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Deuce Battery Hold Down for Group 31 Batteries

Valence

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Davis County, UT
In 2013 I replaced my failed, stock 6TL batteries with a pair of Group 31 batteries from NAPA P/N: 7235.
http://www.steelsoldiers.com/showthread.php?124577-Electric-problem&p=1551667&viewfull=1#post1551667

For over 3 and 1/2 years I used a single ratchet strap to hold down the batteries. This early spring I noticed that part of the strap had melted - likely due from a battery spark, or acidic gasses. I decided it was past time to replace the poor, temporary solution with something better.

I've used an 11 gauge, 1/2" x 1" rectangular tube and welded 4" of 1/8" thick x 1" wide flat to the end (flush with the "top" of the flat). The over all rod length is 23-1/8". The 1/4" holes are drilled at 1/2" down and 1/2" in from either end of the flat (3" separation), then matching holes were drilled off the center of the metal battery box (I measured the box at about 13-3/8" wide, so the holes were placed at 5-3/16" and 8-3/16" from the front, 1-1/16" down from the top, as these group 31 batteries are 8-1/2" tall).

I have yet to cut some wood to fill the leftover side-to-side space in the battery box. A length of 2x4 (side ways) would be just about perfect, but I may need to cut some different wood as I'd like a tight fit. The third battery is for the 12V alternator and 12V accessories. The 12V dedicated battery is a bit shorter than the others, so I am going to add sections of a rubber mat below the bar (or under the battery) to make up the difference.

2017-05-20 15.59.08.jpg 2017-05-20 20.06.42.jpg 2017-05-20 21.14.23.jpg 2017-05-20 21.08.14.jpg 2017-05-20 21.08.34.jpg 2017-05-20 20.06.50.jpg 2017-05-20 20.06.19.jpg 2017-05-20 21.14.38.jpg

I used self etching primer, Krylon flat black, and then Plasti-Dip to rubber coat the center bar.

2017-05-21 10.14.58.jpg

[HR][/HR]
A little bit of background and disclosure. This was actually the very first project that I've welded. In late 2013 I took a local 15 hour "Hobbyist Welding for Beginners" class. Last year, I purchased a very nice Millermatic 211 with cart, and then later, a CO2/Argon tank.

2017-05-20 21.10.09.jpg

This year I purchased a 25' extension cord for the welder, that I was even able to add text down the length of it (for security reasons). I put my name, telephone and email address. (Both red and blue options for those who might care about the color of their welding equipment).

https://www.amazon.com/gp/product/B016P7SGWK/
719gsjz0fDL._SL1500_.jpg

I practiced a bit on some free scraps to get used to my mask, gloves, and gun. Don't worry, I was already chastised by my brothers for "improper" practicing by not cleaning the paint and rust from the scraps first. The reason I am posting all this is to help and encourage others to "start somewhere". It doesn't matter where you start, only that you start and keep going.

2017-05-20 19.10.06.jpg

I had one of my brothers, who's well practiced in welding, weld one end of this rod, so when I went home and attempted my first welding project on my own, I would have a good reference.

2017-05-20 15.59.14.jpg 2017-05-20 21.08.51.jpg 2017-05-20 21.08.44.jpg

I think I did pretty good, even if I didn't have a "proper" welding table:

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orren

Active member
Steel Soldiers Supporter
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Live Oak, Florida, USA
I'm using heavy duty bungee cords that don't give any corrosion problems.
I'm using four 12 volt batteries(NAPA 8427) in series/parallel without a troublesome
battery box.

Does anyone have any comments on this arrangement? Is there a reason
batteries need to be bolted down?
 

Jericho

Well-known member
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Location
Landaff NH
Hit a big frost heave and slam the batteries into the cover of the battery box, and you will be welding free hand, ( been there,
done that) we will have been answered. Having said that, I need to put my J bolts and bracket back in.
 

Valence

Well-known member
Steel Soldiers Supporter
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Location
Davis County, UT
Hey Valance. A proper welding table is whatever you have on hand ! A table "does not make a "welder" . A welder makes a table a welding table.
Exactly! Though the bit of weld spatter did tend to burn my wood topped work bench. :p


I'm using heavy duty bungee cords that don't give any corrosion problems.
I'm using four 12 volt batteries(NAPA 8427) in series/parallel without a troublesome
battery box.

Does anyone have any comments on this arrangement? Is there a reason
batteries need to be bolted down?
Hit a big frost heave and slam the batteries into the cover of the battery box, and you will be welding free hand, ( been there,
done that) we will have been answered. Having said that, I need to put my J bolts and bracket back in.
orren, Jericho is right. If the batteries are not sufficiently secured, a big bump (or even a crash) can send them flying. It is like putting a 9V battery in your pocket with your keys - it'll short and can cause serious burns. Or like the very unfortunate folks who put a "dead" 9V battery in the trash can and it finds something metal to short on and then starts a fire and burns their house/garage down.

Similar can happen in a vehicle, and the more batteries add more potential terminals for a short to occur.

On my batteries pictured above, I've also added rubber battery terminal covers to help protect from other accidental shorts. I purchased them from Oshkosh Equipment. They were used, but were still in very good condition!
http://www.oshkoshequipment.com/products/detail/10/4257/Battery-Terminal-End-Protector-Cover
4257.jpg 4257-1.jpg


Oh , almost forgot, Like your hold down , Keep welding , just takes practice !!!!
Thanks Jericho! I'm sure I'll have many more welding opportunities. That's what happens with more tools, the scope of projects can grow.
:roll: :cookoo:
 
Last edited:

Valence

Well-known member
Steel Soldiers Supporter
2,112
555
113
Location
Davis County, UT
I finished my DC sub-panel that was spawned by the addition of supplemental electrical air compressors, so I could finally put the batteries back in. A 3/8" piece of rubber filled the gap very nicely on the shorter battery. I added some fender washers to the outside of the battery box and four pieces (two on each side) of 2x4 filled the end spaces very nicely!

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