System Test - Launch BST-460 User Manual

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BST-460 Battery System Tester User Manual
problems are detected.
2) Charging Volt: Low
Charging volt of the charging system is low.
Check whether slip or running off occurs on the generator drive belt.
Check the connection between generator and battery is normal or not.
If both of the drive belt and the connection are in good condition,
follow the manufacturer's suggestion to eliminate generator fault.
3) Charging Volt: High
Generator out put volt is high.
Since most of the vehicle generators are using built-in regulator, the
generator assembly has to be replaced. (For some old style cars using
external regulator, directly replace the regulator.)
The normal high volt of the voltage regulato r is maximum 14.7±0.5V.If
charging volt is too high, it will overcharge the battery. Therefore, the
battery life will be shortened and troubles will be caused.
4) No Volt Output:
No generator volt output is detected. Check whether the generator
connecting cable, the drive belt of generator and engine are normal or
not.
5) Diode Test:
Through the test of charging current ripple, the tester will find out
whether the diode works properly or not. W hen ripple volt is too high,
it indicates at least one diode is damaged. Check and replace the
diode.
Till now, all tests have been done.
3.6 24V System Test
Ordinary 24V battery group combines two 12V batteries in series
connection. Therefore, when testing 24V battery, the tester will
prompt "24V Battery", divide the batteries and test one by one. It's not
necessary to break off the connecti ng cable (Comparatively, the
parallel connected battery group must cut off the cathode connection),
test method is same as testing single 12V battery.
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