12V Battery Lifespan on a 2021 Taycan RWD

[scott567]

The 12V battery in my 2021 Taycan RWD is now about 3.5 years old. How long do these batteries typically last, and at what point would it be advisable to replace it?

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[SergeyIndy]

My view is 10 years minimum with capacity measured at service check points. There is nothing in the manual/journal that states a replacement for miles/years. I have not heard of anyone replacing one unless you kill it on your own by letting it go down too low as it locks up and must be replaced.

Old style chemical battery, for example, in our 2016 Macan had 50% capacity after 8 years and was recommended to be replaced at $2k retail cost for parts and labor.

 

[Tooney]

Old style chemical battery, for example, in our 2016 Macan had 50% capacity after 8 years and was recommended to be replaced at $2k retail cost for parts and labor.

What a bargain!

 

[fsolis]

12V batteries in Taycans should typically last well over 10 years. I have a 2020 Porsche Taycan 4S, and mine was recently replaced under warranty along with some other electronic components. I probably ended up with a faulty unit, because 6 years is only about half of the expected lifespan.

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