Product Manual

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Clamps are connected to the proper terminal posts. Make certain a clean connection has
been made between the Clamps and terminal posts.
3. Push and release the Test Start button(C), a solid and consistent measurement is
indicated by the Battery Tester. Within five seconds, read the LED Window display. 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.
Additional Operation Information
Analyzing test results by color display: The Battery Tester will measure battery
output/charge in two ways. The three lights above the LED Window (D ) will indicate a
color telling you the general condition of the battery.
4. If the battery is without significant charge, charge it and check it again under load.
The battery should measure 75% of Open-Circuit Voltage. 75% can be considered fully
charged. If the charging rate reaches at least 75%, but fails to reach 75% during the load
test, it needs replacing. Refer to the table below for 12 Volt battery percentages:
5. When test is complete, remove Black Clamp (-) from battery first; then remove
Red Clamp (+).
Testing the Charging System-Alternator/ Regulator Output:
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. Without using the Test Start Button. 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.
Red = Bad, No Charge, or Completely Discharged
Yellow = Weak, Needs Recharging
Green = Good or Normal – Has Existing Charge
Open Circuit Voltage (V): Less than 11.7V 12V 12.2V 12.4V 12.4V +
Battery Charge Percentage 0% 20% 50% 75% 100%