I too just went through this prior to seeing this forum. Hopefully it will help others. Basically brand new battery was dead due to hood light staying on (light fell off of mounting clip and was stuck on). Used jump box, cranked jeep, started fine, but died. Did this over and over again. Even after keeping foot on the gas for about 30 seconds, same thing. So eventually, I just kept my foot on the gas for about 2 minutes at 2000rpm. After that it idled fine. I went on about a 15 minute test drive and it is fine now.
Zone 4,33s,ProRock44,roofrack,Zeon 8s,grill guard,washer relocated,DIY tire carrier,sliders.