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Old 01-07-2007, 04:18 AM   #1
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Ecker's Avatar
 
Join Date: Feb 2004
Location: South Carolina
Posts: 770
I'm usually on top of motor home electrical,etc but since buying
this rig in April 06 I've not had a chance to really get to know it.
So, I put it away in mid-November with some trepidation as to whether
I had the loads off the batteries i.e I did have STORE on and the LPG
detector Off but not sure what else might have needed done. Its
stored 240 miles from me so I can't just drive over and check. I did
make it to unit yesterday as a quick stop on a business trip I was on
and after two months found that the batteries were in good enough
shape to start the engine and generator. (In addition, I left it with
air bags inflated and no loss of air was noted.) I noted that the
battery condition display on the RC7/GS showed they were about 1/3
depleted. The meter showed the generator was supplying about 8 amps
of power to the inverter as nothing else was on. I ran gen set for
about two hours and the meter had climbed to 71%. The meter showed
the inverter was in bulk charging mode. I decided to run the ac units
to lubricate them as well as exercise the generator at a higher
level. Initially I lowered temperature to make ac in front come on
but couldn't get rear to go since it was just too cool; the meter
showed about 20 amps being drawn. I decided to change course and run
as heat pump. When the front heat pump came on and loaded generator
to 22 amps, the battery condition suddenly jumped to full i.e. the
yellow light on RC7 panel said battery full, the visual display said
batteries 100%, the condition meter said inverter charger was now in
float. I had to leave it that way since there was nothing I could do
that would cause the inverter to change from float, etc. I didn't
have my electrical box with me so I couldn't check that way. I'm not
comfortable the batteries are fully charged and was wondering if any
one has experienced something similar or has any ideas.
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Old 01-07-2007, 04:18 AM   #2
Senior Member
 
Ecker's Avatar
 
Join Date: Feb 2004
Location: South Carolina
Posts: 770
I'm usually on top of motor home electrical,etc but since buying
this rig in April 06 I've not had a chance to really get to know it.
So, I put it away in mid-November with some trepidation as to whether
I had the loads off the batteries i.e I did have STORE on and the LPG
detector Off but not sure what else might have needed done. Its
stored 240 miles from me so I can't just drive over and check. I did
make it to unit yesterday as a quick stop on a business trip I was on
and after two months found that the batteries were in good enough
shape to start the engine and generator. (In addition, I left it with
air bags inflated and no loss of air was noted.) I noted that the
battery condition display on the RC7/GS showed they were about 1/3
depleted. The meter showed the generator was supplying about 8 amps
of power to the inverter as nothing else was on. I ran gen set for
about two hours and the meter had climbed to 71%. The meter showed
the inverter was in bulk charging mode. I decided to run the ac units
to lubricate them as well as exercise the generator at a higher
level. Initially I lowered temperature to make ac in front come on
but couldn't get rear to go since it was just too cool; the meter
showed about 20 amps being drawn. I decided to change course and run
as heat pump. When the front heat pump came on and loaded generator
to 22 amps, the battery condition suddenly jumped to full i.e. the
yellow light on RC7 panel said battery full, the visual display said
batteries 100%, the condition meter said inverter charger was now in
float. I had to leave it that way since there was nothing I could do
that would cause the inverter to change from float, etc. I didn't
have my electrical box with me so I couldn't check that way. I'm not
comfortable the batteries are fully charged and was wondering if any
one has experienced something similar or has any ideas.
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Old 01-07-2007, 10:30 AM   #3
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I normally leave my coach plugged in to 110v at house but this year I tried it not plugged in. I place STORE switch off and let it sit until near xmas when we use coach to wrap presents. When I put battiers back in service my panel read 2/3s to the good and meter read 11.4 when its plug in meter would read 13.7. I had forgot to shut off LPG detector. The batts will loose their charge under normal conditions but I was surprized that they didn't loose more with the LP switch not thrown. I was able to start GEN and it charged batts backup to their normal condition also ran ACs and other appliances.
I would say your good to go until spring with everything off with batts at rest, as long as you can turn over GEN you will be allset.
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Old 01-07-2007, 12:31 PM   #4
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by "007":
I normally leave my coach plugged in to 110v at house but this year I tried it not plugged in. I place STORE switch off and let it sit until near xmas when we use coach to wrap presents. When I put battiers back in service my panel read 2/3s to the good and meter read 11.4 when its plug in meter would read 13.7. I had forgot to shut off LPG detector. The batts will loose their charge under normal conditions but I was surprized that they didn't loose more with the LP switch not thrown. I was able to start GEN and it charged batts backup to their normal condition also ran ACs and other appliances.
I would say your good to go until spring with everything off with batts at rest, as long as you can turn over GEN you will be allset. </div></BLOCKQUOTE>

The gen-set starts from the chassis batteries according to a service person who responds to questions on the Newmar Yahoo group. Another Newmar owner told me he has similar situation that until one applies a high load to the generator it charges slow; he said there is no need to keep the load. He said he has discussed with both Newmar and inverter folks but no answer from them. Next time I'm going to try and load generator down from get go and watch charging rate and see what happens.
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Old 01-07-2007, 04:45 PM   #5
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The GEN starts from the house batteries on my coach and I would think yours do also and when your house batts, if they go low, you may have auto start on GEN to bring them up to full charge. I will also say the GEN on mine will give same output no matter what the load, it will kick it up a notch with increased load.
A quick way to find out disconnect your house batt with your store switch and see if GEN starts.
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QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
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Old 01-24-2007, 02:32 PM   #6
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Location: Phoenix Area
Posts: 214
This may be in common with this thread. If you have electrical issues resulting in low or discharged batteries during storage then this may be of some help. I know it's boring but.....

I have had a dikens of a time keeping my batteries charged both coach and chassis during this winter. I have run them down twice now and am sure they are now too stressed to leave in the RV. I had checked everything I thought. I learned a great deal about the electrical wiring and all the fuses and locations as I checked them all. I tested every function of the two solenoids in the engine compartment I could think off including removing the power cable to see if the solenoid is opening and closing. One is the batery disconnect and the other for connecting the two batteries under some conditions like running the engine. Every thing looked good. The other day the chassis was again down to 8 VDC with the RV on shore power. IT's a 15 amp connection but nothing in the RV is turned on even the LP. I just wanted a charge on the chassis and A/C power to the outlets to run my trickle charger for the chassis battery which works great when not in store.

Since the 2 6v batteries were again down I decided to replace them with new TROJAN T-105 S as I had 3 yr old interstates that came with the coach. I did this today and discovered my problem quite by accident.

I have an Intellitec BD-1 disconnect switch above my entry door and battery disconnect solenoid up front. Usally my custom is to park the RV, put the sw on the BD-1 to store and check batteries on the switch. I then plug the shore power cord in and check the A/c to make sure it's at 120v or close thinking I was getting a charge from the converter. WRONG !!! Here's what is real and maybe a miss wired panel I'm not sure. If the shore power is unplugged and the BD switch is in store, the radio etc go off and all is fine -- no drain. If you plug in the shore power then the BD USE light goes on and the radio gets lit indication it is now out of store. What I found out is while in shore power you can hit the store switch and hear the soledoid click and check the chassis battery and there is no charge and the "use" light is still on. Hit the use button (no change to the use light) you hear the click of the solenoid and check the battery and it is being fully charged.

To me there is something dead wrong about this senario and has ruined my batteries in the process. I suspect there are many of us that this has happened to as I read all the threads on battery issues. What do you think. Is it wired wrong? I haven't pulled the panel yet but from the BD-1 manual it points to a miss wire.

http://windsurf.mediaforte.com/roadt...5322019100.pdf

Thanks in advance
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