Need a little help from the lost community. My 06 kj decided not to crank the other day. Click, click,click, and then nothing. I charged the battery and the jeep cranked and ran all day. The next morning the battery was completely dead. After a charge I was able to get to advance auto and they replaced the battary for no charge (purchased 13 months back).

Everything was fine until this morning. Click,click,click, nothing. After a boost she has run all day. Surely I would not be lucky enough to get two bum batteries? Thoughts??

either two bad batteries or a bad alternator.

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

You most likely got unlucky and got 2 bad batteries.

Only the dealership can test the charging system in the KJ properly as it is PCM controlled.