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07-18-2013, 09:59 PM
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#1
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Senior Member
Newmar Owners Club
Join Date: Oct 2011
Location: On the road.
Posts: 1,432
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Correct water level for wet cells
I decided to check the batteries today for the first time since we purchased it in May. The water level was above the plates by 1/8". I remember that years ago when I worked at a gas station, that the proper level was to the ring at the bottom where the caps goes. Is that still correct today? I searched the site and do not find a definitive answer.
So can you help me out?
Thanks
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John & Diann
2014 Dutch Star 4364
2016 Ford Edge Sport
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07-18-2013, 10:02 PM
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#2
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bnb1313@aol.com
Monaco Owners Club
Join Date: Feb 2008
Location: Western Montana on the Divide
Posts: 1,561
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Right or wrong, that's where mine are filled to.
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Bob Retired Army Traveling alone now, had to put Charlie the Beagle down :(.
2008 Camelot 40 PDQ 4 slides ISL400 towing a 2020 1500 GMC Sierra Denali 4x4 Crewcab
Western MT in summer, AZ, NV in winter
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07-18-2013, 10:11 PM
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#3
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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Because of the way that the House Batteries are charged, they recommend that the distilled water / electrolyte level be half way between the top of the plates and the ring. This reduces the amount of off-gassing and corrosion.
Dr4Film ----- Richard
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07-18-2013, 10:17 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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Quote:
Originally Posted by Dr4Film
Because of the way that the House Batteries are charged, they recommend that the distilled water / electrolyte level be half way between the top of the plates and the ring. This reduces the amount of off-gassing and corrosion.
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Or you could put mineral oil in each cell and almost totally eliminate corrosion. Here are two pictures of my batteries after putting 4 oz oz of mineral oil in each cell. I put the mineral oil in in 2004 and they weren't cleaned for 4 years when these were taken.
__________________
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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07-18-2013, 10:30 PM
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#5
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Junior Member
Join Date: Jan 2013
Posts: 28
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trojan batteries said it should be just enough to cover the plates and do not overfill vince
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07-18-2013, 10:30 PM
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#6
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Senior Member
Join Date: Jan 2008
Location: Western Canada
Posts: 228
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Hello very interesting do you use just reg mineral oil ( type and or brand) and 4 oz per cell I need to try that thanks.
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2005 Beaver Patroit Thunder 42' Vicksburg Quid Slide.
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07-19-2013, 05:56 AM
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#7
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Senior Member
Newmar Owners Club
Join Date: Oct 2011
Location: On the road.
Posts: 1,432
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Thanks for the quick responses. I filled to about an 1/8" below the ring. I'll leave it there.
I'll research more about the mineral oil addition.
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John & Diann
2014 Dutch Star 4364
2016 Ford Edge Sport
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07-19-2013, 06:38 AM
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#8
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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There are two schools of thought on the proper level.. The manufacturer says that it's the same as it was when you were a pump jockey, the bottom of the split ring.
Myself I like 1/8 to 1/4 inch BELOW the split ring.. A bit of extra ventelation helps to reduce battery acid being forced out of the battery if you quick charge.,
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Home is where I park it!
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07-19-2013, 08:01 AM
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#9
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Senior Dude
Triple E Owners Club
Join Date: Sep 2010
Location: Somewhere, BC.
Posts: 5,613
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Where do you buy mineral oil? I've looked and never found it.
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Les (RVM12), Bonnie and 4 leggers Shelby and Tea Cup
Triple E Empress A3802FW Diesel Pusher 330 Cat
FMCA-420438 Good Sam
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07-19-2013, 08:07 AM
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#10
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Senior Member
Fleetwood Owners Club
Join Date: Jan 2010
Posts: 1,391
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Drug isle in about any store.
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07-19-2013, 08:29 AM
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#11
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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Quote:
Originally Posted by Mr_D
Or you could put mineral oil in each cell and almost totally eliminate corrosion. Here are two pictures of my batteries after putting 4 oz oz of mineral oil in each cell. I put the mineral oil in in 2004 and they weren't cleaned for 4 years when these were taken.
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For those that choose to install mineral oil in your batteries, understand that you have just voided the warranty on your batteries.
I would suggest using Water Miser Caps which work great. I use them on all 4 of my 6 VDC house batteries. And they do not void the battery warranty.
Water Miser Battery Vent Caps
Dr4Film ----- Richard
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07-19-2013, 08:41 AM
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#12
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Senior Member
Fleetwood Owners Club
Join Date: Jan 2010
Posts: 1,391
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Since I added mineral oil to my batteries 3 years ago I have not had to add any water or clean up the compartment. We spend 6 months at a time in the MH.
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07-19-2013, 07:29 PM
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#13
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Senior Member
Join Date: Feb 2012
Location: Small Town USA , California
Posts: 1,349
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I bought the battery watering system before I had heard about the mineral oil trick. I can check/add water to my 4 6volts in about 1 minute and my hands don't even get dirty. 2 of my batteries I added and they are really hard to access but now it's a piece of cake. I tried those water miser caps on the 2 inaccessible batteries and they didn't work for me me and I'm not sure why. When I checked the batteries they were both low on water.
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07-19-2013, 07:37 PM
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#14
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Senior Member
Join Date: May 2011
Posts: 967
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I agree on the water miser caps....didn't work for me. I've also used the mineral oil thing and have no complaints, but no way I could get several years without adding water. For me the solution was the Pro-Fill system.
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Jack & Maggie
04-Rexhall Roseair (37)
Cummins ISC / Spartan
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