Hyundai GENESIS COUPE BK 2010 Manual page 183

Connect clamps securely. If "CHECK CONNECTION" message is displayed on the screen, reconnect clamps
securely.
2. The tester will ask if the battery is connected "IN-VEHICLE" or "OUT-OF-VEHICLE". Make your selection by
pressing the arrow buttons; then press ENTER.
3. Select CCA and press the ENTER button.
CCA : Cold cranking amps, is an SAE specification for cranking batteried at -0.4°F (-18°C).
4. Set the CCA value displayed on the screen to the CCA value marked on the battery label by pressing up and down
buttons and press ENTER.
The battery ratings(CCA) displayed on the tester must be identical to the ratings marked on battery label.