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Auxilliary Battery Switch - Printable Version

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Auxilliary Battery Switch - Randy Merrill - 04-11-2009 00:02

Hi Everyone,

On my 2003 LX I have found if I leave the auxilliary battery switch in the off
position when the coach is parked the engine batteries lose charge or go dead.
Does anyone leave their auxilliary battery switch in the on position at all
times when parked? Is there any harm in doing it? Is there any chance of
overcharging the batteries? I travel alot and am not home everyday to check on
the coach so don't want to leave the switch on if it may harm the batteries. The
manual gives no indication whether to leave the switch on or off. I just
wondered what everyone else was doing.

Thanks,

Randy Merrill
2003 LX
Ocala, FL


Auxilliary Battery Switch - timvasqz - 04-11-2009 02:06

I've never turned them off in the last five years and always park with the
chargers running. It sounds like the aux batteries power a relay that gateway
power from the chargers to the engine batteries???.

in the 94pt to charge the engine batteries while parked, you are requires to
combine the two banks at the dash and glow a dash led. the banks have gateways
mostly for consumption so you wont suck the juice off the engine batteries while
dry caamping off inverter. when the 94pt detroit is running the two banks
automaticaly combine and receive a charge off of the alts.

Greg 94pt


--- In WanderlodgeForum@yahoogroups.com, "Randy Merrill"
wrote:
>
> Hi Everyone,
>
> On my 2003 LX I have found if I leave the auxilliary battery switch in the off
position when the coach is parked the engine batteries lose charge or go dead.
Does anyone leave their auxilliary battery switch in the on position at all
times when parked? Is there any harm in doing it? Is there any chance of
overcharging the batteries? I travel alot and am not home everyday to check on
the coach so don't want to leave the switch on if it may harm the batteries. The
manual gives no indication whether to leave the switch on or off. I just
wondered what everyone else was doing.
>
> Thanks,
>
> Randy Merrill
> 2003 LX
> Ocala, FL
>


Auxilliary Battery Switch - luckyron1 - 04-11-2009 02:43

Randy, I think that is the way the system is designed. 'On' to charge both
banks, 'Off' to charge only the house batteries. A caution though, and I don't
know if this is just unique to our coach; there is a diode on the battery
isolator that controls the current between the 2 banks of batteries. We had 3
of them fail after prolonged periods in the 'On' position. Finally, we got
tired of replacing the diodes, and one time even the isolator, but it didn't
help. Now, we leave the switch in the off position and use a portable charger
and trickle charge the engine batteries while parked. In retrospect, and I'm no
electrician, it might be that the diodes that they were putting weren't strong
enough to handle it. Someone once told me that an 85 amp diode would probably
handle it.

Ron & Ruth in 2000 lxi in Branson

W> Hi Everyone,
>
> On my 2003 LX I have found if I leave the auxilliary battery switch in the off
position when the coach is parked the engine batteries lose charge or go dead.
Does anyone leave their auxilliary battery switch in the on position at all
times when parked? Is there any harm in doing it? Is there any chance of
overcharging the batteries? I travel alot and am not home everyday to check on
the coach so don't want to leave the switch on if it may harm the batteries. The
manual gives no indication whether to leave the switch on or off. I just
wondered what everyone else was doing.
>
> Thanks,
>
> Randy Merrill
> 2003 LX
> Ocala, FL
>


Auxilliary Battery Switch - Pete Masterson - 04-11-2009 14:46

I leave the switch "on" while the coach is parked. The engine batteries are kept charged. If I turn it off, the engine batteries eventually run down.
I think this is how it's designed to work.
Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
El Sobrante CA
"aeonix1@mac.com"

On Apr 11, 2009, at 7:43 AM, luckyron1 wrote:

Randy, I think that is the way the system is designed. 'On' to charge both banks, 'Off' to charge only the house batteries. A caution though, and I don't know if this is just unique to our coach; there is a diode on the battery isolator that controls the current between the 2 banks of batteries. We had 3 of them fail after prolonged periods in the 'On' position. Finally, we got tired of replacing the diodes, and one time even the isolator, but it didn't help. Now, we leave the switch in the off position and use a portable charger and trickle charge the engine batteries while parked. In retrospect, and I'm no electrician, it might be that the diodes that they were putting weren't strong enough to handle it. Someone once told me that an 85 amp diode would probably handle it.

Ron & Ruth in 2000 lxi in Branson

W> Hi Everyone,
On my 2003 LX I have found if I leave the auxilliary battery switch in the off position when the coach is parked the engine batteries lose charge or go dead. Does anyone leave their auxilliary battery switch in the on position at all times when parked? Is there any harm in doing it? Is there any chance of overcharging the batteries? I travel alot and am not home everyday to check on the coach so don't want to leave the switch on if it may harm the batteries. The manual gives no indication whether to leave the switch on or off. I just wondered what everyone else was doing.
Thanks,
Randy Merrill
2003 LX
Ocala, FL



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Auxilliary Battery Switch - Jack and Liz Pearce - 04-12-2009 01:08

Howdy, Randy.
----------------------------------------------------------------------------------------------------------------------------
--- In WanderlodgeForum@yahoogroups.com, "Randy Merrill" wrote:
>
> Hi Everyone,
>
> On my 2003 LX I have found if I leave the auxilliary battery switch in the off position when the coach is parked the engine batteries lose charge or go dead. Does anyone leave their auxilliary battery switch in the on position at all times when parked? Is there any harm in doing it? Is there any chance of overcharging the batteries? I travel alot and am not home everyday to check on the coach so don't want to leave the switch on if it may harm the batteries. The manual gives no indication whether to leave the switch on or off. I just wondered what everyone else was doing.
>
> Thanks,
>
> Randy Merrill
> 2003 LX
> Ocala, FL
--------------------------------------------------------------------------------------------------------------------------

We leave the switch in the "ON" position when parked. Our Xantrex takes care of charging the batteries.

Regards,
Jack and Liz Pearce
1993 WLWB
D'Hanis, TX



Auxilliary Battery Switch - randymerri@... - 04-12-2009 23:39

Thanks to everyone who replied regarding leaving the auxiliary battery switch in the on position. I will leave it in the on position while parked and hope it keeps the engine batteries charged.



Randy Merrill

2003 LX

Ocala, FL


Auxilliary Battery Switch - Al Scudder - 04-13-2009 04:38

I can tell you I went thru a lot of grief until I got this down correctly in my BB. This is how mine works in any case



The aux switch needs to be ON if you want to charge the batteres house and chassis. I must also turn the DC Main switch on at the door. There will be no charging of anything other than my blood pressure if I do not do this.



If you leave the coach sitting and not plugged in for any length of time you should switch off the DC switch at the door and the AUX or the batteries will go do quickly. I have left the coach in this set up for four weeks with no ill effect.



Been there done that, but then again I havetalked to people that do not have the same wiring that I have.

Scooter 2000LX Ocqueoc, MI





To: WanderlodgeForum@yahoogroups.com
From: aeonix1@...
Date: Sat, 11 Apr 2009 19:46:09 -0700
Subject: Re: [WanderlodgeForum] Re: Auxilliary Battery Switch




I leave the switch "on" while the coach is parked. The engine batteries are kept charged. If I turn it off, the engine batteries eventually run down.
I think this is how it's designed to work.



Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
El Sobrante CA
"aeonix1@mac.com"


On Apr 11, 2009, at 7:43 AM, luckyron1 wrote:


Randy, I think that is the way the system is designed. 'On' to charge both banks, 'Off' to charge only the house batteries. A caution though, and I don't know if this is just unique to our coach; there is a diode on the battery isolator that controls the current between the 2 banks of batteries. We had 3 of them fail after prolonged periods in the 'On' position. Finally, we got tired of replacing the diodes, and one time even the isolator, but it didn't help. Now, we leave the switch in the off position and use a portable charger and trickle charge the engine batteries while parked. In retrospect, and I'm no electrician, it might be that the diodes that they were putting weren't strong enough to handle it. Someone once told me that an 85 amp diode would probably handle it.

Ron & Ruth in 2000 lxi in Branson

W> Hi Everyone,

On my 2003 LX I have found if I leave the auxilliary battery switch in the off position when the coach is parked the engine batteries lose charge or go dead. Does anyone leave their auxilliary battery switch in the on position at all times when parked? Is there any harm in doing it? Is there any chance of overcharging the batteries? I travel alot and am not home everyday to check on the coach so don't want to leave the switch on if it may harm the batteries. The manual gives no indication whether to leave the switch on or off. I just wondered what everyone else was doing.
Thanks,
Randy Merrill
2003 LX
Ocala, FL



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