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08-05-2015, 08:00 PM
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#1
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Senior Member
Join Date: Jul 2012
Posts: 364
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8 year old 6 Volt Batteries
I have 4 x 6 volt house batteries that are the originals and are 8 years old. Checked them after sitting for 4 days disconnected and each battery got reading of 6.1. Still ok? Or pushing my luck. I don't dry camp.
Jim Hurkett
Chilliwack BC
2007 Monaco
2009 Mini Cooper Conv Toad
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08-05-2015, 08:05 PM
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#2
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Senior Member
Tiffin Owners Club
Join Date: Sep 2012
Location: Ambler, PA
Posts: 2,853
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Quote:
Originally Posted by Hurk
I have 4 x 6 volt house batteries that are the originals and are 8 years old. Checked them after sitting for 4 days disconnected and each battery got reading of 6.1. Still ok? Or pushing my luck. I don't dry camp.
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That's low. If you topped them up you should see about 6.6~6.7 volts, and they shouldn't drop much at all if just sitting for 4 days. I'd say they're getting to the end.
__________________
Larry & Cheryl Oscar, Louie, Ranger & Henry (our Springers)
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08-05-2015, 08:07 PM
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#3
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Senior Member
Join Date: Feb 2015
Location: Dayton, Nevada
Posts: 298
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I've gotten over 8 years of service from several sets of 6v batteries, so that's not that unusual. I'd be a bit concerned about the 6.1 volts, though. That's quite low. Give them a good charge, then check them with a hydrometer. If they check good, keep using them. If not, well, lots of folks don't even get near 8 years from theirs.
Good luck!
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AC7FM
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08-05-2015, 08:09 PM
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#4
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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We went 10 years on our Interstate U-2200's and they were still good enough to go through the night with the furnace on.
The present Magna has 4 8D AGM's and they are pretty well shot after only 6 years. Still functional but the cases on a couple are bulging and warm to the touch.
Battery life depends on how well you treat them and the charging circuit.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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08-06-2015, 08:07 AM
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#5
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,704
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Full charge on a 6v battery should read about 6.3v, so yours are showing some deterioration if 6.1v is their best after a charge. So yes, I would be planning for a replacement before too long. Since you don't dry camp, low capacity is not an immediate concern, but your charging system will be working overtime trying to get the battery voltage up where it belongs (12.65v for a pair of 6v's in series). New batteries would make it's life easier as well as giving you more hours of use when not hooked to shore power.
See battery voltage vs capacity tables at Measuring State-of-charge - Battery University)
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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08-06-2015, 09:00 AM
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#6
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Senior Member
Join Date: Feb 2012
Location: Lake County, IL
Posts: 1,584
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A 6.1V reading after 3 days may not really be abnormal. It depends on how much parasitic load you have. The CO/propane detector, entertainment center, and possibly some other items all draw some current. The only accurate way to know, is to have them load tested.
Joel
__________________
Retired electronics engineer. Avid paddler & birder.
2011 Silverado 2500HD, diesel, 4x4,crew cab, 8' bed
Palomino Puma 253FBS (27' 5er) & '94 19' Class B
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08-06-2015, 09:05 AM
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#7
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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Age-wise, yes probably approaching end of life. Agree with checking with a hydrometer. Also a load box is good to have. I have one I bought via AutoZone if I recall, about $60.
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Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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08-06-2015, 09:12 AM
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#8
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Senior Member
Join Date: Jul 2014
Posts: 35,442
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Quote:
Originally Posted by J Birder
A 6.1V reading after 3 days may not really be abnormal. It depends on how much parasitic load you have. The CO/propane detector, entertainment center, and possibly some other items all draw some current. The only accurate way to know, is to have them load tested.
Joel
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The OP stated the batteries were disconnected. No parasitic load from outside sources.
If you do no dry camping at all, just remove them and replace with 2, 6 Volt or 1, 12 volt battery. A walmart group 27 12 volt will work for you.
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08-06-2015, 09:16 AM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./Pollock, LA.
Posts: 1,556
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If in doubt, replace them. They are 8 years old, they had a good life, replace them for piece of mind.
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, WG T4 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
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08-06-2015, 09:23 AM
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#10
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Senior Member
Join Date: Jun 2015
Location: The hilly part of Texas
Posts: 468
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Help me understand..... six year old batteries that have served you well. They are the "heart and soul" of your coach's electrical system when off grid/generator.
They are slightly low on voltage, indicating less that full charge after sitting several days........
Six year old batteries = 72 months of service. And you have doubts about replacing them????
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08-06-2015, 11:21 AM
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#11
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Mar 2012
Location: Weston, Fl.
Posts: 916
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Change them out.
__________________
2003 Newmar Kountry Star 3905, Freightliner XC chassis with CAT 330. Winnie the black lab, pretty Airbus captain wife, retired airline pilot with 11 grandkids. UH-1 pilot (Huey) U.S. Army 1967-1983. RVN 68-69. Northern Idaho my summer home.
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08-06-2015, 11:36 AM
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#12
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Senior Member
Join Date: Jul 2012
Posts: 364
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Yes 8 years of service can't complain. Will replace with 4x 6 volt before I go south for winter. Thanks for all input.
Jim Hurkett
Chilliwack BC
2007 Monaco
2009 Mini Cooper Conv Toad
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08-06-2015, 02:55 PM
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#13
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Senior Member
American Coach Owners Club
Join Date: Jul 2007
Location: SW Florida
Posts: 2,971
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Quote:
Originally Posted by Hurk
I have 4 x 6 volt house batteries that are the originals and are 8 years old. Checked them after sitting for 4 days disconnected and each battery got reading of 6.1. Still ok? Or pushing my luck. I don't dry camp.
Jim Hurkett
Chilliwack BC
2007 Monaco
2009 Mini Cooper Conv Toad
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What luck are you pushing and as long as they are still working for ya, I don't see the problem.
Both times I changed mine out, with the last time being most recent in NJ, I just turned in the old ones at Sam's club and put in the new ones. The first time was in Wash. State in 09 and we had lunch in their parking lot, while replacing them.
I guess if you're not going to do it yourself, then you might want to reconsider, but this can be the case with anything for both the house and the chassis.
By the way, the first set went 10yrs before they got too weak for a night at Walmart.
__________________
07 Revolution LE 40E_1 1/2 Baths_Spartan MM Chassis_06 400HP C9 CAT_ Allison 3000
Dinghy_2010 Jeep Wrangler JKU ISLANDER
1998 36ft. National Tropi-Cal Chevy Model 6350 (SOLD)
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08-07-2015, 07:07 AM
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#14
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Senior Member
Join Date: Jun 2015
Location: The hilly part of Texas
Posts: 468
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Good Man! Now you can relax and not worry about Mamma berating you in the middle of a trip when the old duffers crapped out and you had to spend a night with failing power....and spend two days getting them replaced! Go. Get. A. Beer!
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