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Old 07-28-2015, 06:52 AM   #1
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Battery Mat

I am in the process of extending the height of my battery box in preparation for installing 6 volt batteries. Yesterday I removed the old batteries. Under the plastic tray there was a lot of corrosion. I wire brushed and repainted the interior of the box. The new batteries are too large for the OEM tray. I have seen battery acid absorbing mats on the market. Anyone here have actual experience using them and if so how effective are they in reducing corrosion?
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Old 07-28-2015, 01:47 PM   #2
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Haven't seen it happen. Open cell batteries will eventually corrode what's around them, IMO.

I'd try them, but not expect too much.
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Old 07-29-2015, 07:27 AM   #3
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I spoke to my battery guy yesterday about the mats. He said waste of time. He said that the corrosion is generally not caused by spilled acid but by out gassing. All wet batteries will do that. He recommended instead to just use a a piece of rubber floor mat cut to size instead to support the batteries in the box. . I will be doing that.
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Old 07-30-2015, 07:36 AM   #4
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Mine uses a piece of wood under T105 Trojans at bottom of exterior battery well. The wood is okay, but the steel bottom is rotted after 25-years. Humidity in PNW and elsewhere PLUS outgassing is the way I read it. Some convective air flow might have helped.

Thx for the batt mat opinion.
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Old 07-30-2015, 08:06 AM   #5
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Quote:
Originally Posted by AWCHIEF View Post
I am in the process of extending the height of my battery box in preparation for installing 6 volt batteries. Yesterday I removed the old batteries. Under the plastic tray there was a lot of corrosion. I wire brushed and repainted the interior of the box. The new batteries are too large for the OEM tray. I have seen battery acid absorbing mats on the market. Anyone here have actual experience using them and if so how effective are they in reducing corrosion?
Would you post some photo's of your progress?
I'm particularly interested in how the battery support structure between the frame members has to be modified.
I'm considering the same on my Safari
Thanks!
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Old 07-30-2015, 08:26 AM   #6
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I always leave a generous coating of Baking Soda in and around the battery tray. It easily hoses out at battery inspection time, and I replace with new after the area dries out.
More just a preventive measure in case of a spill.

If you don't top off your batteries above the indicated ring level, normal charging should never cause the battery to spill. (may happen on a new battery that is topped off while undercharged, and then charged fully?)

I use a piece of asphalt roofing for under the battery, but anything that does not collect moisture would be OK. I would not use wood, as it holds moisture and will rust the metal under it.

Dave
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Old 07-30-2015, 08:34 AM   #7
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You might try these....


They work pretty well on our old Ford...

Along with some CP2 on the terminals & pads.

Bob
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Old 07-31-2015, 07:30 AM   #8
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All done

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Old 07-31-2015, 07:55 AM   #9
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some batteries have a nipple where you can attach a vinyl hose and run outside the box to take care of outgassing and leakage.
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Old 07-31-2015, 09:46 AM   #10
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some batteries have a nipple where you can attach a vinyl hose and run outside the box to take care of outgassing and leakage.

Trojan makes a watering kit. I do not know how or if that would work for out gassing discharge.
My Miata used a battery with a vent hose routed to under the trunk.
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Old 07-31-2015, 11:26 AM   #11
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Battery Mat

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I wondered how that would look. Raised the roof. I'll have to lower the floor so that the door to the propane tank compartment can still be removed.

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That's the electrical panel and solar controls door off on the right.
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