Loud humming noise while charging at supercharger

[bhakan]

Today when I was at the Strasburg, VA, supercharger, I heard a loud humming sound that was possibly coming from the frunk area when the rate went up to 304mi/hr. I was at the same supercharger the previous day on my way to Blacksburg, VA and did not hear any noise. i noticed at least 297mi/hr that day. Is it normal to have a loud noise? Does it occur when it is over 300mi/hr? I was worried. I waited and went to nearby coffee place and came back and i did not hear any more noise.

2017 Model S 70, EAP premium pkg, Subzero pkg

 

[ucmndd]

Yes it’s normal. The battery cooling system sometimes runs full tilt at very high charge rates.

Also note that the mi/hr rate displayed while supercharging is an average over the entire session. Use the kw number for an idea of instantaneous charge rate.

 

[bhakan]

Yes it’s normal. The battery cooling system sometimes runs full tilt at very high charge rates.

Also note that the mi/hr rate displayed while supercharging is an average over the entire session. Use the kw number for an idea of instantaneous charge rate.

Noticed around 72KW at this instance . However, I had noticed 92-93 kw in earlier supercharging when I did not hear any noise. That's why i thought if the rate had any significance.

 

[Puggle]

Normal. The system will cool itself as required. It isn't predictable either and you often won't see a correlation with the kw going in.

Learn to love the sweet sounds of the future.

 

[supratachophobia]

Today when I was at the Strasburg, VA, supercharger, I heard a loud humming sound that was possibly coming from the frunk area when the rate went up to 304mi/hr. I was at the same supercharger the previous day on my way to Blacksburg, VA and did not hear any noise. i noticed at least 297mi/hr that day. Is it normal to have a loud noise? Does it occur when it is over 300mi/hr? I was worried. I waited and went to nearby coffee place and came back and i did not hear any more noise.

2017 Model S 70, EAP premium pkg, Subzero pkg

I'd be concerned if your car *didn't* sound like an Airbus 380 at takeoff, while you were supercharging.

 

[gg_got_a_tesla]

Also, if your battery is hot from you having driven it hard before arriving at the Supercharger, the fans would be going crazy! I usually walk away from the car in order not to be embarrassed in front of someone walking by.

Nothing to worry about.

 

[smartypnz]

Probably the rubber band being rewound.

 

[Stiction]

Probably ~10% of the charging power is wasted as heat. With 120kw of charging current that's
about 10-12kw.

equivalent to 12 blow dryers under the car..... Hence the humongous fan that starts up...

 

[Naonak]

Make sure your louvers are opening when the cooling activates. I had the same problem at one point and one of my louvers were broken, so it was only cooling through one side, and it was obviously struggling because of it, so it would go in to high power cooling mode.

 

[bhakan]

Make sure your louvers are opening when the cooling activates. I had the same problem at one point and one of my louvers were broken, so it was only cooling through one side, and it was obviously struggling because of it, so it would go in to high power cooling mode.

How would I know that one of the louvers are broken? Isn't it TSC that can verify that?

 

[Buster1]

Look at them! They’re right next to the fog lights and behind the horizontal chrome “slats.”

 

[X Fan]

I'd be concerned if your car *didn't* sound like an Airbus 380 at takeoff, while you were supercharging.

haha, taken them many times and noise inside cabin was less.....more like an aircraft gearing up to be catapulted to me (USS Midway Marine Corps Vet)