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Tesla Model S battery degradation data

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Re: Tesla Model S battery degradation data

#251

Post by taheca »

monitron wrote: post #166
heydonovan wrote: post #161

Earlier quoted context omitted.

How can we prevent a battery from fulling charging? We plug a car/phone in at night, and wake up to it 100% charged.

Tesla's cars have a charge limit you can set, after which the car simply stops. I believe they come by default at 90%. You're supposed to override it if you want to go on a long road trip. Would be cool if there was a similar feature available on phones. Maybe you could rig up something with Tasker or the like on an Android.

Interesting fact.. with the last software update they changed what was considered trip, and local pretty significantly. I wonder if that is aligned to a SW improvement in battery management?

Re: Tesla Model S battery degradation data

#252

Post by TomMarius »

jandrese wrote: post #246
TomMarius wrote: post #196

Earlier quoted context omitted.

That's interesting because I know a lot of people with European Fords (Mondeo, Focus), myself and my family included, that went well over 350k km. Are the American Fords so incredibly bad?

I think it's more that people who never maintain their vehicles don't expect them to last past 100k miles. If you follow the manufacturers suggested maintenance regime in the manual it will last much longer. Unfortunately, this means the used car market is also full of moderate mileage vehicles that require a ton of preventative maintenance as soon as you buy them, giving the used cars a bad name. If you buy a used C…

Not expecting a ~$30k vehicle to run after 100k miles seems absolutely crazy to me. It's a nice showing of how different (wealthier and not caring in this case) the USA are from Europe.

Re: Tesla Model S battery degradation data

#253

Post by moepstar »

hwillis wrote: post #249
moepstar wrote: post #178

Earlier quoted context omitted.

Add one or two zeroes at the end and i'd guess we'll be more in the ballpark..

what...? You're saying cars can drive 1.5 to 15 million miles on average ? They barely ever make a million miles[1]. [1]: https://www.autotrader.com/car-news/ive-been-using-a-950000-...

Well, after googling "ICE car" i can see my mistake :)

Being german, i immediately associated ICE with the train of Deutsche Bahn[1] which probably do around that mileage...

[1] https://en.wikipedia.org/wiki/Intercity-Express

Re: Tesla Model S battery degradation data

#254

Post by photojosh »

SAI_Peregrinus wrote: post #237
dx034 wrote: post #188

Earlier quoted context omitted.

The UK is more complicated than that. Most of the signs are in metric but some distances are in yards and heights are in feet. Petrol prices are in litres but consumption is in mpg, even though there's no indication on how many gallons you actually fill up. In stores, everything has to be metric because of EU regulation but packaging for liquids is often in pints (e.g. milk, beer) and then gets translated into litres…

Eh, not everything is consistent. Soda cans are 12 fluid ounces, but bottles are 18 ounces, or 1 or 2 liters. Hard liquor comes in 750ml bottles, but is served in 1.5 oz or 2 oz shots. Beer comes in 12, 16, or 24 oz cans or bottles, milk in gallons, quarts, and pints, etc. British pubs tend to serve beer in imperial pints (20 imperial fluid ounces or about 568ml) instead of US pints (16 US fluid ounces or about 473ml…

Oh yes... I design PCBs.

Re: Tesla Model S battery degradation data

#255

Post by kozak »

jacobush wrote: post #198
bri3d wrote: post #110

Earlier quoted context omitted.

Laptops charge fully, discharge fully, get hot, and spend most of their time fully charged. This is the worst possible combination for Lithium-Cobalt/polymer batteries. Tesla batteries are never fully charged or discharged, are often charged at a lower C rate, and are thermally managed. A laptop with a cooled battery that only charged from 15-90% and took 3 hours to charge would hold up quite well, but it would weigh…

Now you made me want to build a luggable computer, maybe with wheels like the large carry-on-baggage with a ton of well-managed batteries in it!

A portable and clean replacement for a small gasoline/diesel generator in luggage form would be nice. So your idea is not too unrealistic.

Re: Tesla Model S battery degradation data

#256

Post by kozak »

elihu wrote: post #147
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…

It will be interesting to see what the useful lifetime of electric vehicles will be. In theory, they should last a lot longer because they have fewer mechanical parts. So, maybe the older ones will keep running fine but upper-middle-class people won't want to drive them because they look worn and shabby. Which is sort of what happens with gas cars now, but to a greater degree. Maybe 30, 40, and 50 year old cars will…

Or maybe they will go to the junkyard despite being perfectly fine because no one manufactures batteries for that model anymore (and installing a third-party battery is blocked by some DRM).

Re: Tesla Model S battery degradation data

#257

Post by bri3d »

kozak wrote: post #255
jacobush wrote: post #198

Earlier quoted context omitted.

Now you made me want to build a luggable computer, maybe with wheels like the large carry-on-baggage with a ton of well-managed batteries in it!

A portable and clean replacement for a small gasoline/diesel generator in luggage form would be nice. So your idea is not too unrealistic.

This product genre exists: check out GoalZero Yeti, Anker PowerHouse, etc.
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