Battery Terminal

Move back and forth to check that the battery terminals (A) are loose or corroded.
If the terminals are corroded, clean them.

Fig 1: Checking Battery Terminals For Loose Or Corroded
Courtesy of KIA MOTORS AMERICA, INC.

WARNING: If battery positive connection is loose, disconnect ground (GND) cable first before attempting to remove or tighten plus connection, to prevent personal injury.
If the battery clamp on battery positive (+) terminal is not seated securely:
1. Turn ignition switch OFF and disconnect the battery negative (-) terminal.
2. Tighten battery clamp (A) on battery positive (+) terminal
  Battery (+) terminal :
  
  7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)
  
  Fig 2: Locating Battery Clamp
  Courtesy of KIA MOTORS AMERICA, INC.
If the battery clamp on battery negative (-) terminal is not seated securely:
1. Tighten battery clamp (A) on battery negative (-) terminal.
  Battery (-) terminal :
  
  4.0 ~ 6.0 N.m (0.4 ~ 0.6 kgf.m, 3.0 ~ 4.4 lb-ft)
  
  Fig 3: Locating Battery Clamp
  Courtesy of KIA MOTORS AMERICA, INC.