User's Manual

Table Of Contents
56
LAUNCH Professional 919X User Manual
Notes: On-load voltage shown in the test result refers to the charging
voltage when there is a load. It evaluates the on-load capacity of the generator.
When dierent auto parts are opened, the load voltage will be generated. The
on-load voltage will greatly vary depending on the auto parts being opened.
8.1.5 Report
This function allows you to view, share and delete the test reports.
8.1.6 Precautions on battery test
The accuracy of battery voltage, charging voltage, start voltage is 0.01V
in test results; CCA (Cold Cranking Amps) precision is 5CCA. Generally,
charging voltage value is greater than starting voltage.
Starting voltage range: The value higher than 9.6V is normal, otherwise it is
too low. Due to di󰀨erent situations, whether the starting voltage is higher or
not does not mean the vehicles or batteries are faulty.
Generally, the voltage is lower than 11V for the bad cell battery, but it is
possible that the battery is completely exhausted or has a serious low
capacity. In this case, just recharge your battery. Bad cell always happens
when the loads on a stopping vehicle are turned on for a long time.
It has no inuence on test result in the event that engine’s output voltage
or engine revolution is not very stable. No matter whether the vehicle is
accelerated or not, the output voltage only di󰀨ers within 0.2V.
Pay more attention to connect the clip. The battery poles connect with
conductor, which makes the clip has a poor connection when testing
battery. A tolerance of dozens of CCA occurs if the clip is out of position,
or oil, dust attaches on the pole. The gear and main body of clip should be