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Hyundai Accent 12V Car Battery Replacement Guide
How to change a dead 12 volt automotive battery in the engine bay of a 4th generation 2011-2015 Hyundai Accent.

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2013 Accent 12V Battery
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Loosen 10mm Terminal Nut
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Pull Off Negative "-" Terminal

This automotive maintenance tutorial was specifically written to assist owners of the fourth generation (2011, 2012, 2013, 2014 & 2015) Hyundai Accent in removing a dead 12V automotive battery from the engine bay and installing a new one.

Owners of other Hyundai or Kia vehicles such as the Tucson, Elantra, Sonata, Azera, Veloster, Tiburon, Genesis, Lavita, Veracruz, Santa Fe, ix20, i20, ix35, Fluidic Verna, Equus, Cadenza, Forte, Optima, Rio, Soul, Sedona, Sorento, Spectra and Sportage may also find these DIY instructions to be helpful.

A few compatible replacement "Group Size" 121 or 121R batteries with their part numbers are as follows: EverStart MAXX-121R, AutoCraft Gold 121R-1, Super Start # 121R72, Napa Legend BAT 75121R, and Carquest 121R-70.

The tools needed to replace the battery include a 10mm socket with a 1/4" drive ratcheting wrench, a 12mm socket with a long 6" to 9" extension bar and a 3/8" drive ratcheting wrench.

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Cover With Towel & Tuck
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Plastic "+" Terminal Cover
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Flip Open Cover
The first two steps are to open the hood and then move to the right (driver) side of the engine bay.

The 12 volt car battery is located right behind the air box and to the left of the fuse panel.

For extra safety, I'd recommend wearing gloves during this procedure.

First loosen the nut on the "-" negative terminal by turning it counterclockwise with the 10mm socket and 1/4" drive ratcheting wrench.

Then carefully pull the negative terminal off the battery post.

Wrap the terminal with a small rag or towel and tuck it away on the side of the battery to prevent accidental contact.

Flip open the plastic cover on the top of the "+" positive terminal (red cross).

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Loosen 10mm Nut
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Pull Off Positive Terminal
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Tuck Terminal On Side
Then loosen the 10mm nut on the positive terminal by turning it in the counterclockwise direction.

Pull the positive terminal off the battery post, close the plastic cover and tuck it away on the side of the battery.

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Pull Out Battery Cover
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Battery Cover Removed
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12mm Battery Clamp Bolt
Pull the heat shield box off the old battery and set it aside in a safe place.

The battery is held in place to the tray by a clamp on the front edge with a single 12mm bolt.

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6" & 3" Extension Bars
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Loosen 12mm Clamp Bolt
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Lift Out Old 12V Battery
Attach an extension bar or two to your ratcheting wrench with a 12mm socket.

Loosen the 12mm battery clamp bolt by turning it counterclockwise a few turns.

You do not need to entirely remove the bolt and it may be easier to leave it attached.

Raise the handle on the OEM battery and lift it out of the engine bay.



 

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Part # CMF45L-DIN
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Rocket - Group Size 121
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Clean Off Battery Tray
The OEM battery in this 2013 Hyundai Accent was a Rocket brand battery part number CMF45L-DIN.

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

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Lower In New Battery
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Replace Battery Box
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Tighten 12mm Bolt Clockwise
Carefully lower the new 12V battery on to the tray with the "+" positive terminal on the left (passenger) side and the "-" negative terminal on the right (driver) side of the engine bay.

Make sure that the hold down clamp is over the front lower edge of the battery.

Tighten the 12mm battery hold down clamp bolt by turning it in the clockwise direction until it is snug.

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Push On Positive Terminal
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Tighten 10mm Nut
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Close Terminal Cover
First push the "+" terminal on to the positive battery post.

Tighten the 10mm nut by turning it in the clockwise direction.

Try to avoid over tightening the terminal nut to prevent from damaging the battery post.

Flip the plastic cover closed over the positive terminal.

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Push On Negative Terminal
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Tighten 10mm Clockwise
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12 Volt Battery Changed
Then carefully push the "-" terminal on to the negative battery post.

Tighten the 10mm nut by turning it in the clockwise direction until it is snug.

Test the new 12 volt car battery by starting the engine. Be sure to set your radio station presets and adjust the time on the clock before driving.

For more, check out my other Hyundai Accent DIY Repair & Maintenance Guides.
 

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