A record? Max Supercharger: +275 mph!

[arg]

Cool, and all, but I want to know is this: how does that rate taper down as the battery approaches full? Anyone got a graph or a screen shot of this? 300 mph implies an empty 85 kWh battery will be full in about an hour, but I know from experience with other EVS that the charging rate tapers off greatly during the last 25% or so.

I've been linking relevant info, including this thread and Cinergi's graph on the wiki here, but it's evident that the graph is now out of date.

It would be useful if people posted their software version alongside these rate reports, as the rate profile is almost certainly set by the car rather than the supercharger itself (though the supercharger obviously limits the maximum rate).

 

[scaesare]

Interesting comment about the rate being "according to how you drive". I assume that poster does NOT mean that the display is accounting for that in what #'s it reports, but rather that if you are consuming more KW/hr than the "rated" or "ideal" projections, than you have to adjust your expectations accordingly?

If so, then while that's certainly true, I think the intent of the OP was to compare what the individual Supercharging stations are able to output in power.. not what you do after you get in and drive it.

Given the differences in ideal vs. rated range, I agree showing the numbers in KW is probably the most direct comparison. I didn't think to do that yesterday when I Supercharged for the first time (twice). I was seeing ~286 miles/hr (rated) at the Delaware station, with no other cars in the bay....

(Does anybody even use "ideal" miles?)

 

[MikeC]

Cool, and all, but I want to know is this: how does that rate taper down as the battery approaches full?

It's really not bad, the other day at Barstow I was still getting 175 rated mph as I reached the 230s. Steep drop off in the 260s, I recall getting 30 mph at 266.

 

[brianman]

(Does anybody even use "ideal" miles?)

Salesmen and apparently the loaner fleet. I changed Ideal->Rated, Creep->NonCreep, Comfort->Sport on my loaner. I restored the latter two settings but left the former. I suspect those receiving the loaner after me will be glad I left the setting on Rated.

 

[NotMandatory]

It was in fact based on your driving.
It's been fixed -- but I'm not sure which version fixed it.

Ahh...this might explain how I saw 31 mph rated recharge rate the first night after we had our 14-50 installed, but each time after that it never got above 28. We received the car with firmware 4.4, but within a few days of seeing the unicorn-like 31 mph charge rate from our 14-50 we got upgraded to 4.5.

So I would postulate that 4.4 based the recharge rate on our actual driving profile (which has been pretty close to 280 Wh/m) and 4.5 bases it on the "standard" or "typical" 308 Wh/m usage rate, as that difference would almost perfectly match the difference between computing the recharge rate from our 280 Wh/m versus 308 Wh/m. Not entirely sure if that's actually the case, but the math certainly fits my observations...

 

[jkirkebo]

(Does anybody even use "ideal" miles?)

I will probably use ideal when I get my car. I usually average around 45mph on roadtrips over here (Norway) and I guess Ideal will match that better than Rated.

 

[brianman]

at Hawthorne a couple weeks ago..

Keep in mind that integer rounding makes this more complicated to compare apparently. If you multiple the display V*A for John's screenshot vs. mine, mine ends up higher. If you look at the by-distance rate reported his is higher.

Approximate time for photos:
7/11/2013 5:31:35 AM

 

[deonb]

Why is the display sometimes in kW and sometimes in mi/hr?

 

[brianman]

Why is the display sometimes in kW and sometimes in mi/hr?

Setting:

 

[deonb]

Setting

Interesting. I'll try it out. On Sunday I unplugged from one SuperCharger (which was showing kW) and I just plugged into another and it was showing mi/h. I definitely didn't change any settings in between, but I'll go see if it changed by itself for some reason.

 

[scaesare]

Interesting. I'll try it out. On Sunday I unplugged from one SuperCharger (which was showing kW) and I just plugged into another and it was showing mi/h. I definitely didn't change any settings in between, but I'll go see if it changed by itself for some reason.

Probably the same gremlin that vented my sunroof of it's own accord while I was driving the other day.

 

[SFOTurtle]

How do we get to 120 kWh? Is it 255A @ 470ishV?

Similar question: When do we start seeing something close to 120 kWh? I haven't been to Atascadero or Buellton -- are these not the newest SCs and capable of that?

 

[brianman]

120 kWh ... Atascadero or Buellton -- are these ... capable of that?

We won't know until the vehicles have the new firmware.

 

[stopcrazypp]

How do we get to 120 kWh? Is it 255A @ 470ishV?

To answer the original question, the way battery charging works is the charging voltage will stay the same (370V-ish) and the current will be what will go up. So expect about 325A.