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Unread 02-17-2015, 10:22 AM   #11
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Default Re: Battery De-Mister

It appears that some acid as well as water is expelled through the vent caps during the charge cycle. Distilled water can be replaced but does the loss of acid affect the battery over a period of time, or is the initial concentration such that this is not a concern? Does anyone think the layer of oil would impede the charging process?
I was sure someone would have encounter this produce and would have a or
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Unread 02-17-2015, 10:29 AM   #12
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Default Re: Battery De-Mister

It kind of makes sense to me and they make a very nice pitch, may I suggest that if you try it out you report your findings back to us.
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Unread 02-17-2015, 04:44 PM   #13
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Default Re: Battery De-Mister

I'm surprised the battery gurus haven't chimed in yet, so I'll give in a shot.

I believe we are talking about 2 different actions. 1- evaporation 2- gassing

If I were in charge of cart maintenance at a course in Las Vegas, I would try the oil in 1 or2 carts and keep track of the water replacement of the whole fleet. I believe there would be a labor saving result with the oil due to less evaporation.

One of the by-products of charging is gassing. There is no way to increase the acid concentration without gassing. So the real issue is how violently the gassing occurs, and I think the guys that are using the maintainers ( trickle chargers) are giving us the clue about violent gassing. Given the same level of discharge, which is going to have the most violent gassing, a 20 amp charger or a 2 amp charger?

Just thinking out loud.
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Unread 02-17-2015, 05:42 PM   #14
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Default Re: Battery De-Mister

I did some googling around, and found some RV guys talking about it. Some swear by it. Some call it snake oil. Some say it only helps to prevent evaporation while others say it helps keep the bubbles from flying everywhere while charging.

All agree that it has been around ever since batteries were invented. Railroads used it in their big batteries. They talked about using pure mineral oil from the drugstore too.
It's all a new concept to me, so I have no opinion one way, or the other.
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Unread 02-17-2015, 07:28 PM   #15
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Default Re: Battery De-Mister

I goggled battery oil today also and Edison Battery Company was adding mineral oil to their batteries manufactured for used in electric cars, trains and light houses at the turn of the century.
I was surprised at the RV and Marine forums that have debated adding 3 to 4 oz. of pharmacy grade mineral oil to each cell of deep cycle batteries for years now. And yes there were people who would never put oil in their batteries and others who say they are getting 8-10 years with reduced corrosion issues.
A bottle of mineral oil from the drug store is certainly more cost effective than buying De-Mister.
I came away with the impression that oil will not make your battery last longer but should reduce electrolyte loss and and corrosion issues. I think I will just maintain my batteries until the summer time and may give the mineral oil a try after my warranty is up
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Unread 02-17-2015, 08:13 PM   #16
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Default Re: Battery De-Mister

if you read the directions in their pdf file

http://www.thermoil.com/wp-content/u..._de-mister.pdf

you remove some of the electrolyte water to add their oil

then down a ways it says



so i gather you imbalance the batteries til you add in the removed water ... if their oil stops evaporation then why would you need to replace it ??
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Unread 02-17-2015, 09:31 PM   #17
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Default Re: Battery De-Mister

" if their oil stops evaporation then why would you need to replace it ??" If that is all we were going to do to that battery then you would never have to replace it.

But that's not the only thing we're going to do. We are going to charge it. when we charge it 2 things happen. We release a hydrogen atom (gassing) from a water molecule (H2O) and the fluid becomes denser (SG increases).

When the fluid becomes denser, the volume decreases and the fluid level drops.

When the fluid level drops below a certain level we add fluid and all this will happen with zero evaporation.

If I had a fleet to worry about in the middle of a desert, I might give a test. But since I have 1 cart on the mild side of Oregon, I think I'll pass.
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Unread 02-17-2015, 10:05 PM   #18
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Default Re: Battery De-Mister

there is a mild side of Oregon ??
DAMMN !!

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Unread 02-17-2015, 10:19 PM   #19
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Default Re: Battery De-Mister

Legalized pot in July. It's going to get milder


.
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Unread 02-17-2015, 11:16 PM   #20
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Default Re: Battery De-Mister

I got 6 years out of my Trojan 12 volt batteries that showed on charts approximate life span of 4 years. And actually they still were working fine, just did an overhaul/upgrades and knew their time was near.

My secret... Never taking them down past 48.4 volts or 50% and always making sure water levels were near the top or about 1/2" above the plates. And one more thing, I kept them charged ALWAYS after each use. But I believe that was exactly what Trojan recommended... Along with many others here on BGW. There is no friggin way I'm going to try putting Oil in my $800 batteries that I just purchased. But I'd love to hear about someone that got 8 years out of 12 volt Trojans using Snake Oil additives... Then that would be really something to brag about.

Sorry... Just stating one persons opinion on this, mine.
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