How to use Foxwell BT100 analyzer for a battery test

Foxwell BT100 12 Volt Automotive Battery Analyzer allows you to analyze the battery healthy status and view battery charging status. Here is a manual of how to use it to connect to the car and perform a battery test.


To connect theFoxwell BT100 tester:

1 Clean the battery posts or side terminals.

2 Connect the red clamp to the positive (+) terminal and the black clamp to the negative (-) terminal.

3 Rock the clamps back and forth to make sure the clamps are firmly connected.

4 When the tester is correctly connected, it boots up automatically and shows the voltage of the battery.


To start a battery test:

1 Press the ENTER button to start the test. BAT. LOCATION Menu will display.


2 Scroll with the UP or DOWN button to highlight OUT OF VEHICLE or IN VEHICLE from BATTERY LOCATION menu and press ENTER to select the battery location.

foxwell-bt100-battery-test-manual-23 Scroll with the UP or DOWN button to select the battery type from BATTERY TYPE menu and press ENTER to confirm.


4 Scroll with the UP or DOWN button to select the battery standard from BATTERY STANDARD menu and press ENTER to confirm. Not all rating systems are available for each application.


You may find the battery type and battery rating label on every battery.

Global Rating Systems

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5 Use UP or DOWN button to change measure range till you enter the correct range of your battery. Press ENTER to start the test.


If the battery belongs to CCA standard, just select the corresponding CCA standard value and press ENTER to start the testing.


6 The BAT. TEMPERATURE menu will display to make sure the battery test result more accurate. Scroll with the UP and DOWN button to select the right battery temperature to confirm.



7 View test results on the screen. Depending on battery status, one of the following test results may display.

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8 Press the ESC button to exit the test.

BT100 battery tester finished battery test.



The tester keeps the results of last test only. When you start a new test, the last results are overwritten.