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Tesla Model S battery degradation data

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Re: Tesla Model S battery degradation data

#71

Post by KGIII »

user5994461 wrote: post #59
kbenson wrote: post #8

> The red fitted line has a slope above 60.000 km (say 40,000 miles) of 1% per 50.000 km (30,000 miles). I'm going to bring this up because I think it's both interesting, and sometimes it comes up on its own and detracts from the conversation with conjecture (and sometimes harsh assumptions) until covered adequately[1] - different countries have different conventions for whether they use a comma or period for a thous…

It's not just about the thousands separator, the same character is used to separate the decimal part. It's better to use no punctuation at all if you want to internationalize.

When the period is used to separate thousands, the comma is used to separate decimals. Usually...

https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/ind...

Re: Tesla Model S battery degradation data

#72

Post by hwillis »

peterwwillis wrote: post #37

FYI: Tesla batteries are literally laptop batteries with cell balancing. No secret battery magic going on. You could in theory crack open the pack and replace inefficient cells to get your capacity back. But, I'm assuming this is too huge a PITA for most people.

Sharing a form factor does not mean those two things are the same. The only similarity between laptop batteries and tesla batteries is the can they come in, which is... not important.

Please don't open a Tesla battery, the bus is at 600 volts and will kill you stone dead, then start a fire

Re: Tesla Model S battery degradation data

#73

Post by microcolonel »

KGIII wrote: post #71
user5994461 wrote: post #59

Earlier quoted context omitted.

It's not just about the thousands separator, the same character is used to separate the decimal part. It's better to use no punctuation at all if you want to internationalize.

When the period is used to separate thousands, the comma is used to separate decimals. Usually... https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/ind...

Of course, that page is completely wrong about the large number convention in Canada. Anglo Canada (including government documents) uses the U.S. convention, and at very least uses period for the radix point. The shown convention only applies to Franco Canada, and maybe not even all of Franco Canada.

Re: Tesla Model S battery degradation data

#74

Post by sapienthomo »

majormajor wrote: post #65
sapienthomo wrote: post #55

Earlier quoted context omitted.

The "technology" involved here is #1 understating the raw capacity of the battery and #2 managing the charge/discharge levels and rates to maintain that capacity. This gives a good user experience and perception of longevity. Apple does the same thing with the iPhone and it makes the iPhone user experience noticeably better than comparable Android handsets where the charge controller just charges the battery as high…

> Apple does the same thing with the iPhone and it makes the iPhone user experience noticeably better than comparable Android handsets where the charge controller just charges the battery as high and as fast as it can. iPhone battery life and lifespan has been a much-hyped thing in certain circles for a while, so back when I got my first iPhone 5S, imagine my dismay to discover it was actually not noticeably differen…

What exact models are we comparing? HTC's current phones weigh more than the iPhone 6 and much more than the iPhone 5s. Note also that since Android follows the Windows/PC model, there exists hardware that does this correctly, and there exists hardware that does it incorrectly.

Re: Tesla Model S battery degradation data

#75

Post by hwillis »

TomMarius wrote: post #7

Average life of ICE vehicles can't be 266kkm, that's absurdly low. Most of people I know have bought vehicles with that mileage and used it for another 100kkm after that at some point in their life (think first/second car, second family car, etc.). It's important to know that especially in Central/Eastern Europe, you can never trust the car's odometer - even the cars I'm talking about had probably more than 350kkm wh…

>Average life of ICE vehicles can't be 266kkm, that's absurdly low.

It appears to be the consumer reports data.

[1]: http://www.nbcnews.com/id/12040753/ns/business-consumer_news...

Re: Tesla Model S battery degradation data

#76

Post by notlob »

sqeaky wrote: post #10
TomMarius wrote: post #7

Average life of ICE vehicles can't be 266kkm, that's absurdly low. Most of people I know have bought vehicles with that mileage and used it for another 100kkm after that at some point in their life (think first/second car, second family car, etc.). It's important to know that especially in Central/Eastern Europe, you can never trust the car's odometer - even the cars I'm talking about had probably more than 350kkm wh…

I have seen plenty of cars not make to 165_000 miles, those that do are often near the end of their life. Mine is beat and barely holding together and it is at 97_000 miles.

My 80s diesel Benz is barely broken in at 249k miles. It all depends on the car.

Ironically, more modern cars will probably not last as long! I can rebuild just about anything on this car, electronics included (most complicated part is perhaps a common opamp). On modern cars, as soon as the advanced ICs (say an ECU) are NLA you’re SOL.

Re: Tesla Model S battery degradation data

#78

Post by jcranberry »

dyeje wrote: post #62
sqeaky wrote: post #10

Earlier quoted context omitted.

I have seen plenty of cars not make to 165_000 miles, those that do are often near the end of their life. Mine is beat and barely holding together and it is at 97_000 miles.

I had a 98 Jeep Sport Cherokee at 170k miles. One time I ran into a guy with the same car at a Walgreens (same model, same color, same year), we said hi and laughed about it. His had recently hit 300k and was still going strong. Cars can last quite a long time with regular maintenance.

I had a friend in high school whose family's Jeep just hit a million miles and was still chugging. Well, that's what Jeeps are for.

Re: Tesla Model S battery degradation data

#79

Post by KGIII »

microcolonel wrote: post #73
KGIII wrote: post #71

Earlier quoted context omitted.

When the period is used to separate thousands, the comma is used to separate decimals. Usually... https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/ind...

Of course, that page is completely wrong about the large number convention in Canada. Anglo Canada (including government documents) uses the U.S. convention, and at very least uses period for the radix point. The shown convention only applies to Franco Canada, and maybe not even all of Franco Canada.

I see both in Quebec, so it isn't universal - even there. Meh, it's close enough to demonstrate. I prefer the US method, but that's just due to familiarity.

Re: Tesla Model S battery degradation data

#80

Post by mcguire »

sqeaky wrote: post #10
TomMarius wrote: post #7

Average life of ICE vehicles can't be 266kkm, that's absurdly low. Most of people I know have bought vehicles with that mileage and used it for another 100kkm after that at some point in their life (think first/second car, second family car, etc.). It's important to know that especially in Central/Eastern Europe, you can never trust the car's odometer - even the cars I'm talking about had probably more than 350kkm wh…

I have seen plenty of cars not make to 165_000 miles, those that do are often near the end of their life. Mine is beat and barely holding together and it is at 97_000 miles.

That was very true of cars in the US before 1990, say. Today's are much better.

I have a 2004 Corvette with about 140,000 miles. Stuff breaks, but it is a vette. My last F150 had about 160,000 miles when I, uh, wrecked it. Still looked and drove like new.

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