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" to enter the "RIPPLE TEST" interface. CRARGING TEST RIPPLE TEST PLEASE START ENGINE, PRESS ENTER TO CONTINUE. 12.98V 4) Press "ENTER" 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" to get the test result: EN I 12