The CGDI BD006 Car Battery Tester uses conductance testing technology to quickly measure a starting battery’s cold-cranking capability and state of health (SOH). This manual covers four main functions: Battery Test, Cranking Test, Charging Test, and Voltage Acquisition.
Battery Test
The CGDI BD006 Battery Test function is for 12V lead-acid batteries.
- Before Testing
Before testing in the vehicle:
- Turn off all accessory loads.
- Remove the key from the ignition.
- Close the doors.
- If the vehicle was running, turn on the headlights to discharge the battery’s surface charge.
- Let the battery rest for at least 1 minute before testing.
- Test Procedure
- Select BATTERY and press [Enter].
- Select the battery type and press [Enter]. Check the battery label for the type.
- Select the battery standard and press [Enter]. Check the battery label for the standard.
- Enter the CCA with the ▲/▼ keys, then press [Enter] to start the test.
- Short-press ▲/▼ to change the value by 5.
- Press and hold ▲/▼ to change the value continuously.
The test result appears on the display.


- Battery Test Results
ResultMeaningGood BatteryBattery condition is good.Good ChargingBattery condition is good. Charge the battery.ReplaceReplace the battery.Retest After ChargingCharge the battery and test again.
- Battery Test Terminology
TermDescriptionHealth (SOH)Battery condition compared with a new battery, considering cell aging.Charge (SOC)Remaining battery charge compared with its maximum available charge.Internal R (Internal Resistance)Resistance to current flow in the cells and battery. It is affected by electronic and ionic resistance.RatedThe CCA entered in the previous step, based on the CCA shown on the battery label. The difference between rated and actual CCA affects the test result.
Cranking Test
The Cranking Test supports 12V and 24V lead-acid batteries.
- Before Testing
Turn off the engine and all accessory loads before testing.
- Test Procedure
- Select CRANK and press [Enter].
- Follow the on-screen prompt and crank the engine.
- The result appears on the screen, including cranking time and cranking voltage.
- Cranking Test Results
Cranking Time: Time required to start the engine.
Cranking Voltage: Battery voltage while the engine is starting.
The result is typically:
Cranking Low • Normal • Good
Charging Test
The Charging Test supports 12V and 24V lead-acid batteries.
- Before Testing
Start the engine before performing the charging test.
- Test Procedure
- Select CHARGE from the home screen and press [Enter].
- Confirm that the engine is running and press [Enter].
- The tester performs a ripple test. The result appears as a graph. After 10 seconds, it moves to the next step.
- Turn off loads such as the headlights and blower motor. Press [Enter].
- Increase the engine speed to 2500 RPM. Press [Enter].
- Release the throttle. Press [Enter].
- The charging test result appears on the display.
- Charging Test Results
The result is typically:
No Output
Charging Low
Charging Normal
Charging High

Voltage Acquisition
The Voltage Acquisition function displays the vehicle’s voltage information.
- Test Procedure
From the main menu, press V to start the function.
The display shows:
Current voltage
Maximum and minimum voltage
Voltage trend curve
Select Exit to return to the main menu.
















