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Higher Mileage Roadsters

I've been doing some research about high mileage Roadsters as I'd like to know how well they have held up. So far the highest mileage Roadster I've found mentioned online was at http://www.teslamotors.com/blog/northern-california-roadster-record with roughly 67,000 miles back in mid April. The article doesn't say much about how reliable the car has been, but I wouldn't take it into consideration anyway cause it is "Validation Prototype 11". Does anybody else have over 50,000 miles on their Roadster? If so, have you had any major problems? I've read that the battery pack loses %30 of it's capacity after about 50,000 miles. Has anybody personally verified this? Thank you in advance for your responses!

+1 for this question. Roadster FAQ mentioned 70% capacity after 50k miles or five years (IIRC). Is that accurate?

For what its worth, I have 24 months and 16,000 miles on my Roadster and the battery pack has lost approximately 3% capacity. I have had no problems at all with the electric power train. In the first couple months I had the car into the shop twice to fix a door handle problem, that has since be reengineered, and to adjust the rear trunk lid latch. I have experienced no other problems with the car.
Rod

Expected Battery Life Seven-years or 100,000 miles

From http://www.teslamotors.com/roadster/specs>

There were figures 50000 miles five years and 70% capacity in now disappeared Roadster FAQ. Can't find that 100000 miles anywhere. Where exactly do you see it (apparently site contents tune itself based on reader IP, so I see European content, kilometers instead of miles and so on).

I bet it is not very much if you take care of your battery. Certainly nowhere near 30% after 50k miles. Another thing to remember is that with the newer firmware update, the roadster lost about 6 miles in standard mode. I would guess they adjusted battery charging parameters.

Okay, go starting from Telsa Motors home page:

Click Roadster at top.

Click Specs on next line.

Click Performance tab.

Scroll down to Battery section.

The "Specs" link is broken, no matter how you try to get there.

@Douglas3, ok, that's where I expected it to be, but it isn't there, so apparently that 100000miles is missing in "European content" of that tab.

This is what it has:

BATTERIA

Custom microprocessor-controlled lithium-ion battery with 6,831 individual cells. 3.5 hour charge time from empty to full using the Tesla High Power Wall Connector at 240 Volts and 70 Amps.

Range 340 km*

Expected battery life Seven-years

Battery heater for cold weather charging to -20 degreesCelsius Standard

* Based on European Electric Vehicle Combined Cycle

Here's what I see (Canadian Content):

Custom microprocessor-controlled lithium-ion battery with 6,831 individual cells. 3.5 hour charge time from empty to full using the Tesla High Power Wall Connector at 240 Volts and 70 Amps.


Range 394 km*

Expected battery life Seven-years

Battery heater for cold weather charging to -20 degrees Celsius Standard

* Tested range in combined LA4 & HFEDS in accordance with California Code of Regulations.


Range 245 miles

Expected Battery Life Seven-years or 100,000 miles

Battery heater for cold weather charging to -20 degrees Celsius

6,831 individual cells (69P x 99S)

Motor power = 215Kw @ 375 Volts = 215,000 / 375 = 573.333 amps

means when motor is giving full power of 215Kw the amps required is 573.33 (of course when voltage is 375).

99 series cells x 3.8 volts = 376.2 Volts (a close guess/ not sure!)

69 parallel x 2.2 Ah = 151.8 Amps

Now the max c-rate,

573.33 / 151.8 = 3.77 C-rate !!!!!!!!!!!

Now max allowable / recommended Crate is 2C by battery companies!
Or else your battery will start degrading and the overall life is will go down............:-(

2C is for different lithium batteries. I think LithiumCobalt are 5C.

Well, yes they to run at 5C, but for 10 sec pulse discharge....

moreover most battery companies claim to have around 1000 life cycles or more for 18650 cells.....

BUT ON THE OTHER SIDE

Roadster goes like 245 miles / single charge !

over-all mileage is around 100,000 miles

100,000 / 245 = 408 cycles (ONLY)

what about remaining 600 cycles ?

Thank you Rod and Barbara! I think some of you misunderstood. I'm looking for real world experiences with reliability and battery life, not what has been posted on the website. :)

bhp;
you are really persistent in your strawman manufacture, aren't you?

Obviously, most people will be doing recharge from partial discharge to full, not from dead empty. In fact, most will drive <<100 mi./day, and recharge each night. Since R&B have had the car 24 mo., and probably recharged it EVERY NIGHT, that's >700 recharges, and the battery is down 3%.

To get to 70%, it will take about 6+ times as long, which is >13 yrs, and also over 100,000 miles.

So it looks like Tesla specs are right on, and that you're full of it.

Was blown away after reading about all the one million mile roadsters in the newsletter. Some of you mathmatical folks do the math comparing similsr price ICE car, take into account battery purchases and price of electicity vs fuel and aprx maintenance of ICE and lets get at least a rough estimate of the comparative economics. Might be that the electric car is an extreme bargain over the long run. Of couse how many ICE cars could run a million miles without major overhauls, {engine, transmission swaps etc.}? Or the most likely scenerio how many different ICE cars would have to be purchased to get this performance.

Can really see the wisdom now for Teslas concept of building foundation on quality rather than quantity. Whenever they do come with the smaller cars the qulity thus demand will be built in and I like their emphasis on safety as I have already discussed safety concerns and small cars. {Hope this is not getting into the stream of consciousness remarks}.

You realize this is combined miles, right? There is no single roadster that has 1,000,000 miles on the odometer. Highest reported is 80k miles.

I thought the Roadster forum was a safe place=)

LOL

Hey qwk, would you happen to have any more information about the Roadster that has hit the 80k mark? I'm wondering if the car has had any problems as well as how much charge the battery will hold.

My bad, obviously didn't read the article in detail. Will reread more carefully. Surely not just Mercedes and Volvo can do this. Know there is one particular Volvo engine that routinly goes 400,000 miles without overhaul. Probably lot more but I just know about Volvo. Seems conceivable Tesla could easily do a million miles with so little parts to wear etc.

My apolgies to everone. Just reread the newletter thing. What a goof on my part But do hope some of the Tesla's will be able to do this. Would this not be cool that they did it "enmasse" as I thought they had done.

@bladerunnings, unfortunately I don't have anymore information. It's one of the VP cars.

Hey dsm363 and qwk, What do you mean. You guys betray your confidence,ha. It could easily happen with a lot of Tesla's dont you think. With comparatively minimum expense as compared to ICE vehicles,huh. That was my preconception and the reason I jumped to this conclusion after a cursory glance at the newsletter. I had a 74 volvo that was still carrying a guy back and forth to work last I heard a few years ago. Solid iron block six cylinder. I over hauled engine unecessrily at about 250 thousand due to misinformation. It could easily have a million or more on it. Cylinders didn't even need rounding when I overhauled it just polished cylinders a little and put stock rings back in it. My plan was never to have to buy another car at the time{I don't like car payments}. But mechanical misinformation messed all this up when problem turned out to be torque converter and nobody I was dealing with could get this right. Apparently somebody eventually did. I tried to locate this car recently just for a backup car. In case I carried my road car to the shop or something.

A Tesla motor will outlast any ICE motor on the planet. It only has one moving part.

The only things you have to replace on an electric car are tires, brakes, windshield wipers, and batteries. Compare this to an ICE which needs the above PLUS clutches, spark plugs, oil filters, oil changes, fuel pumps, alternators, starters, cap, rotor, spark plug wires, air filter, fuel filter, water pump, gaskets, mufflers, exhaust....

An ev is a no brainer!

So qwk a million mile could very likely be a no brainer to. Now lol at that. Just kidding around with you and dsm363. Both have a good day.

One of the Tesla reps told me that the motor may need replacement at around 400,000 miles during an event.

About the only thing there is to wear out on a motor like Tesla uses are the bearings. I wouldn't imagine you would need a whole replacement motor. It would require pressing the old bearings off of the rotor and pressing new ones on.

That would make a lot of sense. Still much better than replacing an entire combustion engine should one last that long.

So if person was really into seeing if could get very high mileage then million miles probably well within reason for EV. Know some of the more expensive ICE cars could get million with about three motor swaps. The particular Volvo engine I was referring to has a lot in production and salesman told me they just don't fool with overhaul, just drop in new motor at about 400,000 miles on routine basis. Sure Mercedes and BMW would be comparable. Maybe interesting to crunch these numbers with total aprx cost of someone trying to get million miles our of ICE and someone trying to get million miles out of EV. Aprx battery cost etc. taken into account.


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