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Old 11-25-2012, 11:11 AM   #1
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House batteries

This is my first post and our first class A motorhome, 2007 allegro BA32 My question is about the house batteries.
1 - Are they charging when the engine is running?
2- Are they charging when the generator is running?
3 - Are they charging when they are plugged into 110 shore power?
4 - Does it matter if the 48 volt switch is in the on or off position?

Thank you
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Old 11-25-2012, 01:09 PM   #2
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Hi and welcome to the forum.

Hopefully, some of our Tiffin experts will chime in but my guess is that:

* Yes, your house batteries charge while driving via the "bird" solenoid which connects both house and chassis batteries together.

* Yes, they charge when the generator is running or when connected to shore power. Your chassis batteries may or may not charge while connected to shore power depending on whether or not your rig has some sort of trickle charger installed.

* I'm not familiar with a 48 volt switch.

Best of luck.

Rick
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Old 11-25-2012, 01:24 PM   #3
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I'm sure that your Question4 is a typo.
For 1>3 your house; coach; R/V batteries; all the same batteries just everyone knows them by a different name , should be charging from all sources. The 12v disconnect should be on to hook the batteries into the system.
Chassis( engine start ) batteries , may not charge from shore power( 110v ) depends on how your coach is wired.
Best way to find out is with a multi-meter, at the batteries with each power source. 13.2v and over, up to 14.3. the batteries are charging.
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Old 11-25-2012, 05:31 PM   #4
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ignatz,
Your house batteries will charge when the engine is running, on generator power and on shore power. The 12V switch must be on to connect the batteries to the system so they charge.

Unless Tiffin has changed their wiring between 2005 and 2007, the engine battery will only charge when the engine is running, not when the coach is on the genny or on shore power. I use a BatteryMinder to keep the engine battery charged when we stop for longer periods of time.
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Old 11-25-2012, 09:14 PM   #5
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Quote:
Originally Posted by ignatz View Post
This is my first post and our first class A motorhome, 2007 allegro BA32 My question is about the house batteries.
1 - Are they charging when the engine is running?
2- Are they charging when the generator is running?
3 - Are they charging when they are plugged into 110 shore power?
4 - Does it matter if the 48 volt switch is in the on or off position?

Thank you
yes yes yes and no such thing as 48 volt.Its all 12 volt and has no bearing on the batterys charging
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Old 11-26-2012, 05:14 AM   #6
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The answer is they 'should be', the easy way to tell is to use a VOM and check battery voltage before and during when they 'should be' charging!
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Old 11-29-2012, 09:15 PM   #7
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Tiffin changed then because my chaise batteries and house batteries charge - on shore power, generator power or engine alternator.
2007 Phaeton 40QDH.

Jroan
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