Dodge 2015 Charger - Owner Manual - Manual (Page 520)

Preparations For Jump-Start
The battery is stored under an access cover in the trunk.
Remote battery posts are located on the right side of the
engine compartment for jump-starting.
NOTE:
The remote battery posts are viewed by standing
on the right side of the vehicle looking over the fender.
Remote Battery Post Locations
1 — Remote Positive (+) Post
2 — Remote Negative (-) Post
518 WHAT TO DO IN EMERGENCIES