Jeep BA00L4800W Battery-Storage

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Loosen the left-front wheel lug nuts, then raise the front of the vehicle and support it on jackstands. Remove the left-front wheel and inner fender splash shield. Also remove the engine under cover. Remove the fuse box assembly mounting bolts and position it to the side. Remove the Powertrain Control Module (PCM) mounting bolts, then position it to the side. If necessary, also remove the PCM mount for better access. Detach any wiring harness clips from the battery tray, then remove the battery tray mounting bolts - accessed by working from the engine compartment, fenderwell, and from below the vehicle. Remove the battery tray, rotating it as necessary. Installation is the reverse of removal.

The battery tray should be checked for good condition, and the hold-down clamp fasteners should be secure. For more comprehensive checks, consult the Haynes Automotive Electrical Manual.

The battery is mounted behind the lower front portion of the left front fender, and the remote positive and negative terminals are located in the engine compartment at the left strut tower.

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

You can determine the state of charge of the battery by measuring the specific gravity with a hydrometer or checking the built-in hydrometer (if applicable), or by using a digital voltmeter to check the charge. A fully charged battery should read 12.6 volts or higher.

Make sure you get one that's identical, with the same dimensions, amperage rating, cold cranking rating, etc.

Ensure the battery carrier is in good condition and securely tightened.