looking for date code. Sticker on front shows H6. Does that really mean July 2006?
 

solarman

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Joined
Feb 8, 2018
Posts
415
Location
Texas
majicchuck said:
Over the past few weeks have noticed that engine battery is not fully charging when connected to shore power. It's been sitting at 12.5V while plugged in. When connected the house battery is typically above 13.7V. House batteries have dropped as well (13.2-13.3V). House batteries are brand new and connections tight and clean. Started to think engine batteries are the issue. Looking for date code. Sticker on front shows H6. Does that really mean July 2006?

H6 is August 2016

should be three stamps on the terminal, whats the other ?
 

John From Detroit

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Joined
Apr 12, 2005
Posts
24,786
Location
Davison Michigan
YOu can pull the battery and have it shop tested.  But you need to find the converter and measure voltage at the converter output terminals..
Report all 3 voltages to the forum
Converter out
Battery (house)
Battery (Chassis)

If you can find your isolator (Or battery control center)

This is for BCC
Report voltage on the terminals marked
Generator
Aux and:
Main
as well.. A lot of info comes from what the diferent voltages are.
 

Gary RV_Wizard

Site Team
Joined
Feb 2, 2005
Posts
73,522
Location
At our Silver Springs FL home
Since both house and chassis batteries are dropping, I doubt if the problem is the chassis battery.  I'm pretty sure your '05 Bounder has a Battery Control Center that manages things and it won't charge the chassis from shore power until the house batteries reach a required threshold. That's typically 13.3v in models of your vintage (some older ones were 13.1v).

You need to verify that the converter/charger is in fact putting out 13.6v or more (the usual  float charge voltage).  The house batteries should be up to that same voltage. It is conceivable on of the new batteries has a bad cell and dragging down the rest.
 

majicchuck

Well-known member
Joined
Aug 3, 2017
Posts
127
Location
Buffalo NY
John From Detroit said:
YOu can pull the battery and have it shop tested.  But you need to find the converter and measure voltage at the converter output terminals..
Report all 3 voltages to the forum
Converter out
Battery (house)
Battery (Chassis)

If you can find your isolator (Or battery control center)

This is for BCC
Report voltage on the terminals marked
Generator
Aux and:
Main
as well.. A lot of info comes from what the diferent voltages are.

Thanks John. I will check in the next few days.
 

majicchuck

Well-known member
Joined
Aug 3, 2017
Posts
127
Location
Buffalo NY
Gary RV_Wizard said:
Since both house and chassis batteries are dropping, I doubt if the problem is the chassis battery.  I'm pretty sure your '05 Bounder has a Battery Control Center that manages things and it won't charge the chassis from shore power until the house batteries reach a required threshold. That's typically 13.3v in models of your vintage (some older ones were 13.1v).

You need to verify that the converter/charger is in fact putting out 13.6v or more (the usual  float charge voltage).  The house batteries should be up to that same voltage. It is conceivable on of the new batteries has a bad cell and dragging down the rest.

Ok. Thanks. Getting readings now. Having some trouble getting readings from Battery Control Center. Multi-meter is not picking up voltage.
 

majicchuck

Well-known member
Joined
Aug 3, 2017
Posts
127
Location
Buffalo NY
John From Detroit said:
YOu can pull the battery and have it shop tested.  But you need to find the converter and measure voltage at the converter output terminals..
Report all 3 voltages to the forum
Converter out
Battery (house)
Battery (Chassis)

If you can find your isolator (Or battery control center)

This is for BCC
Report voltage on the terminals marked
Generator
Aux and:
Main
as well.. A lot of info comes from what the diferent voltages are.

Okay I got the voltages.
Inverter-13.7V
Chasis-13.63 and 13.63
House-a) 6.83V, b)6.83V, c)6.85V d) 6.83V

I was not able to get readings from BCC. Strange, voltmeter did not pick anything up. Readings on display inside coach is now showing 13.5 for engine and 13.5 for house.
 
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