Ioniq battery replacement question

[ErnieS]

I have a 2023 Ioniq 6 with the original 12 VDC battery installed. It's getting long in the tooth, and I don't want to get stranded somewhere when it dies. Is it prudent with these EVs to take the car to a battery shop and have the battery tested and replaced before it fails?

 

[bwilson4web]

Yes.

The “Murphy’s” 12V batteries last about one month beyond their warranty. My experience is 3-4 years and once you see any symptoms, replace. It is not that hard:

• WARNING - accidentally reverse polarity has “bricked” past Prius. It “cooks” the control circuits instantly. So follow the replacement steps VERY carefully.
• Excellent first DYI project!

Bob Wilson

 

[andyG59]

I have a 2023 Ioniq 6 with the original 12 VDC battery installed. It's getting long in the tooth, and I don't want to get stranded somewhere when it dies. Is it prudent with these EVs to take the car to a battery shop and have the battery tested and replaced before it fails?

We replace our 12V every 3-4 years.

 

[Steadfast]

Yes.

The “Murphy’s” 12V batteries last about one month beyond their warranty. My experience is 3-4 years and once you see any symptoms, replace. It is not that hard:

• WARNING - accidentally reverse polarity has “bricked” past Prius. It “cooks” the control circuits instantly. So follow the replacement steps VERY carefully.
• Excellent first DYI project!

Bob Wilson

I think mine lasted two months beyond the warranty. I would get it checked every month after two years and when you replace it, replace it with the largest one you can fit in there.

 

[James Millet]

I just replaced my Ioniq 6 42 month old OE FLA 12V battery with a Costco Interstate AGM H5 Group 47 battery. Battery access requires removal of the frunk front panel secured with six 10mm bolts. Total job took about 30 minutes. Also reinstalled my Quicklynk BM2 battery monitor.