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11-06-2018, 09:13 AM
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#21
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Montana Master
Join Date: Aug 2015
Location: Mena
Posts: 504
M.O.C. #17723
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Hey Pete,
We have the 3611RL, too. Our old batteries the dealer installed were around 100 amp hour 12 volts, which gave us a total of around 200 AH. They were better than I expected from the dealer.....
We wanted to increase the time the fridge was able to run while not hooked to landline.
I did not make any other changes to my rig other than listed in the parts list.
We'll see how much time we get from this upgrade, but expect to have plenty of battery power left over after a day on the road. 
__________________
Ron & Rhonda
2021 3230CK Montana Legacy w/ Super SolarFlex
(old rig) 2015 Montana 3611RL 8K I.S., Disk Brakes, Sailun Tires
2015 F350 XLT Crew Dually 20K B&W Companion
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11-06-2018, 09:32 AM
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#22
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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Just remember that 50% of the batteries rated amp hour capacity is the absolute go- no go point. Beyond that SOD WILL damage lead acid batteries.
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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11-06-2018, 11:37 AM
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#23
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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Quote:
Originally Posted by jetskier
It's actually kWh not just kW. The 460 is Amp-hour. Check your units (reminds me of my engineering professors drilling this statement)...  |
Tough crowd!!
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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11-06-2018, 01:55 PM
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#24
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Montana Fan
Join Date: Feb 2017
Location: North Bay Area
Posts: 351
M.O.C. #19469
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Quote:
Originally Posted by rohrmann
Doesn’t that give you 920 AH? I thought they all added up for the total, otherwise only two batteries would have worked for 460AH.
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I have 4 6v 225 amp hour golf cart batteries, So I like you thought that gave me a total of 900 amp hours. But it was pointed out to me a few months ago that it takes 2 6v batteries to make 12 volts which equals 225 12 volt amp hours, so my 4 6v 225ah= 450 12 volt amp hours. I was very surprised, but after thinking about it it made sense. Sure wish I had 900 amp hours like I thought I did 
__________________
2004 2955RL 2nd owners 400 watt solar, 2000 inverter/charger 4-6volt golf cart battery's & a champion 3400 remote start dual fuel genny
2000 F-350 swd crew cab long bed 7.3 power stroke transflow 77 gal fuel tank. 
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11-06-2018, 03:24 PM
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#25
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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Not to rain on your parade but you only have an absolute maximum of 225 usable amp hours without damaging your batteries.
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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11-06-2018, 03:49 PM
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#26
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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LOL where is the twist the knife emoji?
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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11-07-2018, 03:52 AM
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#27
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Montana Fan
Join Date: Oct 2017
Location: Fulton
Posts: 456
M.O.C. #20688
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Can anyone show a picture of how you placed and wired Your multiple 6 V batteries.
Trying to picture what it looks like in the compartment.
Thanks
__________________
Wayne & Malinda
2018 Montana 3731FL
MORryde IS/DiscBrakes
2017 F450 DRW KR 4x4
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11-07-2018, 06:35 AM
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#28
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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I am going a different route so can't provide an actual pic however the smaller sized 6V deep cycles should form a square with connections like this:
If you use AGM batteries you won't need to worry about venting or an enclosure as you will with lead acid.
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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