2 Operating Instruction
2.1 Battery Test
2.1.1 Before Testing
Clean battery poles with metal wire brush and alkaline cleaner to avoid the tolerance caused by oil and dust to
the test result.
For Group31 or side-installed battery, connect and fix the terminal wiring connector. Otherwise, inaccurate test
result will be caused due to wrong installation or dirty or bad wiring connectors.
While testing, ensure none of the in-vehicle electrical appliance is on, doors are closed and the ignition key is
in OFF status.
Connect the red test clamp with battery anode and the black test clamp with cathode.
2.1.2 Check Connection
Shake the clamps back and forth to make sure they are well connected. Tester requires the two clamps are well
connected with the battery poles; otherwise, the test cannot go on. When enter the battery test program, screen
prompts "Check Connection" (See below picture).
Do clean the poles and re-connect in the right way.
2.1.3 Reverse Connection
Tester has reverse connection protection function. When clamps are reversely connected, tester will prompt
"Reverse Connection" (See
below
picture), but it damages neither the tester nor the automotive load.
NOTE:
For parallel connected batteries, break off the cathode connection first, then do single test to each
battery. Suppose cathode connection is not cut off, there will be error in test result.
2. 1.4 Tester Startup
BST300
－
Connecting the test clamp with the battery.
2.1.5 Hidden Function
BST300: Press DOWN key to choose DISPLAY Resistance or Rated CCA.
2.1.6 IN-VEHICLE or OUT-OF-VEHICLE
After starting up, the battery will prompt to select batter location. Press UP/DOWN key to select in-vehicle or
out-of-vehicle, then press OK key to confirm.
When surface charge detected by the tester, it prompts "SURFACE CHARGE, TURN LIGHTS ON".
Turn lights on as prompted to eliminate battery surface charge, tester will then display the following messages
as below images.
Now the tester detects the surface charge has been eliminated, turn lights off as prompted, then press OK key.
The tester will recover automatic test.
CKECK
CONNECTION
REERSE
CONNECTION
SURFACE CHARGE
DETECTED
TURN LIGHTS ON
HEADLIGHTS ON
TURN LIGHTS OFF
4