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It seems that beating Tesla in range game is quite easy[1] I think BMW or Audi don't do that simply because they do not care enough - they optimize for differen

by mamon 7y ago

It seems that beating Tesla in range game is quite easy[1] I think BMW or Audi don't do that simply because they do not care enough - they optimize for different use case, i.e. daily commute, not 1500 miles road trips. [1] https://electrek.co/2018/09/07/bmw-i3-100-kwh-battery-pack-lion-smart/ https://electrek.co/2018/09/07/bmw-i3-100-kwh-battery-pack-l...

sliken 7y ago
Not sure how much faith I have in a 3rd party modified i3 that has a claimed (but untested) range of 435 miles. After all you can take a regular Tesla model 3 and drive 1000km if you are hyper miling. The main problem is unlike ICE cars that generally have so much wasted energy that temperature, speed, terrain, and driving style do not have a particularly large impact on range. In comparison electric cars are so efficient that elevation changes, cold temperatures, and running the AC or heater can make big differences. In particular speed can make a huge difference. A model 3 with a 300 or so mile range can go over 600 miles when hyper miling. To help with that the community consensus is to take all range estimates with a grain of salt until you see the EPA range. Said claimed 435 mile range was not tested by the EPA. Keep in mind that the battery packs Audi e-tron is using is as almost the same size (95 kw vs 100 kw), but is providing radically less range (208 miles vs 370). So clearly the Tesla is crazy more efficient. Given the expense and weight of the batteries, clearly Audi would have made a more efficient car... if they could.
slg 7y ago
I don't think you have any basis to say it is "quite easy" based off that article. You obviously can just keep throwing more batteries in a car, but can you do it at a reasonable cost while also making it safe and keeping the heat in check to maximize charging speed and the life of the battery like Tesla does?

by mamon 7y ago

sliken 7y ago

Not sure how much faith I have in a 3rd party modified i3 that has a claimed (but untested) range of 435 miles. After all you can take a regular Tesla model 3 and drive 1000km if you are hyper miling. The main problem is unlike ICE cars that generally have so much wasted energy that temperature, speed, terrain, and driving style do not have a particularly large impact on range. In comparison electric cars are so efficient that elevation changes, cold temperatures, and running the AC or heater can make big differences. In particular speed can make a huge difference. A model 3 with a 300 or so mile range can go over 600 miles when hyper miling. To help with that the community consensus is to take all range estimates with a grain of salt until you see the EPA range. Said claimed 435 mile range was not tested by the EPA. Keep in mind that the battery packs Audi e-tron is using is as almost the same size (95 kw vs 100 kw), but is providing radically less range (208 miles vs 370). So clearly the Tesla is crazy more efficient. Given the expense and weight of the batteries, clearly Audi would have made a more efficient car... if they could.

slg 7y ago

I don't think you have any basis to say it is "quite easy" based off that article. You obviously can just keep throwing more batteries in a car, but can you do it at a reasonable cost while also making it safe and keeping the heat in check to maximize charging speed and the life of the battery like Tesla does?