User's Manual
21
LAUNCH Battery 5001 User Manual
Fig. 5-12
5.1.6 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 dierent 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 inuence 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 diers 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 fully matched
with battery poles.
• Battery poles inside the vehicle are enveloped by connectors, which may
produce some errors for test results. The tolerance results from the resistance
of connectors. The greater the resistance value is, the greater the tolerance
becomes. But generally, the tolerance does not aect the test conclusion.