Owners of other Jeep, Dodge and RAM vehicles such as the Grand Cherokee, Wrangler, Renegade, Gladiator, Cherokee, Grand Wagoneer, Wagoneer, Charger, Challenger, Durango, RAM 1500, Promaster, 2500 and 3500 may also find these DIY instructions to be helpful.

The OEM battery's part number is 56029775AA (or 56029 775 AA) AGM and the "Group Size" is H6 (also known as "48").

(You could also use a slightly smaller group size H5 / 47.)

A few compatible replacement H6 / 48 or H5 / 47 AGM (absorbed glass mat) batteries with their part numbers are as follows: Bosch S6585B, Deka 9A48, Delphi BU9047, ACDelco Gold 47AGMA and Deka 9A47.

The tools needed to complete this procedure include the following: a 10mm socket, a deep well 13mm socket, an 8mm socket, a 1/4" drive ratchet, a 3/8" drive ratchet, a set of extension bars and a Phillips head screwdriver.

The first two steps are to open the hood and move to the right (driver) side of the engine bay.

First, loosen the nut on the "-" negative (black cable) terminal at the front of the engine bay by turning it a few turns in the counterclockwise direction with a 10mm socket and a 1/4" drive ratchet.

Wrap the terminal in a small towel and tuck it away on the right side of the battery to help prevent accidental electrical contact.

Pull the red plastic cover off the top of the positive terminal and the power distribution board.

Remove the 10mm nut on the left side of the power distribution panel by turning it in the counterclockwise direction.

Pull the two thick red cables off the left side of the power distribution board.

Set the 13mm nut aside in a safe place.

Pull off the two medium sized black cables off the board.

Set the three 8mm nuts aside in a safe place.

It probably doesn't matter if you mix them up, but why take the chance of causing a problem.

At this point you should have removed one 10mm nut, one 13mm nut and three 8mm nuts.

You don't have to remove the terminal nut. Just loosen it a few turns.

Pull the A B C wires off the rear edge of the board.

Remove the two screws by turning them in the counterclockwise direction with a Philips head screwdriver.

Carefully pull the positive terminal and power distribution board off the "+" battery post.

Locate the black metal bracket on the left side of the battery that is attached to the hold down strap.

I like to use a piece of painter's tape of electrical tape to keep the socket securely attached to the extension bar.

Loosen the nut by turning it in the counterclockwise direction.

Lift the metal bracket off the battery tray and set the hold down strap on the right side of the old battery.

At this point, you should have removed 6 nuts and 2 screws.

Gently set the old battery down on the ground. Try to avoid tipping over or dropping the old battery to prevent from having acid leak out.

Remove the felt fabric heat shield from the old battery.

Clean off any debris from the plastic tray so that the new battery will rest evenly on it.

The negative post should be at the front and the positive post should be closer to the rear of the engine bay near the cowl and windshield.

Lower the power distribution board and positive terminal over the "+" battery post.

Spin the 13mm nut on to the threaded bar on the left side of the battery tray.

Spin on the 13mm nut in the clockwise direction.

Tighten the 10mm positive terminal nut in the clockwise direction.

Spin on the 10mm nut to secure the two large red cables.

Tighten the 8mm nuts for the A B C wires.

Push the red plastic cover down into place.

Tighten the terminal nut in the clockwise direction until it is snug.

Try to avoid over tightening the terminal nut to prevent from cracking the battery post which could result in an acid leak.

To test the new battery, start the engine.

If you have a digital multimeter, the new battery should have a voltage of just over 12 volts when the engine is off and any where from 13 to about 14.4 volts when the engine is running. If the alternator is not charging the new battery at a range of 13 to 14 volts, it may need to be replaced.

Please check out all of my 2017-2022 Jeep Compass DIY Repair & Maintenance Guides.