Contents:

The battery is in the trunk under the compartment cover.
When replacing the battery, disconnect the negative (-) cable (1) and remove the positive (+) battery fuse box (2).
Remove the battery mounting bracket (3).
WARNING - Touching metal surfaces in the trunk under the compartment cover

Do not touch metal surfaces in the trunk under the compartment cover while the engine is operating or hot. Doing so could result in serious personal injury. Turn the engine off and wait until it cools down or wear gloves to replace the battery from the luggage room.
Your vehicle has a maintenance-free, calcium-based battery.
When recharging the battery, observe the following precautions:
Reset items
Items should be reset after the battery has been discharged or the battery has been disconnected.
Kia Stinger (CK) 2018-2023 Owner's Manual: Automatic Transmission System
Special service tools Special Service Tools Tool Name / Number Illustration Description Inhibitor switch guide pin (Parking switch guide pin) 09480-D2100 Used for fixing "N" range when installing inhibitor switch (Used for fixing "P" range when installing parking switch) Troubleshooting Troubleshooting Limp Home Mode Features a fail-safe function that prevents dangerous situations in the event of a transmission failure.Kia Stinger (CK) 2018-2023 Owner's Manual: Climate Control Air Filter
Description and operation Description Located in the blower unit, the climate control air filter eliminates foreign materials and odor. The particle filter performs the roles of an odor filter as well as a conventional dust filter to ensure pleasant interior environment. Repair procedures Replacement 1. Remove the stopper (B) from the glove box (A).