5
4. Press the test button (C), the test procedure is shown on the display. The devise shows the
test result after about ten seconds.
Attention: Do not test more than three times in a five minute period. Allow one minute for cool
down between tests.
Note: If a battery does not have the charge expected, have a qualified technician check the
specific gravity. There may be an electrical drain or charging system trouble. If charging does
not raise the specific gravity, you may have a defective battery. Analyzing test results by color
display: The Battery Tester will measure battery output/ charge in two ways. The Condition
Indicator will indicate a color telling you the general condition of the battery.
Note
: If a battery does not have the charge expected, have a qualified technician check the
specific gravity. There may be an electrical drain or charging system trouble. If charging does
not raise the specific gravity, you may have a defective battery.
LED
Battery condition
Action
Battery voltage
Red
Bad
Battery is uncharged
and possibly damaged.
Charging &
Test again
smaller than 9.5 volts
Yellow
Weak
Battery is undercharged.
Charging
9.5 to 11.2 volts
Green
Good
Battery is fully charged.
No
greater than11.2 volts
5. If the battery is without significant charge, charge the battery according to the manufacturer
and make a new test. If the new test is without significant charge again, then the battery is
defective.
Testing the Charging System
Warning
: When testing a system in a car/truck, the vehicle must be on a flat, dry surface.
The transmission must be in park and the emergency brake engaged.
1. Connect the red (+) Clamp to the positive (+) terminal post on the battery. Connect the black
(-) Clamp to the negative (-) terminal post on the battery.
2. With the engine off, check the Battery Tester LED Window (D) to determine effectiveness of
charge.
3. If the Battery Tester does not register and no display is seen, double check that the Clamps
are connected to the proper terminal posts. Make certain a clean connection has been made
between the Clamps and terminal posts.
4. Start the engine and let it run. Without using the Test Start Button, observe the voltage
readout when the engine speed reaches between 1200 to 1500 RPM (normal idle speed).
Once you push the Test Start Button, then will into charging system mode and meantime the
Test Start Button is disabled.
5. Note meter reading with all electrical accessories off. One of three conditions will apply:
a) Voltage less than 13.5 volts indicates faulty alternator.
b) Voltage between 13.5 volts and 14.4 volts indicates charging system is good.
c) Voltage over 14.4 volts indicates faulty voltage regulator.
6. When charging system test is complete, remove Black Clamp (-) from battery first; then
remove Red Clamp (+).
