Auto Battery stuff

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Usually it's acid fumes coming up through the case... the posts are not sealed as well as you'd imagine.

It's stopped or slowed down using those dumb felt washers and by going real easy on the torque when clamping in the first place.
 
Hydrogen gas causes the corrosion by venting or through a crack in the battery. I have used battery terminal spray which is like a vinyl paint. While it doesn't stop it it does slow it down. You can also try the felt pads that they sell at auto parts stores.
 
An AGM battery (vs. a standard lead acid type) also works wonders in this regard.
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Originally Posted By: dailydriver
An AGM battery (vs. a standard lead acid type) also works wonders in this regard.
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+1 to this!

I'm never going back to heavy/sh!tty/gassy batteries.
 
I use the Red and Green felt thingies, they work for me and act as an added reminder which is Pos and which is Neg.

Off topic but, I'm beginning to think it strange (in a good way) that it seems I never seem to have battery problems!
I mean, the battery in my 85 Toyota PU dates from 2001, the Matrix battery is OEM 2007, the battery in the Triumph Spitfire is a $9 U1 Walmart Lawnmower battery from 2005 and our Lawnmower has the same battery, bought at the same time.
All work fine and I never touch them.

What am I doing right?
 
I have used a lot of glass mat for solar,,,My lead acid average 5 years...Longest 7 years...Glass mats use less lead so prices haven't soared.....Still more expensive....Don't email me about sears Glass mats.....Bad Reputation.....Around here Lots of washboard roads...Looking into them now.....The company I deal with uses them in all vehicles...They admit mostly smooth roads, but say they last 10 years....My problem is fixed station solar batteries don't last that long and they have $400 chargers...Really good ones..Charlie
 
Originally Posted By: expat

What am I doing right?


Canadian winter isn't doing you any favors...so clearly you're magical.
 
In addition to the felt washers I spray the terminals with Permatex High Tack. It never hardens and will even 'heal' itself after you hook jumper cables to the terminals. I re-coat every two or three years.
 
Originally Posted By: expat
What am I doing right?


All the side reactions that cause loss of capacity and overall degradation speed up with temperature. In cooler environments, they just naturally are slower...
 
Originally Posted By: Wampahoofus
Originally Posted By: expat

What am I doing right?


Canadian winter isn't doing you any favors...so clearly you're magical.


I'm on Vancouver island, our climate is quite mild, seldom below freezing but it can reach into the 90's during the summer.
 
from wiki:

The corrosion is caused by an imperfect seal between the plastic battery case and lead battery post allowing sulfuric acid to react with the lead battery posts. The corrosion process is also expedited by over charging. Corrosion can also be caused by factors such as salt water, dirt, heat, humidity, cracks in the battery casing or loose battery terminals. Inspection, cleaning and protection with a light coating of dielectric grease are measures used to prevent corrosion of battery terminals.
 
My sons battery was like that, ate all the plating off the cheap positive terminal on his Chevy. The torque needed to break the lugs loos will bend the post and brake the seal. The only way to get a new terminal from Chevy was to buy a complete positive cable.

It's not hydrogen gas it is sulfuric acid fumes.

I slathered a battery grease around the post and then put on the terminal and slathered it with the grease. But there is no cure other than a truly sealed battery like a AGM.
 
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