2) The device will jump to main menu automatically after 3 seconds, then select "CHARGING TEST". MAIN MENU BATTERY TEST CRANKING TEST CHARGING TEST REVIEW DATA LANGUAGE ABOUT 3) Press "ENTER/PRINT" to enter the "RIPPLE TEST" interface. CRARGING TEST RIPPLE TEST PLEASE START ENGINE, PRESS ENTER TO CONTINUE. 12.98V 4) Press "ENTER/PRINT" again, or wait for a few seconds to enter the "CHARGING TEST" interface. CHARGING TEST INCREASE SPEED TO 2500 R/MIN , KEEP IT FOR 5 SECONDS . PRESS ENTER TO CONTINUE 5) The tester prompts the operator to "Increase RPM to 2500r/min and keep it 5 seconds". Press "ENTER/ PRINT" to get the test result: EN I 12