TOUCHING. • ALWAYS DISCONNECT THE NEGATIVE CABLE FROM THE BATTERY FIRST AND RECONNECT IT LAST. 3) Once the clamps are properly connected, the battery tester will power on automatically and be ready to conduct tests. (Red) (Black) Figure 3.3.1 SECTION 4 HOW TO USE Battery Test WARNING: Before the test, the engine and all other accessory loads must be off to ensure accurate results. The battery testing function only applies to 12V lead-acid batteries (24V batteries are not supported). 1) Select BATTERY TEST and press [ENTER / PRINT] . Figure 4.1.1 EN I 13 MAIN MENU BATTERY TEST CRANKING TEST CHARGING TEST REVIEW DATA LANGUAGE ABOUT EXIT ENTER