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Assuming that you're talking about whether to switch to range mode as the battery is getting low and not whether you charge in range mode, then it...
I had a problem where my key fob would not lock the car, but it was fine with unlocking and opening the trunk. It didn't seem to be an RF...
Oh, yes they have. They raised the price of the original Roadster after taking deposits and figuring out that they couldn't make the cars for what...
That's not my experience. If I arrive within a few hours of the scheduled start time, it will start on plug-in. I don't know how long the window...
Whoever pointed out that investing in, say, index funds is much better than cars was right. They pretty much always do better, they don't require...
That's certainly true. For several years after I got my Roadster, I'd nearly always have to explain what Tesla was. Doesn't seem to happen much...
I managed to hold off for nearly a week! That was it, though, I ordered today. Standard, not Founders'. I couldn't see sending that much cash...
You'd think. I was a little surprised. IIRC, an ideal mile in the original Roadster is 238 Wh. In practice, as we all know, it's really hard to...
Just to revive a thread I started 8 years ago (!), I did a very back-of-the-envelope comparison of the (obviously original) Roadster to a bicycle...
Or R200?
I've been using my Roadster Foundry mobile charger since I got my car. It's worked perfectly, the only problems being that the plug got a little...
Adding #541 (EU). It's a pretty typical low-mileage car: Looking better than average on the by-days graph and worse on the by-miles, which is...
Adding our 11th car, #209. It looks pretty middle-of-the pack. It's got one big jump down without a long drive around 2100 miles, but we've seen...
The most important option decision is whether to get one with the original or 3.0 battery. It's by far the most expensive option on the car....
Yes! The more data the better, regardless of the duration or mileage. I'll send you a PM with instructions. Thanks!
I think that range charging often increases CAC. I know that it pretty much always does with my car. That said, it's important to remember the...
Adding new data for #660, very low mileage car. It saw several big steps down in CAC in this data, including a drop from 210.4 to 206.9 on 9/18...
Yes. My CAC is at 192 now, and the last time I range charged it (last week) it was at something like 308-310 at full charge. The real question...
I agree. I think that it's probably best never to plan to use the last 10% that you unlock with range mode. If something unexpected happens,...
Updating with another month's data for my car, which is now at nearly 21K since the upgrade. My CAC is about the same as it was 2K miles ago, at...
I just got 6 months' more data for #425 (thanks, ecarfan!). It's interesting and a bit of an outlier. It's now the car with the largest number...
Here's a 3D version of both charts with axes for days, miles and CAC. When I ran a two-variable linear regression, I unsurprisingly got a much...
I've always wondered what a study like would look like with an actual car profile for charge/discharge rates. While we might have a few seconds...
It'll look faster when compared to cars at similar mileage, and slower when compared to cars at similar age. The reduction seems to be some...
Here are the promised regression models. I left out #330(EU) because it's a special case. The model slopes are -0.00143 Ah/mile and -0.04492...
Adding thebabydoc's #707 (thanks!!), the tenth car in the data set. His second try sending at least made it into my junk mail folder, where I was...
I mentioned this morning that it would be nice to have more data for #33, and this evening I get a message with new logs. Thanks so much, Steve!...
About the charge level vs. fade debate: I also have seen data that shows that cells fade more the higher the SOC. However, the curve that I saw...
I seriously doubt that it has anything to do with the actual fade rate of the cells (and in fact, as you've pointed out, high SOC is probably bad...
Oh, and the other bumps in #670's line (like at 9500, 11500, 15K and 17K) are also when I range charged it, typically once or twice, not for a...
Perhaps we'll get an update on #33. 670 is mine, so I update it all the time, and Dave sends me logs for #181 every few months, but the latest...
Hard to say. And since I'm taking it on a long drive tomorrow and will be range charging it, that will likely throw the data off some. One thing...
Adding dhrivnak's #255 and a few weeks' more data for my #670, as well as changing the color of some lines, and fixing up the gridlines to make...
Sorry, I misread my own graph. It is indeed about 1K miles.
Here are two new cars, both from the EU. dpeilow's #330 and Kerios' 277. 277 seems pretty similar to what we've seen with other cars, but 330...
Yes, they run the antenna up the corner of the windshield inside the trim. I know, because the trim came off of mine (probably because they...
They have them, or at least they used to years ago, but I don't know of any way to get them other than to have a friendly service person tell you...
It must be a FAT32 USB (< 4Gb) with a directory in the root called VehicleLogs. Someone posted instructions about how to use VMSParser, which I...
You can get really nice data from the logs after tracking the car. That said, you'll probably be disappointed in the Roadster on the track. It...
You're right, I just looked at the log again and it's 660. I think I took 1341 from the filename rather than content. Oops. I'll fix it next...
Mine runs when the car is on, charging or charged in range mode (and I think also if the battery is hot), but ordinarily when the car is sitting...
I had similar things happen, and it was the fan but not the PEM. So, many hundreds of dollars, but not $10K when/if they can even get a new PEM....
What happened at 7000 miles was that I suspected that it was unbalanced, so I range charged it every night for a week, which caused the CAC to go...
It looks like this, but I'm not sure that I can learn anything more from it than from the zoomed in one. We'll probably have to wait until...
Here's the latest data, adding hurd300403's #1341, which is interesting because it's by far the least driven car. It looks really good on the CAC...
You should move to the east side. It's much cheaper to register my Roadster, because I live just outside of the RTA area.
Wow, you can get 300kW from 5Kwh of batteries (60C)? I didn't realize that they'd gotten that good. How do the high power batteries do for cycle...
How about adding super capacitors for a power burst, combined with a small-ish battery for low weight? Making a guess on mass and efficiency,...
One thing to consider is that you almost certainly will use more than one ideal mile per real mile. Getting ideal range only happens when you...
So in 2020 they'll have a sports car that gets 2.4s 0-60 (claimed), while today's Model S sedan does 2.5s (measured)? And theirs needs a range...