kia optima battery change 2011-2017

2011-18 Kia Optima Battery Replacement

Updated Friday May 18, 2018

Instruction on how to change the battery on Kia Optima. Years 2011, 2012, 2013, 2014, 2015, 2016, 2017. Replacing the battery in your Kia is an easy task and can be completed in less than 15 minutes. You will need a few basic tools such as:

  • 10mm, 12mm sockets,
  • 3/8 extension
  • ratchet wrench
  • battery terminal cleaner.  

The third generation Kia Optima uses Group Size H7 AGM battery. The cold cranking amps in your replacement battery should have a min rating of 800 CCA.

Kia Optima 2011-2016 Battery Replacement Instructions


Step 1: Set parking brakes and turn off ignition

Move the gear shifter into Park, turn off ignition and set the parking brakes.  

Kia Optima: Removal and Installation - Battery. Repair procedures

Step 2: Open the hood

Kia Sorento 12V Automotive Battery Replacement GuideOpen the hood. Locate the battery towards the front in the engine bay, driver's side.  


Step 3: Remove intake air duct

battery replacement diy instruction Kia Soul Fort Rio Sportage Sedona SoulOn certain Kia models such as the Optima, the air assembly goes on top of the battery. This will need to be removed. Other Kia models such as Rio and Sedona may not have this cover. There are two screws that hold this cover in place that will need to be removed. Some models use plastic fasteners while others use 10 mm bolt to hold the air intake in place. Once the screws are removed lift the air intake assembly as shown in the video clip below. 

Step 4: Disconnect negative and positive battery termnial

Disconnect the negative battery cable. First, remove the negative cable.Optima Batteries - Best Battery for KiaNear the negative battery post you will notice a minus symbol or negative symbol stamped on the battery. Once you loosen the bolt on the clamp the cable can be removed from the post. If the clamp does not come off easily, try twisting the clamp as you pull it away from the terminal. The next step is to disconnect the positive cable. The positive terminal will either have a plus sign near the post or the word positive printed. You can easily distinguish the positive battery post by the red plastic cover or the red cable.

Step 5: Remove 12mm bolt and bracket

Video guide on how to change battery for KIARemove the 12 mm bolt on the side of the battery. It can be tricky to get to this bolt so use an extension to get to it. 

Step 6: Install new battery

Battery Replacement: 2011-2016 Kia OptimaNow it is time to remove the old battery. Use both hands to lift up the old battery as car batteries are very heavy. Batteries may have a handle to help you with the removal. Carefully lift the old battery out of the battery tray and set it down on the ground. Once the old battery is removed, carefully install the new battery. Reinstall the battery bracket. Make sure that the battery does not move. Try to move the battery back and forth to ensure that the battery is secure.

Before you reconnect the cables, clean the terminals using the battery post brush tool.  Next, connect the positive cable and fasten the terminal bolt. Connect the negative battery terminal and tighten the bolt last. Start the car. Monitor lights on your instrument cluster. Confirm that there are no warning lights illuminated work and electronic controls work. Turn on the radio to confirm that it works, and if not, re-enter the security code that should be included in the documentation that came with the car.

If you have any warning lights on such as ABS or Electronic Stabil Stability Control (ESC) drive your Kia for a couple of minutes. Make sure to turn the steering wheel all the way to the left then all the way to the right. Engine needs to be running and the car has to be in Park. 

Dielectric Grease

To protect the battery from corrosion and provide a secure electrical connection you can use dielectric grease on the battery posts. Dielectric grease can also improve the connection between the clamp and post. Permatex Dielectric Grease is a popular product and is also highly rated on Amazon.

Important notes:

  1. We recommend that you wear eye protection when replacing the battery on your Kia. 
  2. Never smoke or light fire while working near your Kia Optima battery. 
  3. Replace the battery in your Kia with a replacement that has the same: size, ratings, and cranking amps.

Tightening Torques

  • Positive Battery Terminal Bolt: 10 Nm ( 7.4 lb-ft)
  • Negative Battery Terminal Bolt: 6 Nm (4.4 lb-ft)
  • Mounting bracket bolt: 12 Nm (8.8 lb-ft)