⑤ Unloaded Voltage: The voltage measured when turning off the on-board electrical appliances ⑥ Ripple: A vehicle's battery operates on one-way direct current (DC) electricity, while alternators output alternating current (AC) electricity. In this process, the power needs to go through the diode rectifier to turn into a direct current - that's when the ripple occurs ⑦ Tap Save to save the test result to your mobile device as an image ⑧ Tap Share to share the test result with your coworkers or clients Real-Time Voltage Select Real-Time Voltage . You can check the real-time voltage and the recorded voltage waveforms. Figure 5.7.1 Figure 5.7 . 2 EN I 20