No regen resistance….

[HC_79]

So when regen is on and used does that giving back mean it increases the range a little or is that just a relative term for the generation of friction by the motor to stop/slow down the car without the use of traditional breaks which saves break tread.

It places energy back into the battery and therefore maintains or gives you more range.

Regen is your friend

 

[Bel]

So when regen is on and used does that giving back mean it increases the range a little or is that just a relative term for the generation of friction by the motor to stop/slow down the car without the use of traditional breaks which saves break tread.

It gives it back to the battery and thus increases the range and this power route is similar energy-wise as it took to accelerate up to the speed you were driving at before you let up the accelerator but minus the wind and rolling resistance during regen/deceleration. Lets say youll get something like 85% range energy back as it took to accelerate up to your speed. Yes, pads may become rotten before they need replacement.

 

[Volker.Berlin]

Let me add to the confusion. Regen is silver but coasting is gold. Let’s be clear that this is not relevant in practice but makes a noticeable difference when „hypermiling“: Friction brakes (pads on disks) are worst because they dissipate the entire movement energy into heat which is then gone forever. Regen is much better because it can recoup at least part of the energy that was used for acceleration during deceleration, as explained by fellow forum members above.

Coasting means freewheeling with the minimal possible resistance, not adding energy to the system, nor taking away more than is unavoidable (mostly air drag and rolling resistance in tires and bearings). Coasting makes the best use of the energy that was already converted from chemical (battery storage) to electrical (motor) to movement. Regeneration goes the opposite way and converts from movement to electricity to chemical energy. Every energy conversation has „losses“ (heat dissipation), which may be small but always greater than zero (fundamental physical law). Therefore, even with regen you’re necessarily gonna lose some.

If you want to optimize mileage, prefer coasting/freewheeling over regenerative braking, and prefer regenerative braking over friction braking, as far as traffic, road conditions and weather permit.

There is no „coasting option“ directly available in most EVs. Some cars automatically decide between coasting and regen when you lift off from the accelerator, based on information from navigation and sensors. As of today, neither Tesla nor Lucid does this. You have to either hold the accelerator gently pressed, or switch the gear lever to Neutral (only when you feel comfortable doing so, and on your own risk!), to achieve coasting.

 

[Slam08]

Driving with regen is a paradigm shift. No more acceleration and coasting. Put your foot down until you get to the speed you want and leave it there.

Takes some getting used to.

 

[MikeTz]

The Taycan has a very slight regen. Regen is applied as the brake pedal is pressed and increases to max just before the pads are starting to grab. Freewheeling takes time getting used to, especially when switching from a high regen EV to the Taycan.