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My Toyota hybrid says it's charging the battery while coasting downhill: HOW????

If I'm touching the brakes, sure, regenerative braking shoul...
Startled sweet tailpipe stain
  11/07/25
wow you’re really dumb
Excitant piazza toaster
  11/07/25
does the gearing go opposite direction and generate electric...
indigo school mental disorder
  11/07/25
the gas motor itself charges the batteries. don’t need...
Excitant piazza toaster
  11/07/25
No, the animation in the dash cluster shows the battery bein...
Startled sweet tailpipe stain
  11/07/25
park the car for two hours in neutral and see what happens w...
Excitant piazza toaster
  11/07/25
Keep spinning Jared
Startled sweet tailpipe stain
  11/07/25
lol@ this fat dumb bitch thinking he knows the answer. It's ...
Startled sweet tailpipe stain
  11/07/25
Aren’t you both Liberal
Shivering newt
  11/07/25
In a gas powered car you can downshift when going downhill a...
Shivering newt
  11/07/25
I know what engine braking is and it generates friction. Wha...
Startled sweet tailpipe stain
  11/07/25
lol at nsam driving a Prius
racy market
  11/07/25
Prius is the best car ever made
Startled sweet tailpipe stain
  11/07/25
This guy gets it, but why is this better than frictionless c...
Startled sweet tailpipe stain
  11/07/25
Get a load of this: your car can even MOVE ITSELF down a hil...
internet-worthy flushed mexican
  11/07/25
Imagine if your gas tank refilled itself every time you coas...
Startled sweet tailpipe stain
  11/07/25


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Date: November 7th, 2025 12:29 AM
Author: Startled sweet tailpipe stain

If I'm touching the brakes, sure, regenerative braking should charge the battery. But when my foot is off both pedals, the car should just coast like it's in neutral. How is electricity being generated at that time?

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409142)



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Date: November 7th, 2025 2:30 AM
Author: Excitant piazza toaster

wow you’re really dumb

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409190)



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Date: November 7th, 2025 2:47 AM
Author: indigo school mental disorder

does the gearing go opposite direction and generate electricity?

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409194)



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Date: November 7th, 2025 3:26 AM
Author: Excitant piazza toaster

the gas motor itself charges the batteries. don’t need to be in gear or in motion for that

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409198)



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Date: November 7th, 2025 6:35 AM
Author: Startled sweet tailpipe stain

No, the animation in the dash cluster shows the battery being charged from the wheels not the engine you tard. The engine isn't even running when it's going downhill. Goddamn you're stupid

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409269)



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Date: November 7th, 2025 9:14 AM
Author: Excitant piazza toaster

park the car for two hours in neutral and see what happens when the battery charge dips

hint: the wheels don’t have to move to recharge the battery

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409403)



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Date: November 7th, 2025 9:15 AM
Author: Startled sweet tailpipe stain

Keep spinning Jared

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409410)



Reply Favorite

Date: November 7th, 2025 6:35 AM
Author: Startled sweet tailpipe stain

lol@ this fat dumb bitch thinking he knows the answer. It's RSF of course

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409270)



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Date: November 7th, 2025 7:24 AM
Author: Shivering newt

Aren’t you both Liberal

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409293)



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Date: November 7th, 2025 7:23 AM
Author: Shivering newt

In a gas powered car you can downshift when going downhill and barely use any fuel. The force of going downhill keeps the engine moving. You aren’t “in neutral” in an automatic or manual in that situation. Same principle in your hybrid. It’s using momentum to charge. And it takes more energy to go uphill than to climb a flat surface btw. What liberal art did you major in btw?

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409291)



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Date: November 7th, 2025 8:33 AM
Author: Startled sweet tailpipe stain

I know what engine braking is and it generates friction. What is generating friction that recharges the battery when I coast in a hybrid? Is Toyota capturing waste heat from the tires?

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409337)



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Date: November 7th, 2025 7:23 AM
Author: racy market

lol at nsam driving a Prius

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409292)



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Date: November 7th, 2025 8:35 AM
Author: Startled sweet tailpipe stain

Prius is the best car ever made

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409339)



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Date: November 7th, 2025 9:18 AM
Author: Startled sweet tailpipe stain

This guy gets it, but why is this better than frictionless coasting?

----

There is mild regen even when coasting (unless you actually switch the car into N) but obviously more if you depress the brake pedal.

Once the regen reaches the “off” line that’s when you know you’ve engaged the friction brakes.

I could do a deep dive into this as I find forced regen of any kind a detriment to efficiency, but I’ll suffice it to say this:

Coasting > regen braking > friction braking

https://www.reddit.com/r/rav4club/s/KhGhdzXROs

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409418)



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Date: November 7th, 2025 9:22 AM
Author: internet-worthy flushed mexican

Get a load of this: your car can even MOVE ITSELF down a hill without any gas! Cons??? Libs???

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409426)



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Date: November 7th, 2025 9:30 AM
Author: Startled sweet tailpipe stain

Imagine if your gas tank refilled itself every time you coasted downhill

(http://www.autoadmit.com/thread.php?thread_id=5794500&forum_id=2).#49409458)