EV general discussion

There’s no technical reason the headlight cluster can’t have replaceable LEDs. It’s a cost saving measure.
 
Mr Jack said:
My advice - and I have yet to get my own EV, it's coming in June - is to see how you get on with a boring old wall plug and decide whether you actually need to get a specialist charging box fitted.

A 13A/240V supply will charge an e-Golf completely overnight; do you actually need to be able to charge faster than that?

Obviously, if you don't already have a suitable external power supply in a good place for where you park your car, ignore me :)
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I was originally planning to do this but after reading a bit I’m concerned about the risks of pulling that much power from a 3-pin socket. Especially overnight
 
R4z0r said:
I was originally planning to do this but after reading a bit I’m concerned about the risks of pulling that much power from a 3-pin socket. Especially overnight
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If you can put it near-as-damn-it/its own circuit it shouldn't be an issue. It draws closer to 10A and the granny chargers have thermal protection built in. I've been doing it for 2 years now.
 
bigmike20vt said:
thats great... i didnt think you could do that with xenons. That makes them even better than i thought (and i was already a fan of them)

so what is their downside then? (energy use i guess?)
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Yeah they are always on and the blank zones are done with shutters so there’s also a mechanical element to the system.
 
Make the LED bulb, the power supply/control unit and the housing separate units/modules.

Especially these days when replacing a headlight housing assembly can me removing radiator grills and front bumpers.
 
The_One said:
Anyone seen the new 2025 cupra born?

They've added a bigger motor and it has paddle shift gearchange :confused:


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paddles will likely either be for regen or eco / power modes..... unless they have tried to copy why hyundai have done with that special edition ionic 5.

i love the looks of the cupra born and if my parents ever buy a new car i really hope they give that car a real consideration. I have suggested they look at that, the volvo EX30, and maybe the long range MG4 (my dad always said he hated the look of he tesla model 3 so that was out, however am not sure what he will make of the new facelift. personally i think externally its a big improvement on the visuals..

however i think after discussing it they are gonna stick with what they have for another year or 2.
 
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ICDP said:
I mean as a small cluster unit rather than an entire assembly. It would still be expensive but not £2400 like with the I-Pace
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pixcell/samsung ones as used in Model3 suspect you could replace board, but would first have to dismantle it, if it wasn't all destroyed in crash.

seems leds in bmw weren't always a performance upgrade -
I think the colour quality CRI in xenons is better too, leds look harsh with the blue peaks (whether you could grow grass with a led headlight ?)
Low Beam:
F30/31 LCI Standard LED: 784 lm
F30/31 LCI Adaptive LED: 1097 lm
F32 Xenon: 1170 lm
F32 Adaptive LED: 903 lm

High Beam:
F30/31 LCI Standard LED: 1226 lm
F30/31 LCI Adaptive LED: 1498 lm
F32 Xenon: 1702 lm
F32 Adaptive LED: 1802 lm
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jpaul said:
pixcell/samsung ones as used in Model3 suspect you could replace board, but would first have to dismantle it, if it wasn't all destroyed in crash.

seems leds in bmw weren't always a performance upgrade -
I think the colour quality CRI in xenons is better too, leds look harsh with the blue peaks (whether you could grow grass with a led headlight ?)
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The whole reason a lot of LED headlamps are being taken is for weed growing farms.
 
haven't seen my first id7 yet - but if consumers are genuinely concerned about range then non-aero / big-frontal SUV's like tavascan aren't on the true path.
will both share the same drivetrain too, I thought, which should crystallize the decision. daddy or chips

I obviously have the wrong vocation - efficient grow lights need more reds - maybe plants will evolve though, for led's deviant light spectrum

e: https://pubs.sciepub.com/wjce/6/1/6/index.html#Figure4
fig4.png
 
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jpaul said:
pixcell/samsung ones as used in Model3 suspect you could replace board, but would first have to dismantle it, if it wasn't all destroyed in crash.

seems leds in bmw weren't always a performance upgrade -
I think the colour quality CRI in xenons is better too, leds look harsh with the blue peaks (whether you could grow grass with a led headlight ?)
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Yea the high "temperature" LEDs have a lot of blue light, which is counterproductive.

Not sure it's that useful for plants either. The percentage of blue light from these headlights put out is a lot more than the sun emits (25% vs over 30%).
 
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Nasher said:
Yea the high "temperature" LEDs have a lot of blue light, which is counterproductive.

Not sure it's that useful for plants either. The percentage of blue light from these headlights put out is a lot more than the sun emits (25% vs over 30%).
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Plants are green because they don't make much use of the green bit of the spectrum - neither Chlorophyll A nor B absorb it well - but they can make good use of both the blue and red ends of the spectrum. Looking at the LED spectrum above the problem isn't the blue peak; it's that the other major peak is right in the middle of the region that plants won't make much use of.

Mostly plants just need a lot of light, and while car LED lamps might not be perfectly tuned, I can't see a reason they wouldn't work.
 
Mostly a mix of blue and red LED for indoor growers, which is why the indoor vertical farms have a purple look.
 
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