Supercharging Speed

[Barcius]

Hi,

I have taken my MX from Chicago to Florida and we experienced great Supercharging speeds averaging 115Kw. I recently got my second Tesla a M3P+ and the car has now 1,700 miles and the max I have seen my car take is around 40Kw. I was wondering what speeds other M3P owners have been experiencing and if I should take my car to service for an inspection.

Thank you,

Al

 

[TexasEV]

Need more details. What SOC were you at? Could you have been on a paired charger? What was the temperature?

 

[Barcius]

Need more details. What SOC were you at? Could you have been on a paired charger? What was the temperature?

Bought my car in August and have been in different supercharging stations around the Chicagoland area. Temperature has not been an issue when traveling with my MX. The rate of charge has been constant around 45Kw for my M3P+ and 75-115Kw for my MX.

 

[YusufT]

I noticed if I go to the supercharger with an already hot battery it locks at 45kw. When I accelerate every chance I get it locks itself to 45kw, but if I drive like a normal person I get full speed unless it’s a shared stall. This doesn’t happen with my LR RWD Just with M3P

 

[Bunky]

Have had my M3 for just a couple of weeks but I haven't pulled more than 45kw yet on non-paired chargers. Granted it has been a bit cold but I feel like this is way too slow. This is my first Tesla so I don't have anything to compare it to.

 

[Zoomit]

When I was driving my 3LRD home, I stopped after 2 hrs of highway driving in warm weather and it supercharged at 118-120kW. Optimal conditions yields optimal recharging power levels.

 

[Barcius]

I noticed if I go to the supercharger with an already hot battery it locks at 45kw. When I accelerate every chance I get it locks itself to 45kw, but if I drive like a normal person I get full speed unless it’s a shared stall. This doesn’t happen with my LR RWD Just with M3P

Interesting. I do not drive too hard, but it looks like does not matter the conditions I always get 45kw. I wonder the M3P get a different charge rate than other M3

 

[boiler81]

Yeah this weekend I only got 34kW at the full (8) stall urban Supercharger in Issaquah, WA.
My car had driven 20 miles when I got there and may have been tapering off since I only had 20 min. remaining.

P.S. Issaquah, WA commercial power rate is $0.0946/kW, yet we pay $0.25/kW at Supercharger. I'm willing to pay my fair share for charging cost and infrastructure, but the disproportional rates Tesla charges in WA suck.

 

[MorrisonHiker]

Yeah this weekend I only got 34kW at the full (8) stall urban Supercharger in Issaquah, WA.
My car had driven 20 miles when I got there and may have been tapering off since I only had 20 min. remaining.

P.S. Issaquah, WA commercial power rate is $0.0946/kW, yet we pay $0.25/kW at Supercharger. I'm willing to pay my fair share for charging cost and infrastructure, but the disproportional rates Tesla charges in WA suck.
View attachment 355428

It's expected that your charging rate will be slow when your battery is already so full. If you wait and recharge when your battery is nearly empty, then you'd see rates of 115 kW or more.

 

[SigNC]

I've pulled 115kWh on my P3D but only when it's lower state of charge and it's either warm outside or i've long ago made the dots go away in the regen area. I believe even with full regen capability you still could easily be cold enough to not get full 115kWh speeds.

 

[TexasEV]

Yeah this weekend I only got 34kW at the full (8) stall urban Supercharger in Issaquah, WA.
My car had driven 20 miles when I got there and may have been tapering off since I only had 20 min. remaining.

P.S. Issaquah, WA commercial power rate is $0.0946/kW, yet we pay $0.25/kW at Supercharger. I'm willing to pay my fair share for charging cost and infrastructure, but the disproportional rates Tesla charges in WA suck.
View attachment 355428

You were about 80% full and your battery hadn’t warmed up yet if you were only driving 20 minutes. I think your charge rate was just as expected. Why even supercharge in those circumstances?

As for the expense, most commercial power has demand charges in addition to the per kWh rate. Is that true for your utility? Don’t forget the sites have six figure construction costs. That’s hard to make up a few cents per kWh at a time. Too cheap and people would depend on superchargers rather than installing a 240V circuit at home.

 

[longshot49]

@boiler81
Max speed is available between 0-50%. SOC.

Charge speed is pretty much where it should be considering the SOC from your pic.

Charge speed vs SOC has been posted elsewhere here and is very interesting read.

 

[longshot49]

Beaten to it by @TexasEV

I don't even think battery temperature is a limiting factor... I agree... only supercharge over 80% if you have to. Otherwise it is more time efficient to charge "just enough" to get to next supercharger.

 

[SigNC]

Just for my own edification anybody know at what battery temp full regen is possible vs what temp 115kW is possible (assuming low enough state of charge)? I'm guessing full regen is around 50f battery temp and 115kw would be closer to 75f. Anybody have that data handy?

Also, some people have been reporting decreasing speeds when supercharging and relating it to the battery cooling. I would think this is incorrect. Even with no dedicated battery heater if you are putting in 30,000 - 40,000 watts I would think the resistance would create enough heat to warm the pack. I have to assume it's only going down as the SOC is reaching a taper. Am I correct or incorrect in that assumption?

 

[pdamski]

This is at the Cabazon Supercharger.

 

[Garlan Garner]

I've seen 120k at times at the Country Club Hills - Chicago SC.

 

[pdamski]

BTW, there were a couple of new Tesla Supercharging stations at Cabazon that have not yet been installed. A completely different design. I will go get some photos later today.

 

[MorrisonHiker]

BTW, there were a couple of new Tesla Supercharging stations at Cabazon that have not yet been installed. A completely different design. I will go get some photos later today.

Supercharger pallet - Triple urban SCs

 

[pdamski]

Supercharger pallet - Triple urban SCs

There goes that excuse to take a ride!! Thank you for posting the link.

 

[chronopc]

I've never been able to manage 120kW. The best I've gotten was 118kW at Kettleman City.