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Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

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Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#151

Post by xxs »

Reason077 wrote: post #132
xxs wrote: post #106

Earlier quoted context omitted.

>12V battery is tiny and would probably not provide enough power LiFePO4 is capable of providing massive amounts of current for its size (way higher than a conventional acid one). 100A is not that high amount of current to run even with 4s4p setup. A 10kg battery would be beyond sufficient (should be able to fully power the brake system for 1h use). Note: jump on the brakes is expected to consume around 1200W

> "A 10kg battery would be beyond sufficient" I don't have the exact weight, but Tesla's LFP low-voltage batteries weigh far less than that. Around 2kg at a guess. Rating is 12.8V nominal, 12Ah, 153.6Wh. Not all that much bigger than a laptop battery!

2kg would be a monster of a laptop battery of course, esp since it's regular Li-Ion (not the one w/ Fe/P). LiFePO4 should be ~150Wh/kg. So indeed, the battery is 'tiny', like 1kg only. Yet, it'd have no issue supplying the brakes - it's less than 10C discharge rate. LiFePO4 tends to have much higher discharge rate which is the important part not the total capacity.

Either way, the battery is indeed 'tiny'

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#152

Post by margalabargala »

fnordlord wrote: post #149
margalabargala wrote: post #125

Earlier quoted context omitted.

You're not correct. A tertiary definition of "only" is "few". "One of the only" for a member of a small set if perfectly correct in English. https://www.merriam-webster.com/dictionary/only

Of all positive integers less than 10, only 4 are even numbers. 8 is one of the only. right?

"8 is one of the only" is a little off because it doesn't have an object, it relies on that being implicit from the prior sentence. "Only" here is an adjective, not a noun. The usage is a little awkward.

It would be more correct to say "there are only 4 positive integers less than 10. 8 is one of them."

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#153

Post by dghlsakjg »

owlninja wrote: post #115
reaperducer wrote: post #100

Earlier quoted context omitted.

one of the only, if not actually the only, Pet peeve: The phrase is "one of the few," not "one of the only." If something is "only," it can't be "one of" something.

I thought it was a widely used and accepted idiom?

Not only idiomatic, it is part of the accepted definition of 'only' in Websters and OED.

It is perfectly acceptable to use only to refer to a select group.

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#154

Post by ianburrell »

margalabargala wrote: post #125
reaperducer wrote: post #100

Earlier quoted context omitted.

one of the only, if not actually the only, Pet peeve: The phrase is "one of the few," not "one of the only." If something is "only," it can't be "one of" something.

You're not correct. A tertiary definition of "only" is "few". "One of the only" for a member of a small set if perfectly correct in English. https://www.merriam-webster.com/dictionary/only

"One of the only" even has its own dictionary page.

https://www.merriam-webster.com/dictionary/one%20of%20the%20...

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#155

Post by sebazzz »

MrBuddyCasino wrote: post #29
bb123 wrote: post #20

Earlier quoted context omitted.

Nothing immediately - Teslas have a both a High Voltage system for the traction battery and a Low Voltage system powered by a separate 12-15V battery. The HV system keeps the LV system charged and most critical safety related functions run on the 12V system. The booster, ABS/ESP, airbags, and steering assist are all designed to remain functional long enough for a controlled stop after an HV disconnection. You obvious…

Didn‘t they switch to 48V?

16V internally

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#156

Post by FireBeyond »

Rover222 wrote: post #82
pengaru wrote: post #39

Earlier quoted context omitted.

> Oh, so this is an actual recall and not just a software update. In an era of software-defined vehicles, the difference is one of convenience, not impact/consequence. Not really worth pointing out, unless you're a service department telling owners how to plan their week.

That’s nonsensical, IMO. Software updates should not be considered recalls at all. Unless it’s a critical safety issue that makes the vehicle unusable.

Awesome. Let's do that, right after we stop calling "place this sticker, which contains a warning about materials in the seatbelt tensioner system, on page 234 of your owner's manual" a recall, too.

The whining about this is old.

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#157

Post by thebruce87m »

adrr wrote: post #40
azinman2 wrote: post #32

Earlier quoted context omitted.

There’s a physical mechanical open mechanism for doors.

I don't have them in my back seats. I had to train my kids to use a glass breakage hammer because Tesla didn't bother to put them on my car.

Which model?

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#158

Post by reaperducer »

NobodyNada wrote: post #117
reaperducer wrote: post #100

Earlier quoted context omitted.

one of the only, if not actually the only, Pet peeve: The phrase is "one of the few," not "one of the only." If something is "only," it can't be "one of" something.

That's not correct; you can say sentences like "The only moving parts in a dishwasher are the two pumps, the sprayer arms, the water inlet valve, and the detergent dispenser"; or "there are only two hard problems in computer science". So "one of the only" sounds just fine to me.

you can say sentences like "The only moving parts in a dishwasher are the two pumps, the sprayer arms, the water inlet valve, and the detergent dispenser"; or "there are only two hard problems in computer science".

In the dishwasher example, "only" refers to "moving parts" which is a collective singular, like how "baseball team" is properly an "it," not a "they."

Same goes for the compsci example. By modifying the plural with adjectives, you narrow its scope.

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#159

Post by NobodyNada »

reaperducer wrote: post #158
NobodyNada wrote: post #117

Earlier quoted context omitted.

That's not correct; you can say sentences like "The only moving parts in a dishwasher are the two pumps, the sprayer arms, the water inlet valve, and the detergent dispenser"; or "there are only two hard problems in computer science". So "one of the only" sounds just fine to me.

you can say sentences like "The only moving parts in a dishwasher are the two pumps, the sprayer arms, the water inlet valve, and the detergent dispenser"; or "there are only two hard problems in computer science". In the dishwasher example, "only" refers to "moving parts" which is a collective singular, like how "baseball team" is properly an "it," not a "they." Same goes for the compsci example. By modifying the pl…

It's definitely not a collective singular, you say "the moving parts are", not "the moving parts is"; and "there are hard problems", not "there is hard problems".

Either way, the usage in the original comment was exactly the same as the dishwasher example: "the only moving parts are X, Y, and Z" => "X is one of the only moving parts".

Re: Tesla Recalls Almost 13,000 EVs over Risk of Battery Power Loss

#160

Post by Rover222 »

Reason077 wrote: post #124
Rover222 wrote: post #82

Earlier quoted context omitted.

That’s nonsensical, IMO. Software updates should not be considered recalls at all. Unless it’s a critical safety issue that makes the vehicle unusable.

That's exactly what recalls are: important safety issues that need to be fixed, regardless of whether the fix involves hardware or software. Past Tesla recalls addressed by OTA updates include fixes for braking, steering, headlights, tire pressure monitoring, collision avoidance, etc... https://www.cars.com/research/tesla/recalls/

fair point
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