Flyer92

Came home from a work trip and had to get car jumped at the airport. The following day I replaced the battery and now the car won't start and there is no power in ACC modes. Headlights, hazard lights, door lights work but nothing on the dash or anywhere else in the car. Replaced negative battery cable and still no luck with getting the car powered. Any suggestions?? I'm at a complete loss.

The car is a 2015 TLX V6 Tech

NDNV

If your TLX requires an AGM battery, then it is required. Find one that has the highest CCAs.
Another is a bad starter, especially if you have the start/stop feature.

18TLXAspec

Sometimes stores don't properly rotate their battery inventory so you could end up w/ one that's low. You could also have gotten a defective battery. Whatever the case, you should test it to make sure it's good. If you can't do it at home, take to an auto parts or battery store, most will test it for free. Some will even charge it for you if that's all it needs.