EV general discussion

chanjy said:
You could argue the lack of engine noise and vibration makes an EV more relaxing to drive than an ICE
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Don even think they are factors tbh. The one I would agree with is comparing a manual ICE vs EV in terms of ‘relaxing’. Aka less effort
 
tamzzy said:
Stopped for a KFC :cry: motorway road noise isn't too dissimilar to my 440i subjectively
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Hope it was faster than last time I went for a 'quick' KFC at Exeter services, took them so long I overcharged the car massively, only ordered a wrap and a coffee.
 
Simon said:
But it’s now 130kg heavier

Think 80% is a bit safe anyway. 90% fine and 100% before a long trip

Why you worrying about saving the batteries max range when you aren’t even using it. Seems odd and the 77kW eboost needs 85% or more battery for max motor output. So it’s heavier and slower vs a 58 which only needs 55% or more for max power.
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Who said I wasn’t using it? Of course I use it because every single time I get in it I always get more range than the equivalent SoC of a 58kWh version. I also have the option of charging to 100% SoC and getting ~30% more range than I would get in a 58kWh.

As a two EV family we have to share a charger at home and a bigger battery means less charges per week and thus a much reduced chance we have a who needs the charger most conflict. :)

You keep applying your preferences and needs to other people. That’s not how it works. A bigger battery has objectively a lot more flexibility than a smaller one, this isn’t open to debate really.

A few other subjective points.

1. 130kg is nothing to me for the added benefit of the bigger battery.

2. For me a slight reduction in performance is worth it for the benefits of the bigger battery.

Finally a correction on your power claim. A The 77kWh eBoost does not need 85% to get max power. The power loss is actually linear and quite close to max even at 60% SoC.

eBoost requirements battery

eBoost requirements battery Faults and Technical chat for the CUPRA Born - CUPRA Born Forum
www.cuprabornforums.com
 
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ICDP said:
Who said I wasn’t using it? Of course I use it because every single time I get in it I always get more range than the equivalent SoC of a 58kWh version. I also have the option of charging to 100% SoC and getting ~30% more range than I would get in a 58kWh.

As a two EV family we have to share a charger at home and a bigger battery means less charges per week and thus a much reduced chance we have a who needs the charger most conflict. :)

You keep applying your preferences and needs to other people. That’s not how it works. A bigger battery has objectively a lot more flexibility than a smaller one, this isn’t open to debate really.

A few other subjective points.

1. 130kg is nothing to me for the added benefit of the bigger battery.

2. For me a slight reduction in performance is worth it for the benefits of the bigger battery.

Finally a correction on your power claim. A The 77kWh eBoost does not need 85% to get max power. The power loss is actually linear and quite close to max even at 60% SoC.

eBoost requirements battery

eBoost requirements battery Faults and Technical chat for the CUPRA Born - CUPRA Born Forum
www.cuprabornforums.com
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Well you just said you don’t go over 80% not me? Now you saying you use all of it. Apologies for my confusion and you are doing the same and it’s human nature. But it’s hard to keep up if you change your view.

This whole discussion came from a guy saying he’s doing a 320mile trip but was too scared to go over 80% battery rather than use all of it…

But I’m looking forward to a 79kWh battery for the regular long trips I do. And I will be using 100% anyway. And not have to top up at 70+p chargers. And it’s why I cancelled the 52kWh EV I had on order

That post is wrong. There is no way it’s doing 125kW at such low %. Driving the car will tell you that. So does the blue power meter. Even 100% vs 50% you can feel the difference. And at 30% the blue bar is at 90% of max. The batteries volts drop as you go down the SoC and the motors current is limited. So kW at battery doesn’t equal kW at motor. And ultimately VW themselves say it needs over 85%.

There’s plenty of 0-60 tests on many cars to show what many cars do. Rather than the obd data.

Extra 130kg makes it less nimble that’s for sure. At least you didn’t lose a rear seat I guess ?
 
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Simon said:
That post is wrong. There is no way it’s doing 125kW at such low %. Driving the car will tell you that. So does the blue power meter. Even 100% vs 50% you can feel the difference. And at 30% the blue bar is at 90% of max. The batteries volts drop as you go down the SoC and the motors current is limited. So kW at battery doesn’t equal kW at motor. And ultimately VW themselves say it needs over 85%.
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It isn't, not any more than your own post is wrong too, because BMS discharge limits are dynamic. The motor current limit isn’t true to be honest. These are AC motors powered by an inverter, the motor doesn't even see the battery voltage, so the motors power handling via current limits can't be affected by the battery voltage.

As for discharge limits, the limit at low load isn't the same as the discharge limit at high load, because once the voltage sags the BMS will shortly start to reign the discharge limit back down. So, you DO get the power, they aren't wrong and it's very easy to confirm that with an OBD reader, you just don't get it for long. I can see the blue bar being full even at 35% SoC and if you go 100% throttle it fills completely, and you see the reported battery discharge rate confirming that full power is supplied. But what you'll also see is after 2-3 seconds, the discharge limit gets pulled back and you no longer get full power. Do the same at >85% SoC then you'll have full power until something overheats.

Whether that matters depends. If you're doing an overtake then a few seconds is probably long enough with full power to get the job mostly done, but if you're doing a track day, or 0-60 pulls, then obviously the performance will be notably, and measurably, reduced.
 
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Simon said:
Well you just said you don’t go over 80% not me? Now you saying you use all of it. Apologies for my confusion and you are doing the same and it’s human nature. But it’s hard to keep up if you change your view.

This whole discussion came from a guy saying he’s doing a 320mile trip but was too scared to go over 80% battery rather than use all of it…

But I’m looking forward to a 79kWh battery for the regular long trips I do. And I will be using 100% anyway. And not have to top up at 70+p chargers. And it’s why I cancelled the 52kWh EV I had on order

That post is wrong. There is no way it’s doing 125kW at such low %. Driving the car will tell you that. So does the blue power meter. Even 100% vs 50% you can feel the difference. And at 30% the blue bar is at 90% of max. The batteries volts drop as you go down the SoC and the motors current is limited. So kW at battery doesn’t equal kW at motor. And ultimately VW themselves say it needs over 85%.

There’s plenty of 0-60 tests on many cars to show what many cars do. Rather than the obd data.

Extra 130kg makes it less nimble that’s for sure. At least you didn’t lose a rear seat I guess ?
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The power is not important to me, even the VZ I test drove felt tame compared to the I-Pace handed back in May. I remember the saleswoman being visibly annoyed when I called it “nice, but nothing special”. I rarely ever utilised the power of an I-Pace, so the 77kWh boost does me perfectly fine.

I posted the link to demonstrate the eboost 77kWh Born does not just drop to 150kW once the SoC goes below 85%. It is a linear drop rather than suddenly going from 170kW to 150kW.

I stated I use 80% for standard use and use 100% when needed for longer trips. I also don’t think 122kg over an already heavy car is hardly making a big difference.

Yes my Born is a 2023 with 4 seats and as a one child family (my son is 12) it is more than adequate, because the last time I had more than 4 people in my car was 2020.

I’m sorry to go on and on while taking this off topic, I’ve made my point that we all have different priorities when choosing our cars. My apologies for any confusion.
 
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We debate about these issues probably way out of proportion to their impact on batteries which mainly have calendar aging effects more than anything else but it’s still a heck of a lot more interesting than any papal nonsense anyway
 
Free charging today on agile. Car wasn’t full but even going for max charge (with warning I’d only hit 79% before 4pm ohme was doing 14:09 until 14.21. Odd as it was -1p so you’d thought it would use the full 30mins.

Ended up just manually overriding. Maybe ohme/octopus have to delay the charges to avoid a big surge at 2pm
 
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Junglist said:
Just the AWD model for this here peasant :p
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I went for the ultra peasant standard RWD version in stealth grey. Mainly because I’m tight and grudged paying the luxury car tax :p

But joking aside I had a test drive of the standard version for 4 hours and thought it was perfect for me. I know the LR AWD version has much more power and a better stereo, but as they say ignorance is bliss. The standard has plenty of power and the stereo is quite good.

Got a pickup date for the 6/9 but will be on holiday so managed to talk them into keeping it for 9 days until I get back. I still think it’s stupid Tesla will usually only hold a car for 7 days.
 
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I mostly wanted the AWD as it's a similar level to performance to my current car (on paper) but it was the audio that I really wanted. Had the AWD for 24 hours - though I only really drove it for maybe 3/4 hours at most. And put in a reservation the following morning.

As mine was so delayed I popped into my local dealership ~3 weeks after to ask about one of the ones they had available already and he told me to just wait and be patient but let me take a long range-RWD model for another 24 hours (probably 2-3 hours of actual driving).

I think the RWD is still a brilliant car. Still felt very quick and the audio system was still really good. I'd say it's better than the B&O one I have in my current car. I did have to have the volume slightly higher than I did in the AWD model and it didn't quite put a grin on my face the way the sound did in the AWD but the quality was still fantastic. Would've been interesting to drive and hear them back-to-back.
 
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