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Inspecting the Battery
Before starting the test visually inspect the battery for:
Cracked, buckled, or leaking case. If you see any of these defects, replace the battery.
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Corroded, loose, or damaged cables and connections. Repair or replace them as needed.
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Corrosion on the battery terminals, and dirt or acid on the case top. Clean the case and termi-
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nals using a wire brush and a mixture of water and baking soda.
Low electrolyte level. If the electrolyte level is too low, add distilled water to fill up to ½ above
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the top of the plates and fully charge the battery. Do not overfill.
Corroded or loose battery tray and hold-down fixture. Tighten or replace as needed.
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Testing Out-of-Vehicle (Battery Test)
The preferred battery test location is in the vehicle. However, if you plan to test out of the vehicle:
Always disconnect the negative cable from the battery first and reconnect it last.
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Always use a carry tool or strap to lift and transport the battery.
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Failure to properly install lead terminal
adapters, or using adapters that are dirty or
worn, may cause false test results.
When testing side-post or Group 31 batteries, always use lead terminal adapters
provided with the tester—do not test at the battery's steel bolts. To avoid damage,
never use a wrench to tighten the adapters more than ¼ turn.
Testing In-Vehicle (System Test)
Before starting the test, inspect the alternator drive belt. A belt that is glazed or worn, or lacks the
proper tension, will prevent the engine from achieVIDg the rpm levels needed for the test.
The preferred test position is at the battery posts. If you must test at a remote-post location, it
should have both a positive and negative post. Otherwise, you must remove the battery and
perform a System Test.
At the start of the test, place the vehicle transmission in PARK, make sure all vehicle accessory loads
are off, the key is not in the ignition, and the doors are closed.
Connecting To The Battery
Connect the red clamp to the positive (+) terminal and the black clamp to the negative (–) terminal.
If you connect the clamps in the wrong polarity (red to negative or black to positive), the analyzer
displays "CLAMPS REVERSED!" Reconnect the clamps.
To make sure both sides of the clamps are gripping the terminals, rock the each clamp back and
forth. A poor connection will prevent testing, and the analyzer displays the message CHECK
CONNECTION. If the message reappears after you have correctly reconnected the clamps, clean the
terminals and reconnect.
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Midtronics BV Hoofdveste 6-8 3992DG Houten
CPX-900 EU
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