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Old 03-31-2011, 03:20 PM   #11
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Join Date: Mar 2011
Posts: 10
Gentlemen, I would like to thank you all for your help, after talking with so many people and loseing sleep over this problem I took three steps back and thought about what jimh said, I really didn't have this problem till I changed the batteries. Turns out after charging them twice they read 12.7 volts but when under a load they died found this out when I tried to put the slides out. They're Energizers from Sams club I put the same brand in my 5500 gmc & they work great, I guess you can always get some bad ones. Once again thank you all.

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Old 04-07-2011, 10:10 AM   #12
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Join Date: Apr 2011
Posts: 3
not charging

Hi Guys

I seem to be having the same issue on my 2006 Georgetown. I just spend big buck on a new Intellapower but did not solve the issue. Now I am trying to diagnose the SDC-107A. I currently have no power at F-1 ~ F-5.
Any advice would be great.

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Old 04-07-2011, 10:17 AM   #13
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Join Date: Apr 2011
Posts: 3
After further review I see that those come from the Chassis system and I am not having problems there.
What is also does that it didn't before, it will not run the 12v lights with the battery disconnect off.
I don't think the voltage from the converter is reaching the batteries and I cannot find a fusable link anywhere
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Old 04-07-2011, 12:37 PM   #14
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Join Date: Apr 2011
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One last update that might make since to someone. For some reason while I was checking voltage with battery's off and battery's one all of a sudden something in the battery disconnect reset. Everything is working fine now.
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Old 04-11-2011, 12:14 AM   #15
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Join Date: Dec 2010
Posts: 1

Originally Posted by mbtelguy View Post
Hi ! I'm sorry but I forgot I had this attached schematic, which may help you
localize the problem. If you have already determined where the trouble is
ingnore the following suggestions.
I have a slightly different problem... but this diagram was exactly what I needed. Thank you!!!!

I am replacing my two dead 12 volt "car" batteries that supplied the coach, with two true deep cycle 6 volt batteries. Having a background in electronics, I figured simple DC setup, and I pulled all the cables off(some where in bad shape). Funny thing is... I have one more red cable then should be there!?!?!?! Worse part is, I didn't draw or take a picture before disconnecting everything!

All I can figure... there was a doubled up connection from Lug 3 to the Coach batteries. Will try tomorrow night and see if everything still works.
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Old 04-12-2011, 08:10 PM   #16
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Join Date: Aug 2010
Location: Langley BC
Posts: 123
It is very difficult for forum members to guess what might be the problem but from what I read it sounds as though there is either a charging problem or a short that is draining the batteries. There should be two cables in the battery storage bay, one connecting to the chassis ground, normally black, and one cable connecting to the battery control center, normally red. First I would disconnect both these cables from the battery bank. Next I would take a separate automotive battery charger, a "smart" charger is best, then connect the charger to the battery bank. Charge the batteries until your smart charger indicates the batteries are 100% full. This should take many hours especially if they are "dead". Now leave the batteries disconnected from the coach and from the charger for a day. With a digital multimeter check to see if the voltage is still 12.6 DC Volts. If so then the batteries are probably okay and the problem is some load draining them when they are hooked to the coach. I don,t want to sound condescending but the two 6 volt batteries should be hooked as follows. With adequate cable connect the positive(+) post of one 6 volt battery to the negative (-) post of the other 6 volt battery. By hooking these two batteries in series you now realistically have one large 12 volt battery. This leaves one pos (+) post that will be available to be connected to the BCC after you have finished the testing process and the remaining unused neg(-) post that will ultimately be connected to the chassis ground. Once you are satisfied that the problem is not the batteries themselves you can reconnect them to the coach and regularily check the voltage readings with your multimeter. It should take several days not minutes to drain a 220 Amp Hour battery bank with the normal parasitic loads. If it only takes a few hours to drain the batteries it is likely there is a huge phantom load draining the battery bank
By now you will have determined whether the problem is one of inadequate charging capability or, batteries that are disfunctional and need replacing or whether there is a short somewhere draining the batteries.
Under normal circumstances you should not get readings of less than 10.5 VDC on 12 volt batteries. a reading of 10.5VDC usullay indicates the batteries are completely discharged.
There are lots of good ideas put forward by the other posters as well. I would not rush out to buy a new BCC before I had determined that these other possible issues were not to blame.
Just my opinion.
There is some great information on the "net" regardiing RV electrical systems. Google Phred's Poop Sheets and you will find much valuable information for tracking down your problem.

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