Jeep BBAH7700AA Battery-Storage

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Look at the indicator eye on the top of the battery (if equipped). A green indicator eye means the battery is 75 to 100 percent charged, black indicates 0 to 75 percent charged, and clear or bright indicates low electrolyte level. Maintenance-free batteries with clear indicator eyes should be replaced, while low-maintenance batteries with removable cell caps can have distilled water added to the correct level. Perform an open-voltage circuit test using a voltmeter to check the battery voltage, ensuring the surface charge is removed for accurate measurement. A fully charged battery should have at least 12.4 volts. Charge the battery if the voltage is lower. Perform a battery load test with a battery load tester to assess the battery's ability to handle heavy amperage draw. A fully functional battery should not drop below 9.6 volts during the test.