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Using the ED-18 Battery Tester

IMPORTANT: Before testing the battery and/or charging system, please view the following TSB regarding use of the ED-18™ Battery Tester. See SERVICE MANUAL UPDATE: ALTERNATOR TESTING .
NOTE: For set up, customization, and other available features, refer to the ED-18 user's manual.
  1. Connect the leads to the positive and negative terminal of the battery.
  2. Use the arrow keys to select the battery test, then press enter, then follow the prompts.
    NOTE:
    • Make sure to enter the correct cold cranking ampere (CCA) rating of the battery. You can find the CCA printed on the label on the top of the battery. If the CCA rating is not entered correctly, the test result will not be accurate.
    • Make sure you select FLOODED for the battery type.
  3. Here are the four possible battery conditions:
    • Good Battery: The battery has at least 60 percent of its charge and requires no action.
    • GR8 Diagnostic Needed: The battery voltage is below 60 percent of its state-of-charge, and the condition of the battery is unknown. Use the GR8 to charge the battery and properly diagnose it.
    • Replace Battery: The battery condition is poor. Replace it.
    • Bad Cell: There is a problem with the battery. Replace it.