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Unread 07-17-2007, 02:21 PM   #1
79bigmack
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JK Battery Group Size?

Anyone know what the group size is on the JK's battery?

Will a Group 31 battery fit?

thanks,

Mack

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Unread 07-17-2007, 06:39 PM   #2
79bigmack
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Anybody??

I know some of yall are running winches...hopefully you upgraded the battery!!
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Unread 07-18-2007, 08:41 AM   #3
Volley
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I have a deep cycle in mine but don"t recall the size. Will look when I go out to the garage.
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Unread 07-18-2007, 10:13 AM   #4
MichaelW
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Yeah I got a Red Top but when I went to Summit Racing I just said I need a Red Top for my new JK and they gave me a box. I didn't pay attention to size either. I'll go check.
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Unread 08-14-2007, 09:10 PM   #5
IndyJpr
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I had an Optima (group size 34) in my old Jeep and was also wondering what size the JK had...couldn't find an answer so I just tried it - it fit!

FYI for anyone considering an Optima - the Optima's posts are closer together than the stock battery so the connectors work better if they are adjusted to an 90 angle verus straight.

Regarding OP question:

It looks like W and H would be OK, L might be a problem. The 31 looks like it is about 2 3/4" longer than the 34. There only about 3/4 to 1" space and each side of the 34 BUT the plastic has some give so you might be able to squeeze it in there.... The JK uses clamps at the base of the battery for retention so the new battery would need to be compatible (have the little ridges).

Hope this helps...
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Unread 08-14-2007, 09:44 PM   #6
79bigmack
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Quote:
Originally Posted by IndyJpr
I had an Optima (group size 34) in my old Jeep and was also wondering what size the JK had...couldn't find an answer so I just tried it - it fit!

FYI for anyone considering an Optima - the Optima's posts are closer together than the stock battery so the connectors work better if they are adjusted to an 90 angle verus straight.

Regarding OP question:

It looks like W and H would be OK, L might be a problem. The 31 looks like it is about 2 3/4" longer than the 34. There only about 3/4 to 1" space and each side of the 34 BUT the plastic has some give so you might be able to squeeze it in there.... The JK uses clamps at the base of the battery for retention so the new battery would need to be compatible (have the little ridges).

Hope this helps...


Thanks!
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Current Ride: '08 Grand Cherokee 4x4
Past trucks:
2000 Cherokee Sport 4x4 :(
2004 Discovery :(
2003 F-150 4x4
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