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Old Today, 10:04 AM   #1
JD-OHIO
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Default 12 volt Battery in Battery Box

I have a 31 S/W Town Sedan. It's been converted to 12 volts. Is there a 12 volt battery the right size for the original battery box so that the original hold downs can still be used? Anyone have any photos showing how you secured your battery in the original box? A group 25 is not wide enough for the original corner brackets to work.
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Old Today, 10:06 AM   #2
McMimmcs
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Default Re: 12 volt Battery in Battery Box

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Originally Posted by JD-OHIO View Post
I have a 31 S/W Town Sedan. It's been converted to 12 volts. Is there a 12 volt battery the right size for the original battery box so that the original hold downs can still be used? Anyone have any photos showing how you secured your battery in the original box? A group 25 is not wide enough for the original corner brackets to work.
Just one of the consequences of playing games with Henry’s design.
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Old Today, 10:17 AM   #3
jrelliott
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Default Re: 12 volt Battery in Battery Box

Made my own hold down. Saw it here on the Forum. It is a curved piece of round steel rod with washers welded to the end to attach to the battery box hold down. Used wooden spacers to position the battery in the box. I believe the battery is a group 24.
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Old Today, 11:00 AM   #4
Y-Blockhead
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Default Re: 12 volt Battery in Battery Box

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Originally Posted by JD-OHIO View Post
A group 25 is not wide enough for the original corner brackets to work.
Quote:
Originally Posted by McMimmcs View Post
Just one of the consequences of playing games with Henry’s design.


As you can see from this chart the Group 1 6v everyone uses doesn't fit the original size battery box either. The Group 25 12v is the closest I have found... so far.
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Old Today, 11:03 AM   #5
Ruth
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Default Re: 12 volt Battery in Battery Box

I use the Group 25 12v also.

Group 25
https://www.batteriesplus.com/productdetails/sli25

Group 24
https://www.batteriesplus.com/productdetails/sli24
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Last edited by Ruth; Today at 11:17 AM.
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Old Today, 11:13 AM   #6
duke36
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Default Re: 12 volt Battery in Battery Box

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The A vendors sell brackets for the Optima batteries if you go that route. Also, check if the batteries are designed for various climate extremes based on inner plate parameters.
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Old Today, 02:40 PM   #7
CarlG
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Default Re: 12 volt Battery in Battery Box

I had a battery box fabricated that works great for my group 25 battery, For a hold-down, I am using the hold-down from a Ford Bronco II that stretches across the middle of the battery.
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Old Today, 02:50 PM   #8
ModelAMike1930
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Default Re: 12 volt Battery in Battery Box

I made my own hold down for an optima battery using aluminum stock and pop rivets I am sure you could do the same for a 12volt battery
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Old Today, 05:11 PM   #9
shew01
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Default Re: 12 volt Battery in Battery Box

I’m still fairly new to the hobby. Battery boxes are add-ons, correct? Is this an actual box of some sort? If so, what is the advantage of using it?

My car just has something like this: https://www.brattons.com/battery-box-support.html


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