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02-24-2017, 11:17 PM
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#1
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Member
Join Date: Feb 2017
Location: Rocky Mountain Foothills - Canada
Posts: 86
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Dual 6v battery charging
I don't know anything about electrical. I have a dual 6v battery setup. Can I use a 12v battery charger / maintainer on this setup or do I need something specific to charge ??
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02-25-2017, 12:26 AM
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#2
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,556
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Assuming that you have a RV, why don't you let the converter do the recharging?
Unless you've got a single stage converter.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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02-25-2017, 01:29 AM
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#3
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Member
Join Date: Feb 2017
Location: Rocky Mountain Foothills - Canada
Posts: 86
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Quote:
Originally Posted by bikendan
Assuming that you have a RV, why don't you let the converter do the recharging?
Unless you've got a single stage converter.
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Forgive my lack of knowledge but I was told not to leave the RV plugged in all winter. It would kill my battery? I was told to remove battery, put in heated garage and use a low amp trickle charge during winter. Is this proper or can I just leave the battery on the trailer?
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02-25-2017, 04:07 AM
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#4
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,556
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Quote:
Originally Posted by phln
Forgive my lack of knowledge but I was told not to leave the RV plugged in all winter. It would kill my battery? I was told to remove battery, put in heated garage and use a low amp trickle charge during winter. Is this proper or can I just leave the battery on the trailer?
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Since your 2017 Palomino has a modern 3 stage converter, you don't need a separate charger.
Many of us simply leave the RV plugged in year round.
A charged battery won't freeze.
But some do remove the battery and charge it separately.
The "kill my battery" is a leftover from the old days of single stage converters.
Just like the old story of not putting charged batteries on concrete.
No longer applicable.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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02-25-2017, 04:54 AM
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#5
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Senior Member
Join Date: Feb 2008
Posts: 196
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Hi PHLN,
If you have dual 6 volt batteries, they should be wired in parallel so you are getting 12V total.
Good luck,
Don
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Don and Michele
3 Adult Children - 5 Grandchildren
Present campsite - future homesite
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02-25-2017, 06:11 AM
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#6
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Senior Member
Join Date: Sep 2010
Location: Eastern Ontario
Posts: 4,167
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Quote:
Originally Posted by dmdrj5
Hi PHLN,
If you have dual 6 volt batteries, they should be wired in parallel so you are getting 12V total.
Good luck,
Don
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No, two 6 volts batteries needs to be wired in series to give 12 volts DC...
Also here some info on 12 volt system....
http://www.marxrv.com/12volt/12volt.htm
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Fonzie
2011 Rockwood 8319SS with ProPride 3P hitch/GoodYear Marathons/TST TPMS 507
2019 F350 Ruby Red 6.7l diesel 3.31 axle electronic locker
Yamaha 3000iseb generator:Progressive Ind. EMS-HW30C : Eastern Ontario
Nights Camped: 2014 (18) 2015 (18) 2016 (36) 2017 (32) 2018 (42) 2019 (28) 2020 (35)
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02-25-2017, 01:04 PM
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#7
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Member
Join Date: Mar 2016
Location: Gresham, OR
Posts: 50
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I love me a good battery thread.
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02-25-2017, 01:17 PM
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#8
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Member
Join Date: Jul 2016
Location: Granum Alberta Canada
Posts: 88
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Quote:
Originally Posted by fonzie
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Fully agree. This is the correct way to get 12 volts from 6 volt batteries. If you hook them in parallel you still only have 6 volts.
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02-25-2017, 01:23 PM
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#9
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Senior Member
Join Date: May 2014
Location: Waterloo Region
Posts: 729
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Back to the topic of charging... as long as you use a "smart" charger (I'm partial to the NoCo line) its almost impossible to hook them up wrong. They have reverse connection detection and battery voltage detection. Some can even be set for type and temperature. The only thing you could get wrong is not hooking up across both 6v batteries, which you could tell if it detects 6v instead of 12v.
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2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam
Self restraint is for the young. I'm old and want it NOW!
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02-25-2017, 01:54 PM
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#10
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Senior Member
Join Date: Dec 2014
Posts: 122
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Different question, sort of. I have two 12v batteries that I have removed from my 27RR. Can i hook them in parallel on my work bench and have them charge together with a trickle charger?
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02-25-2017, 02:16 PM
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#11
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Senior Member
Join Date: Jan 2015
Location: Englewood FL
Posts: 2,797
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Quote:
Originally Posted by Rhoadzie
Different question, sort of. I have two 12v batteries that I have removed from my 27RR. Can i hook them in parallel on my work bench and have them charge together with a trickle charger?
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I a word...Yes. Better to charge them separately but you will get a charge in parallel, but one battery may dominate.
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2015 335DS
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02-25-2017, 02:27 PM
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#12
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Member
Join Date: Mar 2016
Location: Gresham, OR
Posts: 50
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They will equalize.
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02-25-2017, 02:52 PM
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#13
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Senior Member
Join Date: Jul 2014
Location: Northfield MN
Posts: 161
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Quote:
Originally Posted by Rhoadzie
Different question, sort of. I have two 12v batteries that I have removed from my 27RR. Can i hook them in parallel on my work bench and have them charge together with a trickle charger?
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I was wondering about this too. Assuming it's OK, do you hook charger positive cable to the positive terminal of one battery and the charger negative cable to the negative terminal of the other battery? Or, can they be hooked to the same battery?
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2018 Grand Design Imagine 2600RB
2019 Chevy Silverado 2500HD 4x4 LT Crew Cab, Vortec 6L V8, 4.10 Rear Axle
Equal-i-zer 1,200/12,000# Hitch
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02-25-2017, 03:06 PM
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#14
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Member
Join Date: May 2013
Posts: 49
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Good reading for RV electrical
I always recommend this title for RV electrical needs:
RV Electrical Systems by Bill and Jan Moeller
It gives you a leg up on all electrical issues in your RV
Good luck!
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02-25-2017, 03:09 PM
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#15
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Member
Join Date: Jul 2016
Location: Granum Alberta Canada
Posts: 88
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Quote:
Originally Posted by Mark Ulmer
I was wondering about this too. Assuming it's OK, do you hook charger positive cable to the positive terminal of one battery and the charger negative cable to the negative terminal of the other battery? Or, can they be hooked to the same battery?
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Yes you can hook the charge cables to the same battery. As someone else has stated they will equalize in charge. Although if one is older or damaged it will have an effect on the better battery.
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02-25-2017, 03:14 PM
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#16
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Senior Member
Join Date: May 2014
Location: Waterloo Region
Posts: 729
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Quote:
Originally Posted by Rhoadzie
Different question, sort of. I have two 12v batteries that I have removed from my 27RR. Can i hook them in parallel on my work bench and have them charge together with a trickle charger?
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If they have been out for any length of time you should probably initially charge them separately. Then test with a voltmeter to ensure they are both in a fully-charged state before you parallel them. This will ensure that one doesn't try to charge the other, potentially with the full current it is capable of, when you connect the parallel cables.
Always safety first when working around lead-acid batteries!
__________________
2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam
Self restraint is for the young. I'm old and want it NOW!
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02-25-2017, 04:18 PM
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#17
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Senior Member
Join Date: Dec 2015
Posts: 211
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Battery check
Always check each cell with a densety tester, not a volt meeter!!
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02-25-2017, 04:57 PM
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#18
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Senior Member
Join Date: Apr 2013
Location: Idaho
Posts: 2,058
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Quote:
Originally Posted by DaveSchwartz
If they have been out for any length of time you should probably initially charge them separately. Then test with a voltmeter to ensure they are both in a fully-charged state before you parallel them. This will ensure that one doesn't try to charge the other, potentially with the full current it is capable of, when you connect the parallel cables.
Always safety first when working around lead-acid batteries!
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Just what I do. Charge each battery fully, then check the fluid levels (add distilled water if necessary), check the specific gravity of each cell, clean, and then connect in parallel to my Battery minder and leave it plugged in for the winter in the garage.
My Deka deep cycle batteries are 4 years old and still going strong (or at least they were in November .)
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02-25-2017, 07:34 PM
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#19
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Senior Member
Join Date: Nov 2015
Posts: 840
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Two 6-volt batteries must be connected in series as shown in the provided sketch above, when using a 12-volt charger or converter system. Most important is to check periodically to make sure the fluid level in each battery is maintained above the actual battery plates. If the fluid level goes low enough to expose the surface of the conductor plates it will cause irreversible damage to the battery's capacity. Not catastrophic or a fire hazard, but enough to cause loss of life of the affected battery.
Two 12-volt batteries connected in parallel can be charged easily on a work bench with a quality charger, but why not just leave them installed in the RV??
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02-25-2017, 08:28 PM
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#20
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Senior Member
Join Date: Jul 2014
Location: Northfield MN
Posts: 161
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Quote:
Originally Posted by Jakie-Boy
Two 6-volt batteries must be connected in series as shown in the provided sketch above, when using a 12-volt charger or converter system. Most important is to check periodically to make sure the fluid level in each battery is maintained above the actual battery plates. If the fluid level goes low enough to expose the surface of the conductor plates it will cause irreversible damage to the battery's capacity. Not catastrophic or a fire hazard, but enough to cause loss of life of the affected battery.
Two 12-volt batteries connected in parallel can be charged easily on a work bench with a quality charger, but why not just leave them installed in the RV??
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In a word, cold. Around, here it's frequently below zero in the winter. (Although, it doesn't seem to get as cold as it used to. Make of that what you will.) Unused batteries sitting for months in the cold can lose their charge fairly quickly.
__________________
2018 Grand Design Imagine 2600RB
2019 Chevy Silverado 2500HD 4x4 LT Crew Cab, Vortec 6L V8, 4.10 Rear Axle
Equal-i-zer 1,200/12,000# Hitch
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