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04-20-2019, 08:46 PM
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#1
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2016
Location: Forest City, FL
Posts: 782
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House batteries life?
So we have now had our 17 DS4310 for 2 1/2 years, wow does time fly by! Just curious in general how long should our house batteries last before needing replacement? Ours are always kept on as we have a 50 amp outlet on side of our house when coach isn’t being used.
Thanks as always!
__________________
Brian
2017 Dutch Star 4310 (bunks)
2018 Ford Explorer Platinum
Previous: 2010 Tiffin Allegro Red 38QBA
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04-20-2019, 09:07 PM
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#2
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Aug 2015
Location: Northwest Washington State or Western Montana, depending on the season.
Posts: 3,473
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Quote:
Originally Posted by fsudelt
So we have now had our 17 DS4310 for 2 1/2 years, wow does time fly by! Just curious in general how long should our house batteries last before needing replacement? Ours are always kept on as we have a 50 amp outlet on side of our house when coach isn’t being used.
Thanks as always!
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Are they AGMs? If so, you should have at least a couple of years life left...probably more. I figure that anything over five years on a house battery is a bonus.
All that said, anything man-made can fail...and, at any time.
TJ
__________________
Jim (W7DHC), Diane & Mini Schnauzers, Lizzy & Ellie
2018 Mountain Aire 4047
2014 Honda CR-V 2020 Lincoln Nautilus "toad" w/AF1
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04-20-2019, 09:31 PM
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#3
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RV Nut
Newmar Owners Club Winnebago Owners Club Nor'easters Club
Join Date: Oct 2014
Posts: 1,932
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Quote:
Originally Posted by fsudelt
So we have now had our 17 DS4310 for 2 1/2 years, wow does time fly by! Just curious in general how long should our house batteries last before needing replacement? Ours are always kept on as we have a 50 amp outlet on side of our house when coach isn’t being used.
Thanks as always!
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It really depends on how you take care of them.
Do you make sure to never discharge them less than 50%?
NEVER, EVER let them get fully discharged?
My OEM Newmar AGM’s are still going strong after 4+ years.
__________________
2015 Newmar Ventana 4037 - All Electric
2012 Jeep Wrangler Unlimited Rubicon TOAD
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04-20-2019, 09:41 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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OEM Interstate U-2200 batteries in our '02 DSDP lasted 10 years. Standard golf cart batteries, not AGM.
__________________
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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04-20-2019, 09:45 PM
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#5
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Senior Member
Join Date: Nov 2011
Location: Full time RV'er
Posts: 5,124
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The average summer time RV'er usually gets 7 years out of their batteries, even with an accident of full discharge or two. Others that full time can get 10-12 years. Periodic maintenance helps them last the longest. In storage, removing the ground leads helps them stay healthy.
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04-20-2019, 10:37 PM
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#6
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Nov 2018
Posts: 2,461
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How long a battery lasts depends on what you expect out of it. Some folks that are connected to shore power most or all of the time and the batteries see only occasional light loads may carry on well beyond what might be considered a normal life. Technically speaking the batteries may actually no longer be delivering their rated capacity but if you don't need it, then they're still serviceable for you. At some point though the calendar will win, or they'll succumb to some other fate but if they're working for you then they're as good as new ones. If your demands are right at the limit of what a battery can deliver when new, then calendar life will ultimately be shorter than what you might expect because they'll only go so many cycles before even a normal amount of degradation puts them below the user's requirement. Throw in the vagaries of a less than perfect charge regimen, ignored for a cold winter or two and any number of less than optimum use and storage conditions and the useful life can be impacted. So with all those variables there's no way to predict what kind of life a set of batteries may have, because real life is nothing like the cycles defined in the data sheets.
Mark B.
Albuquerque, NM
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04-21-2019, 12:08 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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Usage, maintenance, and abuse are the variables.
Lots of dry camping with repeated discharge cycling to 50% DoD? Check the battery manufacturers chart - typical is expected about 500 for 6v lead acid deep cycke batterues, wet and AGM. So a couple three years could be normal.
If always nearly fully charged, on shore power most of the time. The charge cycles with little DoD can be thousands. So several years. 5+ is common.
Now for maintenance. Let a wet battery go dry and it will likely greatly shorten the life. Don't equalize, cutting off quite a bit of life, especially if dry camp often with deeper discharging.
Now for abuse. Let your battery get completely discharged to 3 or 4 volts, likely an be damaged then and there. Let then get discharged to 9-10v or so. Greatly shortened life. Sometimes you don't even know it occured. Your RV is in the shop for repairs. They run the batteries down, but recharge before handing it back to you.
__________________
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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04-21-2019, 04:40 AM
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#8
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Apr 2016
Posts: 1,412
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Brian, Our RVs were born around the same time. I'll be testing our batteries at the NKK Balloon Rally in October this year. It will be five days without hookups. I don't anticipate any problems but I will check them before we leave. Will let you know. The connections on mine were a little loose when I checked a year ago. You may want to make sure the connections are clean and torqued properly if you haven't already done so.
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Paul, Christy and Leap
2017 Dutch Star 4018, 2021 Jeep Wrangler
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04-21-2019, 05:07 AM
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#9
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Senior Member
Join Date: Apr 2010
Location: Portage, MI
Posts: 466
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My OEM Interstate 12v's are still going strong at 9 years. We don't do a lot of boondocking. When in storage, I have knife switches on the negative terminals that I open. Will probably replace them this year, just because.
__________________
2011 Newmar Canyon Star 3411; Workhorse W22; 8.1L; Allison 6-speed
2013 Honda CRV
Portage, MI
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04-21-2019, 05:35 AM
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#10
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2016
Location: Forest City, FL
Posts: 782
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Quote:
Originally Posted by ptw
Brian, Our RVs were born around the same time. I'll be testing our batteries at the NKK Balloon Rally in October this year. It will be five days without hookups. I don't anticipate any problems but I will check them before we leave. Will let you know. The connections on mine were a little loose when I checked a year ago. You may want to make sure the connections are clean and torqued properly if you haven't already done so.
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Thanks Paul & everyone else. Just something that came across my mind the other day. We do next to no dry camping, all use is on hookups or generator running. Guess we should be good for awhile. I’ll check the connections to make sure all looks good. Appreciate all the insightful comments!
__________________
Brian
2017 Dutch Star 4310 (bunks)
2018 Ford Explorer Platinum
Previous: 2010 Tiffin Allegro Red 38QBA
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04-21-2019, 05:45 AM
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#11
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,308
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Any Battery can "Short Out" internally at any time........even new ones. Best to load test them from time to time to make sure they all are performing properly. A bad battery in the bank will take the life out of the other's.......and cause over charging.
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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04-21-2019, 06:07 AM
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#12
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2016
Location: Forest City, FL
Posts: 782
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So on this topic and what brought it up last night & then it just happened again.
We are on 50 amp hookups. Twice now our AGS has kicked on saying due to low battery warning. Both times it’s happened while my wife was cooking using the cook top and microwave, while the floor heat (all 3 zones) & water heaters were on. Not sure if too many items are on at same time could cause this to happen? I say this as we don’t use floor heat much due to mainly being in Southeast but we’re in Atlanta right now and last 2 days it’s been in the low 40’s. Thanks!
__________________
Brian
2017 Dutch Star 4310 (bunks)
2018 Ford Explorer Platinum
Previous: 2010 Tiffin Allegro Red 38QBA
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04-21-2019, 06:27 AM
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#13
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2016
Location: Forest City, FL
Posts: 782
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House batteries life?
Our management system did load shed the microwave so I’m guess we must of overloaded both times...
__________________
Brian
2017 Dutch Star 4310 (bunks)
2018 Ford Explorer Platinum
Previous: 2010 Tiffin Allegro Red 38QBA
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04-21-2019, 06:58 AM
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#14
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Senior Member
Join Date: Jul 2014
Posts: 35,317
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See if you have a Hybrid inverter/charger.
It will go to invert mode to supplement your incoming shore power and help keep things operating.
When that happens, the AGS may be detecting low batteries and start the generator to charge them. Probably won't though, because the inverter is in invert mode.
With AGS off, or set to a lower voltage threshold, the inverter/charger would switch back to charge mode once the load drops.
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