My sisters battery in her KJ died, I just got a new yellow top but my stock battey in my KK ran fine.... anyone know if I can toss that in so she doesnt got to buy a new one?

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08 Revenge- Rock Lizard (Skink Sliders & Gecko Roof Rails), High Clearance Trimmed Front Bumper, Mopar skids, Riddler Diff Cover, JBA (5.5 Arms, 6" rear Springs, Front Adjust-A-Struts), 32" DuraTracs, Superior 4.56's, Front & Rear ARB Lockers, Fastman Throttle Body, AEM Intake, Hypertech Tune, Custom Ram Air, RunCool Louvers

Read the top of the battery. If the size and CCA match, along with post style more power to ya.

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Patriot Blue 04 KJ
OME HD lift w/ 1/8" Clevis lift
LT 245/75/16 Revo's
Husky liners
Aeroturbine 2525
Amsoil

What year is her KJ? If it's 2003 or later your stock battery should work fine. 2002s use a different size and yours probably won't fit.

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2002 KJ (un)Limited 4x4: OME HD lift, ARB bullbar, Warn 4X flood lights, Skid Row tranny skid, Mopar engine, transfer case and fuel tank skids, Boulder Bars, 245/75/16 Goodyear Duratracs on Moab wheels.

Its an 04

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08 Revenge- Rock Lizard (Skink Sliders & Gecko Roof Rails), High Clearance Trimmed Front Bumper, Mopar skids, Riddler Diff Cover, JBA (5.5 Arms, 6" rear Springs, Front Adjust-A-Struts), 32" DuraTracs, Superior 4.56's, Front & Rear ARB Lockers, Fastman Throttle Body, AEM Intake, Hypertech Tune, Custom Ram Air, RunCool Louvers

Drop it in.

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2002 KJ (un)Limited 4x4: OME HD lift, ARB bullbar, Warn 4X flood lights, Skid Row tranny skid, Mopar engine, transfer case and fuel tank skids, Boulder Bars, 245/75/16 Goodyear Duratracs on Moab wheels.

Also, it's a good idea to test the voltage afterward with the vehicle running so you can be sure there's nothing wrong with the charging system. If the alternator's bad, she'll just run the replacement battery down right away.

Here's a link that shows how to test the charging system if you don't know how already:

http://www.aa1car.com/library/charging_checks.htm

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2002 KJ (un)Limited 4x4: OME HD lift, ARB bullbar, Warn 4X flood lights, Skid Row tranny skid, Mopar engine, transfer case and fuel tank skids, Boulder Bars, 245/75/16 Goodyear Duratracs on Moab wheels.

Or just take it to the TLE at walmart. They can do this for free.

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'02 Jeep KJ 4x4- Gone
'92 YJ- lift, swampers, bumpers....yeah, its pretty sweet.
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I also can not be held liable for any jeep breakage or life problems caused due to my advice being taken.