Correct water level for wet cells

[PushedAround]

Ok, I understand that the mineral oil will float on top of the water/acid and I guess create a thin barrier, enough to keep the electrolytes from escaping with any moisture that bubbles off. Is that it? How is water loss?

[Dr4Film]

If people are interested in NOT having to add distilled water to your batteries, or doing ANY battery maintenance whatsoever, I would suggest purchasing a complete set of AGM sealed batteries which require no maintenance and will not contribute to any off-gassing or corrosion.

T6V-AGM 6 Volt

They are only a mere $300 each and you would typically use four or more so that's only $1200 plus for less AH's too.

Some people like them and some people don't. It's whatever rocks your RV.

Dr4Film ----- Richard

[TRAILERKING]

I did the 4oz. per cell in my Interstates and seems good so far. Got the oil from Walmart in the laxatives section.

[Walter5555]

I fill our batters up to the split in the cell and always have for the last 15 years.
If you keep your terminals clean and the batters full of water they should last a very long time.
I also have Solar Panels to keep them charged up.
Just a thought.

[DAN L]

Originally Posted by Dr4Film

If people are interested in NOT having to add distilled water to your batteries, or doing ANY battery maintenance whatsoever, I would suggest purchasing a complete set of AGM sealed batteries which require no maintenance and will not contribute to any off-gassing or corrosion.

T6V-AGM 6 Volt

They are only a mere $300 each and you would typically use four or more so that's only $1200 plus for less AH's too.

Some people like them and some people don't. It's whatever rocks your RV.

Dr4Film ----- Richard

i installed 2 lifeline 6v agm batteries on their sides in my battery compartment 5 years ago. i went from about 190 ah battery capacity to 300 ah. that is a big increase.
not bad. the price was kinda high, but worth it to me. i expect to get at least another 5 years of service with them.

Lifeline GPL-6CT Battery

[mgscott4]

I am old school. I have been using one of these for years to fill my batteries. It has an automatic cutoff when full. Distilled water only.


Plews 75-030 Auto Shut Off 2 Quart Capacity Plastic Battery Filler : Amazon.com : Automotive

[KSCRUDE]

I did the mineral oil trick when our rig was a month old. Year old now and I have never added water. And I seem to have no corrosion or gassing effects. Who cares about warranty. I've never seen anybody check a bad battery for mineral oil while it was under warranty. Just don't happen. If they said you have mineral oil in you battery , so no warranty, I would say whats mineral oil, and what's it doing in my battery. They are just not going to look or know. You can't even tell its in there by looking. Walmart sells it in the laxative department of their drug stores.And I filled them to the bottom of the ring. That's where I have filled them for over forty years.

[Stan.Birch]

Originally Posted by JohnT

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?

Right on!

[Dunner]

I used to use one of those 2 quart thingies, but haven't used it since I mineralized.

[Mr_D]

Originally Posted by dogpatch

Where do you buy mineral oil? I've looked and never found it.

Got mine at Wal*Mart for 1.69 for 12 oz as I remember.

[Mr_D]

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.

I guess I should have added that the OEM Interstate U-2200's went one month short of 10 years and still were OK for our use but we were headed out on a trip and I didn't want trouble in a parking lot somewhere.

[Dunner]

Thought you were slipping there for a minute Mr_D.

[Dogpatch]

So if I want to put mineral oil in my batteries now and they are full up to the bottom of the plastic rim, how much do I take out? Down to the plates? I'm not sure and don't want to screw them up!

[ChasA]

X2 on the battery filler bottle. $10.00 at OReilly auto parts.