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09-16-2016, 06:19 AM
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#1
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Member
Join Date: Sep 2014
Posts: 57
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Adding 2nd house battery
Anyone,
I just purchased a used, 25' Class C that has ONE house battery but appears to have enough room to house a second battery. Question: IF I attempt to wire in a second battery is it possible the inverter would NOT accommodate a second battery? Perhaps the MH ONLY came with one battery for a reason! Responses would be much appreciated!
P.S. I intend to use it at my hunting property that does not have electric hookup.
tks
Chuck K.
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09-16-2016, 06:27 AM
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#2
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Senior Member
Join Date: Sep 2012
Posts: 8,055
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If you have an inverter it won't care. Your converter will charge one or two batteries. Check yours but both our units had a tray that would hold two batteries whether one or two were installed. That seems to be normal with Ford. On ours the front battery can slide forward a bit so the rear comes out. Put the front in first.
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09-16-2016, 06:33 AM
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#3
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Member
Join Date: Sep 2014
Posts: 57
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Quote:
Originally Posted by nothermark
If you have an inverter it won't care. Your converter will charge one or two batteries. Check yours but both our units had a tray that would hold two batteries whether one or two were installed. That seems to be normal with Ford. On ours the front battery can slide forward a bit so the rear comes out. Put the front in first.
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Thanks!
Used MH and came with very little useful info. I will check model/SN on converter and inverter and see if I can ferret out answer to my question. FYI: Unit is on Chevy chassis and additional battery will be next to existing battery and not in front or back.
Thanks again!
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09-16-2016, 07:23 AM
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#4
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Member
Join Date: Jul 2015
Location: Bountiful, Utah
Posts: 52
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As long as you wire it correctly, you'll have no issues, your converter and inverter will work normally. I recently installed 2 additional batteries ( 4 total house batteries, 1 chassis battery) I'm loving it!
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09-16-2016, 09:27 AM
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#5
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Senior Member
Join Date: Mar 2016
Location: Moving out of Connecticut
Posts: 656
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Chuck,
If you plan to parallel an existing 12V battery, you will probably be disappointed. You can do it, but the two will not properly share load and charge. If you have room, go to a pair of golf cart batteries or a single 4D or 8D.
Frank
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09-16-2016, 02:38 PM
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#6
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Senior Member
Join Date: Jul 2014
Posts: 35,411
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Paralleling batteries is done all of the time.
Even 4, 6 volt batteries are in a series / parallel arrangement.
On the rare occasion that a poorly designed setup does discharge unevenly, a equalizer charge, or even a long duration charge, will bring them back to normal.
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09-16-2016, 02:47 PM
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#7
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Senior Member
Join Date: Sep 2012
Posts: 8,055
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And if he has a chevy chassis he does not have room for 4D or 8D batteries.
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09-16-2016, 03:01 PM
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#8
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,119
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Two six volt batteries to replace the one twelve volt would work for you.
__________________
08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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09-16-2016, 03:03 PM
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#9
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Senior Member
Monaco Owners Club
Join Date: Oct 2014
Location: Rigby, Idaho
Posts: 3,941
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If you're adding a battery, first, how old if the one you have? If it's several years old, like 4-5, maybe trade it in on a pair of 6v batteries instead. Two 6v batteries have about 20% more current than two 12v batts. Wired correctly, your converter (makes 12v from 120v) won't know the difference.
__________________
Cheers,
TonyMac
2006 Monaco Safari Cheetah 40PMT
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09-16-2016, 07:02 PM
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#10
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Senior Member
Ford Super Duty Owner
Join Date: Mar 2009
Location: Oregon
Posts: 2,754
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Drop in to The 12volt Side of Life (Part 1) for a lot of info about batteries. Excellent site.
__________________
2016 Bounder 34T Anniversary Edition
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09-16-2016, 07:45 PM
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#11
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Senior Member
Join Date: Jul 2014
Posts: 35,411
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Another site loaded with info on batteries is Yandina.com. Check out the FAQ section.
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09-17-2016, 08:11 AM
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#12
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Senior Member
Join Date: Aug 2014
Posts: 795
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I would add a second battery, but I would only do it if they were both new batteries. 6 volt or 12 volt either way. Adding a new with an old is not a great idea in my opinion. 2 6 volt you would wire in series/parallel, 2 12 volt you would wire in parallel. Good luck
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09-17-2016, 09:20 AM
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#13
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Senior Member
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,772
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Here would be my choice if you have room and the $$$
Trojan T1275 Heavy Duty 12v Battery
12V 150Ah Flooded Lead Acid Golf Cart Battery
Length: 12.80, Width: 7.10, Height: 10.80 Inches
These babies are $209 each but for the most usable AH available.
With 300 AH verses 225 of most 6 volt. For a clairify two 6 volt are wired series four or more are wired series/parallel and 12 volt wired parallel with the charge wires run from positive on one to the negative on the last.
LEN
__________________
2004 Clss C 31' Winnebgo
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09-19-2016, 12:37 PM
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#14
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Senior Member
National RV Owners Club
Join Date: Nov 2015
Location: Monrovia, IN
Posts: 544
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Quote:
Originally Posted by F76Marion
Chuck,
If you plan to parallel an existing 12V battery, you will probably be disappointed. You can do it, but the two will not properly share load and charge. If you have room, go to a pair of golf cart batteries or a single 4D or 8D.
Frank
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This is where we were when we first bought our used coach. It had a 12v chassis battery of course and a single 12v deep cycle marine battery for the house. I dumped the 12v house battery and purchased (2) 6v golf cart style batteries from Batteries Plus. Wire the pair in series as stated will give you 12v.
__________________
1998 National Seabreeze 1330 Limited Chevrolet P37 chassis 7.4 Vortec 2014 Jeep JKU Sport Toad
Me, Beautiful DW, sometimes kids & grandkids
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