Auto Test BST-380, User Manual, Page: 3 / 28

1.1 Product Profile
The AutoTest BST-380 Battery System Tester uses advanced conductance testing
technology to easily, quickly and accurately measure the actual cold cranking amps
capability of the vehicle starting battery, the health of the battery itself, and common
faults in the vehicle starting system and charging system. It can help maintenance
personnel to identify problems quickly and accurately, thus leading to efficient vehicle
repair.
1. Can test all automotive cranking lead acid batteries, including ordinary lead acid,
AGM flat plate, AGM spiral, Gel battery, EFB battery and more.
2. Directly detect bad cells.
3. Polarity reverse connection protection, reverse connection will not damage the
tester or affect the vehicle and battery.
4. Test batteries for loss of electricity, no need to fully charge before testing.
5. Testing standards include a majority of the world’s battery standards, CCa, BCi,
Ca, mCa, JiS, Din, ieC, en, Sae and GB.
6. Supports multiple languages, the user can select different language packages
including: English, Chinese Simple, Chinese Traditional, Japanese, Russian,
Spanish, French, Italian, German etc. Other languages can also be customized
according to user’s requirements.
7. Has common additional functions such as a voltmeter, ammeter, thermometer, and
standby power for eCu.
8. Stores 100 groups of test data for check and print.
1.2 Product Function
The main functions of the AutoTest BST-380 Battery System Tester include: battery
testing, cranking tests, charging tests and other additional functions.
The battery test is usually used to analyze the battery health status, to calculate the
actual cold cranking capability of the battery and the aging extent, which provides
reliable analysis evidence for the test and maintenance of the battery. It notifies the user
to replace the battery in advance when the battery is getting old.
The cranking test is mainly used to test and analyze the starter motor. Through testing
the actual required cranking current and cranking voltage of the starter motor, it can
find out whether the starter motor is operating correctly. There are several reasons
why the starter motor might not operate as required: lubricating system faults causing
the starting loaded torque to increase or rotor friction of the starter motor resulting in
increasing friction within the unit itself.
Charging tests check and analyze the charging system, including the generator,
rectifier, rectifier diode etc. These tests determine if the output voltage of the generator
is normal, the rectifier diode works correctly and if the charging current is normal. If one
of the above mentioned parts is not operating normally, it can lead to an over-charge, or
incomplete charging of the battery, thus the battery can be quickly damaged and also
greatly shortened in life-span.
Chapter 1: Product Summary