3. CHARGING TEST 3.1 BEFORE TEST The engine must be ON during test. 3.2 STEPS 1) Press the "OK" button to display the main menu. Then select "3. Charging Test" and press the "OK" button to confirm. 6. About 2) Start your engine, then press the "OK" button to conduct a "Ripple Test". The interface will stay for 5 seconds and then automatically jump to next page. Please start engine, Press OK to continue. 3) Follow the on-screen instructions to increase your engine speed to 2500 r/min and hold for 5 seconds. Then press the "OK" button and wait a few seconds for the test result.