Our first electric road trip
Thread Starter
Racer
Joined: Oct 2014
Posts: 281
Likes: 217
From: Avon, CO
that 300 mile number only works if you can do that 300 at 80mph in cold weather. My Turbo is 300 range, but at 80 mph it’s more like 185…
Rennlist Member
Joined: Feb 2009
Posts: 5,312
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From: Newport Beach, CA and Melbourne, Australia
Indeed, the real world impact of aerodynamic drag. Of course the quid-pro-quo is how much more efficient EV's are around town than ICE vehicles.
Advanced
Joined: Aug 2012
Posts: 74
Likes: 19
Nah - technology will continue to improve and I would expect any EV to be successful will have get 400 of real world driving range and much faster charging. Otherwise will just fail at least in NA. I expect that and my Model S LR gets decent range, but still needs much better range when traveling or business trips traveling. Expect that in an ICE car and so do most Americans, so expect in an an EV too.
Drifting
Joined: Feb 2016
Posts: 2,098
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The new BMW i3 is going to be there I think. Looks like 108kWh usable capacity. Assuming a conservative 3.0 miles per kWh at constant highway speeds (though my 2023 Polestar2 does about 3.3), that's over 300 miles of highway range at 70-75mph being conservative. It's on an 800V architecture and will charge at 400kW peak.
Three Wheelin'
Joined: Mar 2004
Posts: 1,447
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The new BMW i3 is going to be there I think. Looks like 108kWh usable capacity. Assuming a conservative 3.0 miles per kWh at constant highway speeds (though my 2023 Polestar2 does about 3.3), that's over 300 miles of highway range at 70-75mph being conservative. It's on an 800V architecture and will charge at 400kW peak.
Drifting
Joined: Feb 2016
Posts: 2,098
Likes: 745
F...... Chinese are crushing everyone. This BYD maxed out the Alpitronic HYC400 at 400kW from 3%-92% state of charge. Yes, it was pulling 400kW at 92%. There was some other test where, on a megawatt charger, it went from 10%-97% in 9 minutes on a BYD flash charger.
Nordschleife Master
Joined: Jun 2011
Posts: 6,521
Likes: 4,945
From: Santa Cruz, CA
F...... Chinese are crushing everyone. This BYD maxed out the Alpitronic HYC400 at 400kW from 3%-92% state of charge. Yes, it was pulling 400kW at 92%. There was some other test where, on a megawatt charger, it went from 10%-97% in 9 minutes on a BYD flash charger.
https://youtu.be/PS0R_8ph1R8?si=G4HASSPuKFHwiAUT
https://youtu.be/PS0R_8ph1R8?si=G4HASSPuKFHwiAUT
a good friend of mine is a battery engineer - he told me years ago you can do _ANYTHING_ you want to a LiON battery cell and it will mostly work - but for how long? you can over charge them, you can over discharge them, you can do all sorts of things to them - but you'll kill their longevity…
now I'm not saying that BYD hasn't worked this out - I'm just saying our Macan's could flat-line charge at 270 kW if Porsche software would let them - but what the impact of that would be on the cell's longevity is unknown…
the charging taper curves we're all used to are SWAGs (scientific wild *** guess's) that the enigneers feel comfortable allowing in that it will not degrade the battery it will make it through the warranty period if you treat the battery as dictacted by the battery management software parameters…
none of these charging limits are physically enforced/prevented by the battery cells themselves - they are all software limits meant to manage the battery's overall life cycle…and not damage the LiON cells with undue stress…
I'm wondering what these fast charging scenario's/demonstrations are doing to the overall health of hte batteries and how long they expect them to last under such charging loads…
I've seen a LOT of fast charging demonstrations, but very little conversation about expected longevity - but maybe they've worked it out…
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Rennlist Member
Joined: Feb 2009
Posts: 5,312
Likes: 3,718
From: Newport Beach, CA and Melbourne, Australia
Drifting
Joined: Feb 2016
Posts: 2,098
Likes: 745
yes they are - the question is battery longevity…
a good friend of mine is a battery engineer - he told me years ago you can do _ANYTHING_ you want to a LiON battery cell and it will mostly work - but for how long? you can over charge them, you can over discharge them, you can do all sorts of things to them - but you'll kill their longevity…
now I'm not saying that BYD hasn't worked this out - I'm just saying our Macan's could flat-line charge at 270 kW if Porsche software would let them - but what the impact of that would be on the cell's longevity is unknown…
the charging taper curves we're all used to are SWAGs (scientific wild *** guess's) that the enigneers feel comfortable allowing in that it will not degrade the battery it will make it through the warranty period if you treat the battery as dictacted by the battery management software parameters…
none of these charging limits are physically enforced/prevented by the battery cells themselves - they are all software limits meant to manage the battery's overall life cycle…and not damage the LiON cells with undue stress…
I'm wondering what these fast charging scenario's/demonstrations are doing to the overall health of hte batteries and how long they expect them to last under such charging loads…
I've seen a LOT of fast charging demonstrations, but very little conversation about expected longevity - but maybe they've worked it out…
a good friend of mine is a battery engineer - he told me years ago you can do _ANYTHING_ you want to a LiON battery cell and it will mostly work - but for how long? you can over charge them, you can over discharge them, you can do all sorts of things to them - but you'll kill their longevity…
now I'm not saying that BYD hasn't worked this out - I'm just saying our Macan's could flat-line charge at 270 kW if Porsche software would let them - but what the impact of that would be on the cell's longevity is unknown…
the charging taper curves we're all used to are SWAGs (scientific wild *** guess's) that the enigneers feel comfortable allowing in that it will not degrade the battery it will make it through the warranty period if you treat the battery as dictacted by the battery management software parameters…
none of these charging limits are physically enforced/prevented by the battery cells themselves - they are all software limits meant to manage the battery's overall life cycle…and not damage the LiON cells with undue stress…
I'm wondering what these fast charging scenario's/demonstrations are doing to the overall health of hte batteries and how long they expect them to last under such charging loads…
I've seen a LOT of fast charging demonstrations, but very little conversation about expected longevity - but maybe they've worked it out…
Advanced
Joined: Aug 2012
Posts: 74
Likes: 19
F...... Chinese are crushing everyone. This BYD maxed out the Alpitronic HYC400 at 400kW from 3%-92% state of charge. Yes, it was pulling 400kW at 92%. There was some other test where, on a megawatt charger, it went from 10%-97% in 9 minutes on a BYD flash charger.
https://youtu.be/PS0R_8ph1R8?si=G4HASSPuKFHwiAUT
https://youtu.be/PS0R_8ph1R8?si=G4HASSPuKFHwiAUT
Rennlist Member
Joined: Feb 2009
Posts: 5,312
Likes: 3,718
From: Newport Beach, CA and Melbourne, Australia
Absolutely have zero interest on any Chinese car. Would never trust them long term and definitely would not trust them with all the computers on board just sucking away at our data and intelligence. I just don't understand the people that hype Chinese cars. Just foolish. I am all in for keeping them out of the US and wish other Countries would be smart enough to do the same. Why do you think China is giving them away?
Last edited by aggie57; Jun 1, 2026 at 03:56 PM.
Drifting
Joined: Feb 2016
Posts: 2,098
Likes: 745
Absolutely have zero interest on any Chinese car. Would never trust them long term and definitely would not trust them with all the computers on board just sucking away at our data and intelligence. I just don't understand the people that hype Chinese cars. Just foolish. I am all in for keeping them out of the US and wish other Countries would be smart enough to do the same. Why do you think China is giving them away?
I WILL say that products assembled in China are better put together than products assembled in the US on average. I've worked in US factories and the level of zero ****s and lack of quality is truly depressing. How many of you have taken a car to a dealership or any shop, or plumber, or HVAC repair, and complained about the lack of quality workmanship? I do nearly all my own work because I don't trust any dealership tech based on numerous negative experiences.
Advanced
Joined: Aug 2012
Posts: 74
Likes: 19
A Chinese car with Chinese electronics is much different. And I don’t fill my house with Chinese products. I go out of my way to not buy them, but yes many times it can’t be helped. Just ignorance if you buy a Chinese car though. Plenty of other great Euro and US cars that people can buy. I just don’t get people’s fascination like that and they obviously have no clue on what the Chinese are doing with their data from these cars either.