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A comment on Hertz's Bet on Teslas Went Horribly Sideways. Parent comment

Re:Hertz's Bet on Teslas Went Horribly Sideways by amluto on Thursday April 04, 2024 @05:07PM (#39935813)
At least last time I checked, Teslas had rather anemic battery heaters. IIRC they’re around 6kW.

6kW is not enough to make a big dent in required mechanical braking, and it’s also not enough to quickly heat the battery pack, especially when operated intermittently.

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Re:Hertz's Bet on Teslas Went Horribly Sideways by gnicholas on Thursday April 04, 2024 @05:57PM (#39936281)
I thought GP was referring to generating heat for HVAC, which is an interesting idea. I assume one challenge would be getting the warmth from the brakes to the cabin.
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Re:Hertz's Bet on Teslas Went Horribly Sideways by amluto on Thursday April 04, 2024 @07:36PM (#39937140)
A gadget to recover heat from a disk brake would certainly be interesting, but it sounds complex, messy and expensive.

A bigger battery/coolant loop heater sounds more straightforward — the mechanism to convert kinetic energy to current is already there.

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Re:Hertz's Bet on Teslas Went Horribly Sideways by Scoundreller on Thursday April 04, 2024 @06:21PM (#39936522)
Yeah, from what I've read, Tesla max regen is 60+kw. Does it just lockout regen braking until the battery pack is "receptive"?
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Re:Hertz's Bet on Teslas Went Horribly Sideways by amluto on Thursday April 04, 2024 @07:00PM (#39936880)
It limits max regen power, and the limit is variable. There’s a cute little indicator on the dash.
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