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Does it matter which supercharger I use on my 2017 Model S?

Greg

Member
Jan 17, 2013
38
11
USA
I have a 2017 Model S and I am wondering if my charging speed will be the same at a 250 KW supercharger vs a 150kw or 72kw charger station. Like everyone else I want to charge as quickly as possible and if my charging speed is the same or virtually the same from the 250 KW and 150KW charger then I will have more choices on where to charge as I go on my trip.

With all of this said, I did speak with Tesla support and the person said it does not matter which supercharger I use, I will pretty much get the same charging speeds at any super charger (including 72 KW). And he said that the speed that my S chargers at will be pretty much the same as a new Model 3. That does not seem right at all. I have freinds who have a 3 and they say the charging speeds will sometimes by up to 1,000 mph while the fasted I have ever charged at is 450-480 mph.

Lastly, should I change my Current Charge Amps from 40 to the max of 48? Will this increase my charge speeds?

Any input is greatly appreciated.
 

ucmndd

Well-Known Member
Mar 10, 2016
6,660
12,511
California
I have a 2017 Model S and I am wondering if my charging speed will be the same at a 250 KW supercharger vs a 150kw or 72kw charger station. Like everyone else I want to charge as quickly as possible and if my charging speed is the same or virtually the same from the 250 KW and 150KW charger then I will have more choices on where to charge as I go on my trip.

With all of this said, I did speak with Tesla support and the person said it does not matter which supercharger I use, I will pretty much get the same charging speeds at any super charger (including 72 KW). And he said that the speed that my S chargers at will be pretty much the same as a new Model 3. That does not seem right at all. I have freinds who have a 3 and they say the charging speeds will sometimes by up to 1,000 mph while the fasted I have ever charged at is 450-480 mph.
The simple answer is that your car will never charge faster than ~150kw, so there's no reason for you to seek out the faster v3 chargers.

The slightly more complicated answer is that older 150kw (v2) chargers are shared in pairs - you'll see the stalls numbered 1A, 1B, 2A, 2B, etc. A station can only provide 150kw max to BOTH stalls - so if you're charging at 1A and someone plugs into 1B, the power is shared and you may not receive the max rate your car can handle. The newer 250kw (v3) stations have more sophisticated power sharing abilities, so you're much more likely to receive the max power your car can take regardless of where you plug in. So if a v2 station is busy, and you have the option to seek out a v3 station instead, that might be the better choice - even though your car will never get close to the 250kw max.

Lastly, should I change my Current Charge Amps from 40 to the max of 48? Will this increase my charge speeds?
Yes, if you have a Tesla Wall Connector installed that is capable of charging at 48 amps, that will charge your car faster than 40 amps. The mobile connector that was originally included with your car maxes out at 40 amps.
 

Greg

Member
Jan 17, 2013
38
11
USA
UCMNDD,

Thanks for your input. I was pretty sure that Tesla support guy was wrong about my car charging as fast as others and I had an idea that I could not take advantage of the 250kw chargers. Regarding the 40 amps setting, does this make a difference when superchareging or does it only make a difference for charging at home.
 

ucmndd

Well-Known Member
Mar 10, 2016
6,660
12,511
California
UCMNDD,

Thanks for your input. I was pretty sure that Tesla support guy was wrong about my car charging as fast as others and I had an idea that I could not take advantage of the 250kw chargers. Regarding the 40 amps setting, does this make a difference when superchareging or does it only make a difference for charging at home.
Amperage setting doesn't apply to supercharging - only home/AC charging.
 

Rocky_H

Well-Known Member
Feb 19, 2015
6,406
7,564
Boise, ID
@Greg And in case you haven't found out about this part yet, do you know of the tapering curve that is very noticeable with Supercharging? That really high power charging happens when the battery is very low. As it fills up, and you're getting to 30-40-50% and above, you are going to start to see that power reducing by the car telling the Supercharger to lower the power.

Charging speeds should still be really good up to about 70-80%, but it's going to start to be a waste of time if you try to "fill 'er up" at Superchargers while you are on a trip. Just blast up to that upper mid range and then go, and it will be much more time efficient than trying to fill all the way.
 

Greg

Member
Jan 17, 2013
38
11
USA
Rocky - thanks for your input. I do realize that charging is much faster and an empty battery and it slows down a bunch once it’s mostly charged.
 

ASUComputerGuy

Supporting Member
Sep 9, 2016
83
142
Raleigh, NC
FWIW, I have gotten a max of 184kW with my 2018 Model S 100D. If you have the 100kWh battery, the V3 chargers will go a bit higher than 150kW, but I'm not sure its worth extra effort to seek out V3 chargers specifically. The higher charge rate usually only lasts a few minutes, anyway.

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