Towing a Tesla at 70 MPH replenishes battery at fast charger rates

Re:Towing a Tesla at 70 MPH replenishes battery at fast char... by millerm on Monday June 21, 2021 @09:56PM (#27587129)

But it’s not just 5k lbs free rolling. The regenerative brakes are an opposing force and increasing the load. So, it could be equivalent to 10k lbs. I have no idea how to calculate that though.

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Re:Towing a Tesla at 70 MPH replenishes battery at fast char... by matt-attack on Tuesday June 22, 2021 @02:09AM (#27588527)

Remember that the weight of a load is entirely meaningless when pulling at a constant speed on level ground. The force experienced by the tower is entirely a result of air resistance and road friction.

On level terrain, the weight of the load is only relevant for the very transient period of coming up to speed. That is the acceleration phase.

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Re:Towing a Tesla at 70 MPH replenishes battery at fast char... by rootusrootus on Monday June 21, 2021 @10:20PM (#27587253)

> So, it could be equivalent to 10k lbs. I have no idea how to calculate that though

It wouldn't have a good equivalent mass, since it would be entirely through rolling resistance that you'd get that equivalency. A better comparison would be wind resistance.

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