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About Your Battery and System Tester
The battery tester is designed to test only 12 Volt batteries and systems. The
tester is compatible with a wide range of battery types, including Conventional,
Maintenance Free, AGM, Gel Cell, Spiral Wound and Start-Stop batteries.
The tester can test these types of batteries against several battery capacity rating
systems. The tester has a recommended operating ambient temperature range of
32˚ F to 122˚ F.
Preparing Battery to Be Tested
1. Be sure area around battery is well ventilated while battery is being tested.
2. Clean battery terminals. Wire brush them if necessary. Be careful to keep
corrosion from coming in contact with eyes.
3. Inspect the battery for cracked or broken case or cover. If the battery is
damaged, do not use tester.
4. If the battery is not a sealed Maintenance Free battery, add distilled water in
each cell until battery acid reaches level specified by the manufacturer. This
helps purge excessive gas from cells. Be careful not to overfill.
5. Confirm that all vehicle accessories are turned OFF to ensure you do not cause
any arcing and that the tested battery has a nominal voltage of 12 Volts.
6. If it is necessary to remove battery from vehicle to test, always remove ground
terminal from battery first.
Battery Tester Operation
Battery Testing
1. Before you test a battery in a vehicle, turn off the ignition, all accessories and
loads. Close all the vehicle doors and the trunk lid.
2. Make sure the battery terminals are clean. See Preparing Battery to Be Tested.
3. Connect tester leads to the battery, clamping the red clamp to the vehicle
positive battery terminal first. Then, clamp the black clamp to the vehicle
negative battery terminal second.
Note: Whenever possible, connect directly to the terminals/posts of the battery.
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