Jeep 4850377 Battery-None

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Disconnect the negative battery cable and visually inspect the battery's state of charge using the indicator eye (if equipped). Charge the battery or add distilled water if needed. Use a hydrometer to check the specific gravity of the electrolyte in each cell. Perform an open circuit voltage test using a digital voltmeter, ensuring the battery voltage is above 12.5 volts. Use a battery load tester to evaluate the battery's ability to handle heavy amperage draw during startup and accessories operation. Cold temperatures may slightly affect the minimum voltage requirements. To test for battery drain, disconnect all accessories and check the current drain using a digital ammeter. Normal drain is around 100 milliamps or less, while excessive drain can cause battery discharge.

Start by removing the battery hold-down clamp. Unscrew the hold-down bolt and remove the clamp. Carefully lift out the heavy battery.

Connect the positive (+) battery cable first, then the negative (-) battery cable second.

If corrosion is present on the cables and terminals, clean them and apply petroleum jelly or grease to minimize future corrosion.