New EV worries

[AKrietzer]

As a new - first time -;(not yet- ) EV owner what do I need to know about batteries?
I am currently having to replace a 4 or so year old battery in a 2011 Hyundai Sonata, on it:s second battery, less than 4 years on this battery. My 2012 Tundra is on battery #2, my 2003 Tundra lasted over 10 years. How long should I expect my main (not 12 volt) EV batteries to last? I know EVs generally have an 80,000 mile warranty.

 

[Chapman]

Your battery should last 10 years and 200,000 miles. You may or may not still be under warranty by the time it happens. Regardless, you may be able to replace/repair some of the cells instead of the whole battery to get many more years out of it. Also, battery technology is getting better every year, so you may be able to get a much better battery (higher range and lower weight) by the time your battery goes. The costs for the battery itself should be quite a bit lower as battery technology matures and they are manufactured in larger volumes. Plus, more shops will be able to do the work and they will be more familiar with it, reducing the labor time needed to make the swap. I wouldn't worry about the battery at all - especially since it's from a reputable supplier, SK On, who also does the batteries for Ford).

 

[AZFox]

The federally mandated minimum warranty is eight years or 100,000 miles.

There are a lot of factors that influence long-term battery health. Put another way, you can make your battery last by using it properly and you can degrade your battery by using it improperly.

There are tons of articles on this topic. Here's one that seems pretty comprehensive:
Battery Car Lifespan: How Long EV Batteries Really Last in 2025