BMW i4 M50 overheats with restricted power and charging during 1000 km challenge

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UncleDave

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28.5C outside - power cut to less than half and charging speed nosedived.
Bjorn said the I3 does the same thing.
Electric HVAC seems to be the issue with many brands, you can either cool the cabin or cool the batts.

Still turned a decent time, but what a drag.

The other thing Im surprised it doesn't do is compute your expected SOC at the destination you set.

 
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28.5C outside - power cut to less than half and charging speed nosedived.
Bjorn said the I3 does the same thing.
Electric HVAC seems to be the issue with many brands, you can either cool the cabin or cool the batts.
It's not just BMW. This is the problem with these things in extreme temperatures. Be they hot or cold. When they build their "charging network" out here in the desert, they better provide plenty of motels to go along with them. (Especially if they think 83 degrees is "hot").
 
So this thing drives 620 miles on $66? At todays prices that is an improvement but at last years fuel prices that is not great. I still think this electric car adaption is a huge error in human history.

I'm in the jury still out camp. Many facets sure do seem to lead toward this platform not meeting the level of performance and/or level of positive effect for carbon neutrality. I can't speak to the veracity of the below TED Talk; if the speaker's data and conclusions are valid we have been misled down a path to literally move billions of dollars from one industry into another. Many politicians will see a windfall $$ in their investments.

I'm not saying this is accurate and true but we can still draw a logical inference. When Hillary was head of the State Department and Billy was getting 200-500k for "speeches" their close associate (Canadian billionaire mining investor) was close behind buying massive mining operations in Uzbekistan, Tajikistan, etc... The end product sought were materials necessary for EV's. No fact to say there was a coordinated effort but there is enough for me to question when I'm told new math is 2+2=5.

For those of you who end up watching the linked TED Talk, the conclusion, if valid, is shocking.

 
So this thing drives 620 miles on $66? At todays prices that is an improvement but at last years fuel prices that is not great. I still think this electric car adaption is a huge error in human history.
Depends. Most people here are moving to solar. Solar companies are booked 2-3 months in advance.
 
I wonder how much overall battery life is shortened running overheated like that.
Even at todays diesel prices I can still drive my MKIV 1.9 ALH that distance for $55 and recharge it in 3 min.
 
I'm in the jury still out camp. Many facets sure do seem to lead toward this platform not meeting the level of performance and/or level of positive effect for carbon neutrality. I can't speak to the veracity of the below TED Talk; if the speaker's data and conclusions are valid we have been misled down a path to literally move billions of dollars from one industry into another. Many politicians will see a windfall $$ in their investments.

I'm not saying this is accurate and true but we can still draw a logical inference. When Hillary was head of the State Department and Billy was getting 200-500k for "speeches" their close associate (Canadian billionaire mining investor) was close behind buying massive mining operations in Uzbekistan, Tajikistan, etc... The end product sought were materials necessary for EV's. No fact to say there was a coordinated effort but there is enough for me to question when I'm told new math is 2+2=5.

For those of you who end up watching the linked TED Talk, the conclusion, if valid, is shocking.


I'm pretty much in agreement with the TED talk conclusions, hybrids and plugin hybrid should be getting equal incentives to electric vehicles, as liquid fuels are pretty handy and shouldn't be eliminated for quite a while yet, or not at all in some cases.
Combustion engines are getting more efficient, but batteries for electric vehicles should probably get most of the automotive R&D dollars moving forward. Most of us don't do that many miles a day and I think a lot of range issues have solutions possible with todays technology, or perhaps with another small step forward.

As the for "marketing" or promoting of EV's as zero emissions , I think there is a tendency to assume the general public has a grade 4 science and math level, and can't read more than a paragraph, or listen to a 20 second sound bite on an issue...
So I guess if you had to boil it down to that level,

EV's GOOD! (and will be in a decade or two with better batteries and more nuclear and renewable energy)
Fossil fuel cars BAD...

TBH, I think most of our planets technical and social challenges, need nuanced responses, but lots of people like to make a decision on an issue with 3 sentences of knowledge... Or enjoy their right to be ignorant on issues but still have a strong opinions on them, just based on their gut feel, or something their drunk uncle says...
 
Depends. Most people here are moving to solar. Solar companies are booked 2-3 months in advance.

Interested to see what that % is in another decade. Colorado is a best case scenario with historically over 300 days a year of sunshine. The numbers for 2022 don't quite show anything to call exemplary. Nearly 7 million (documented) live in CO and only 4% are using solar. 2022 Ranking is 14th of the 50 states. Only about 80k homes are included in that 4% as the Comanche Solar Project is the big solar provider. With a super saturated solar industry in CO (over 350 companies who name their primary business as solar related) I'd think the % would be higher.

Me and my own opinion is gov't is in the way and not leading to the proper end result. Gov't is propping up the overall revenue side but in a manner to guide winners and losers in profit, not saving the environment which makes me question the end game. This could truly be such an easy one for both political parties to work together on. You own a home? You install a legitimate solar system, we provide you a tax incentive for a decade. The point is this one could easily be equitable and long term results are easily measured.

I'm in NY and have excellent exposure for solar. Large roof that is mostly unobstructed with sunshine from sunrise to about 4pm in summer. In NY the bureaucratic red tape is on the difficult side to navigate. I'll leave it at that.
 
Not sure about other's, but my Hybrid Ionic was getting in the low 50's mpg during the winter months here in S. Florida. In the summertime, it nosedived to 38!
 
On average, there are 164 sunny days per year in Akron(OH).
The US average is 205 sunny days. Akron gets some kind of precipitation, on average, 142 days per year.
Of course even here if I had some solar shingles and it wasnt 48505 dollars a system might make sense.
(except I have a massive maple that shades the house 1/2 the day)
 
28.5C outside - power cut to less than half and charging speed nosedived.
Bjorn said the I3 does the same thing.
Electric HVAC seems to be the issue with many brands, you can either cool the cabin or cool the batts.

Still turned a decent time, but what a drag.

The other thing Im surprised it doesn't do is compute your expected SOC at the destination you set.


I wonder what sort of cooling system BMW is using in these cars. Tesla uses a heat pump in at least one of their vehicles. I would think the heat pump is much more efficient.
 
I wonder what sort of cooling system BMW is using in these cars. Tesla uses a heat pump in at least one of their vehicles. I would think the heat pump is much more efficient.

I dont think its a matter of a heat pump or not, but more one of proportional valving between the two areas requiring cooling and battery type.

I think teslas octovalve thing comes into play In that it can proportion the cooling between the cabin and battery better
It seems that large pouch/prism cells have cooling issues and that they are looking to switch to cylinder batteries.

https://www.greencarreports.com/new...cylindrical-battery-cells-next-generation-evs
 
Just one big hail storm.
Actually, solar panels are very durable and hail damage is rare. As you might imagine, weather conditions were included in development.
There are many articles that speak to wind and hail weather.
I believe mine are guaranteed up to 150 mph wind and hail damage; I would have to look it up. But this is one of the many questions I had before investing in a solar project.
 
I wonder if this is similar to the Ford Mach-E power issues?
Tesla is far ahead of everyone in EV development; clearly their engineering is superior.
The big boys will still have their loyalists to bouy them up, but real world use is showing companies like GM, Ford, Porsche Audi and BMW are having EV related problems.
 
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