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Old 02-09-2013, 07:34 AM   #1
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Battery acid absorption mat

This has probably already been discussed here, but I forgot to mention in an earlier post about a battery acid absorption mat my wife ran across on the internet. It has good reviews and can be bought in a size that fits well in a 4 bank system. I have always had problems with corrosion in the battery area and thought this would help. It's just been in for a couple of weeks so the jury is still out as far as I am concerned. I think it costs around 3 sawbucks.;Here is one I found: http://http://www.ebay.com/itm/Acid-...1d0ffd&vxp=mtr
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Old 02-09-2013, 08:53 AM   #2
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TTS, I had that problem when we had the motorhome and finally added some mineral oil to the four 6 volt batteries. Stopped the gassing and the corrosion and I rarely had to add water. This time I bought some Thermoil and added it to my two 6 volt batteries last year. So far no issues. The batteries in the motorhome were 3 years old when I added the mineral oil and were almost 8 years old when I sold it last year. They were still going strong.

I hesitate to even mention this because on the Monaco forum if anyone mentioned adding mineral oil to their batteries it was usually followed by a stern lecture from some folks who thought it was good way to ruin batteries. At least this time I got a product made for the job but it could just be blue colored mineral oil packaged to sell at 20 times the price. Anyway, works for me.
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Old 02-09-2013, 09:06 AM   #3
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Quote:
Originally Posted by JDT View Post
TTS, I had that problem when we had the motorhome and finally added some mineral oil to the four 6 volt batteries. Stopped the gassing and the corrosion and I rarely had to add water. This time I bought some Thermoil and added it to my two 6 volt batteries last year. So far no issues. The batteries in the motorhome were 3 years old when I added the mineral oil and were almost 8 years old when I sold it last year. They were still going strong.

I hesitate to even mention this because on the Monaco forum if anyone mentioned adding mineral oil to their batteries it was usually followed by a stern lecture from some folks who thought it was good way to ruin batteries. At least this time I got a product made for the job but it could just be blue colored mineral oil packaged to sell at 20 times the price. Anyway, works for me.
Interesting, wonder how someone came up with that. Probably some chemist type. I don't know what the warranty period is on a battery. Is that why you waited 3 yrs? How much do you add.
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Old 02-09-2013, 10:28 AM   #4
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Conspiracy theorists would suggest that battery manufacturers don't mention the alleged advantages of adding mineral oil to batteries because it makes them last longer and that means they don't sell many batteries.

Others might point out that they either don't mention it or are ambivalent about it because it is poor practice that done incorrectly, might actually reduce battery life.

I find that a weekly hose out of the battery compartment is enough to keep it clean. Of course the first consideration is having a charging system that doesn't cause significant gassing in the first place, and not overfilling the cells. If it does get neglected, bicarb-soda dissolved it warm water will quickly get rid of built up "corrosion" on terminals and nearby areas.
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Old 02-09-2013, 12:22 PM   #5
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TTS, I added the mineral oil after 3 years because that is when I had to remove the batteries to clean and repaint the storage area. I had read about the mineral oil trick on the Monaco forum and decided why not as I did not want to do that job again.

A 12 ounce bottle of Thermoil will treat one battery, 6 or 12 volt. I suppose you visited their website. Has lots of info, but of course they are trying to sell the product. I did check my battery compartment this morning and no corrosion and the cells are full. I have a garage for it and keep it plugged in to 50 amp all the time. Of course, I've only had it since June but I'm hopeful the Thermoil does what is it supposed to. So far so good. There were a number of folks on the Monaco forum that used it.

I didn't worry about the warranty on the batteries as I figure if I can't afford a new battery I can't afford the Excel. In response to the charging system Excel uses Charge Wizard which is supposed to be a 4 stage charger. The motorhome had a Magnum ME 2012 inverter/converter which also had a 4 stage charger, if I remember correctly.
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