P90D Supercharging Data

[2virgule5]

@David99 did you monitor your 2014 S85 recently and did you see an increase as well?

 

[David99]

@David99 did you monitor your 2014 S85 recently and did you see an increase as well?

I have not gotten any software updates recently. I did a 4400 mile road trip recently and did not see an increase in charge rate. If anything it was slower in several cases. Compared to my data from about 1.5 years ago my car charges about 5 kW slower now.

 

[hiroshiy]

Just one data point with my 2014 P85, 2.28.19. No change in Superchargers rates, at newly opened Hamamatsu Supercharger in Japan.

 

[2virgule5]

Hi Hiroshiy, would you mind sharing the name of the App you are using? Cheers

 

[apacheguy]

@hiroshiy - seems like you had a paired stall. The precipitous decline right around 10 min is indicative of another user on your cabinet

 

[hiroshiy]

Hi Hiroshiy, would you mind sharing the name of the App you are using? Cheers

I'm using TeslaLog.

 

[hiroshiy]

@hiroshiy - seems like you had a paired stall. The precipitous decline right around 10 min is indicative of another user on your cabinet

Hmmm, I was there like a bit over one hour so I didn't really check my other stall. Does it affect my charging rates, considering I'm the one who started charging first? I always thought that the second car in the pair always get remaining power of 135kW... for example if I'm pulling 90kW, then 135-90=45kW would be available to the 2nd car.

 

[apacheguy]

In theory, the one to plug in first should not be affected, but my experience contradicts this. I always see some power dips from another user sharing my cabinet.

At any rate, the taper curve you posted does not look "clean" to me so perhaps there were other factors.

 

[apacheguy]

Also, I can't tell by looking at the graph. What is the blue trace? What SOC % did you start and end with?

Ah I see now. It appears that blue is SOC

 

[hiroshiy]

Yes, the blue is SOC and I started charging from 6km of rated range, or about 1.5% of charge. Anyway it seems that only cars with Silicon anode batteries, i.e. new 60D 70D 75D 90Ds got benefited by the recent firmware upgrade for faster supercharging.

 

[apacheguy]

This would be odd. Firstly, because Tesla was much, much more aggressive with the taper on the newer chemistry from the outset. Only recently did they decide to relax the taper... And by quite a bit - all in one go. Perhaps they didn't like the perception that the 90 kWh charges more slowly than the 85 so they just forced a much more lenient taper?

Secondly, we know from @wk057 that there is considerable room for improvement on the taper for the 85s. But again Tesla may hold back on implementing this because they only want to support the newer models. Hope I'm wrong.

 

[apacheguy]

If you own a 90 kWh battery, have you seen supercharge rates decrease following the 8.0 upgrade?

 

[ShotgunF15E]

If you own a 90 kWh battery, have you seen supercharge rates decrease following the 8.0 upgrade?

No. Here are my SC rates post 8.0 install.

 

[AWDtsla]

Even the 2016 90 packs have the minima right around 55%? Seems like a bug...

 

[apacheguy]

Even the 2016 90 packs have the minima right around 55%? Seems like a bug...

I interpret it differently. That looks like a dip because of some other factor (i.e. another car plugged in).

 

[AWDtsla]

I interpret it differently. That looks like a dip because of some other factor (i.e. another car plugged in).

It's not. Been shown multiple times. It happens when I'm supercharging by myself. We all get the same dip.

 

[apacheguy]

It's not. Been shown multiple times. It happens when I'm supercharging by myself. We all get the same dip.

Hmm. Odd. Then I concur this must be a bug, but it goes back to July so Tesla should have applied a fix by now.