Tool it PBT 550 Manuel Utilisateur page 6

After the test finished, tester displays the effective charging volts, ripple test result and
charging test result.
Check the connection between generator and battery, then retest.
Charging Test Result:
1. Charging Volt: Normal. The generator output normal, no problem detected.
2. Charging Volt: Low. Check drive belt of the generator whether slip or running off.
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. Since most of the vehicle generators are using internal regulator,
the generator assembly has to be replaced.(Some old style cars are using external
regulator, then directly replace the regulator.) The normal high volt of the voltage
regulator 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 the generator
connection cable, the drive belt of generator and engine whether normal or not.
5. Diode Test: Through the test of charging current ripple, tester will find out whether
the diode is normal or not. When ripple volt is too high, it proves at least one diode is
damaged. Check and replace the diode.
PBT 550 battery conductance tester User Manual
Charging Test
Loaded
Unload
Ripple
CHARGING NORMAL
EN -
13.97V
14.23V
15mV
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