[wg0]

Someone commented on some forum:

"People buying a car with a lifespan of their smartphone batteries is beyond me."

[rogerrogerr]

This isn’t even close to true, fwiw. You can easily find stats on EV batteries. There are early Teslas out there with 200k+ miles after 10+ years with minimal degradation.

[wg0]

Those are outliers. It's like saying there are people who live upto 106 years easily.

These batteries are subject to extreme temperatures routinely including fast charge/discharge cycles and we simply can't escape the physics with our wishful thinking alone.

[moooo99]

We can’t escape physics, but we can address physics. Car batteries are usually temperature controlled, they are cooled when fast charging etc.

Especially with modern battery tech, you should easily get 200,000km out of the battery before it drops to below 80% of its original capacity

[wg0]

How are they exactly temperature controlled? To control temperature, we would need to circulate something around the cells and that something has to be heated or cooled whereas every tear down I have ever seen of EV batteries contains nothing as such.

Not to mention that such heating/cooling would additionally draw energy thus taking a toll on both the range and battery life.

[rogerrogerr]

Tesla has liquid cooling around the cells, a fairly advanced system that can move heat between battery, motors, cabin, and environment in arbitrary directions.

Before just claiming no EVs do this, you could have typed “Tesla battery cooling” into Google and gotten this from the AI thing:

> Tesla vehicles have a built-in battery cooling system that uses an electric pump to circulate coolant and keep the battery's temperature within an optimal range. This helps the battery perform well and last a long time.

Here’s the battery cooling system theory-of-operation from Tesla, for their _first_ car almost two decades ago: https://service.tesla.com/docs/Public/Roadster/TheoryOp/1.2....

Here’s someone tearing down a Chevy Bolt battery talking about the coolant system: https://insideevs.com/news/341527/weberauto-examines-the-che...

Here’s an F150 Lightning battery apparently leaking coolant: https://www.lightningowners.com/threads/rear-motor-area-leak...

Please, do a bit more research before spreading damaging falsehoods about EVs.

[wg0]

If you read my comment, you wouldn't find any claim or falsehoods being spread rather a question.

With the conclusion that such cooling/heating wouldn't be free lunch and would take it's toll on the battery itself reducing both range and requiring more charge cycles because all those compressors need power too.

[vel0city]

> whereas every tear down I have ever seen of EV batteries contains nothing as such.

You're massively misinformed. Practically all EVs have active liquid cooling through their batteries and have for quite some time. You should actually research them instead of being so confidently wrong.

[rogerrogerr]

For actively cooled car batteries, they’re not outliers. At this point, the onus is on you to show the generally accepted data about EV battery lives are wrong.

You aren’t going to be able to find legit data that says EV batteries regularly fail around the 3-5 year mark, like phone batteries.

[joenot443]

Hmm, that'd be a funny comment if it were close to realistic, but unfortunately it's not. No upboat from me, I'm afraid.