XPost: alt.energy.automobile, rec.autos.driving, alt.fan.rush-limbaugh   
   XPost: talk.politics.guns, sac.politics, alt.global-warming   
   From: democrat-criminals@mail.house.gov   
      
   https://jalopnik.com/its-too-hot-for-evs-to-work-right-1850663950   
      
   The heat wave affecting much of the U.S. may be causing electric vehicles   
   to lose nearly a third of their range.   
      
   We already knew electric vehicles don’t do so well when it gets really   
   cold outside. Well, apparently they don’t really like extreme heat either.   
   According to Automotive News, the recent heat wave across much of the   
   Southern and Western U.S. has brought their range issue to the forefront.   
      
   A Seattle-based EV battery and range analytics company called Recurrent   
   has reportedly tested thousands of vehicles in various weather conditions.   
   It found that many vehicles experienced “significant declines” in their   
   range as temperatures rose. Some apparently suffered a 31 percent drop   
   when temps got about 100 degrees Fahrenheit. That is less than ideal. At   
   cooler temperatures, the outlet reports that the range loss wasn’t as   
   high. There was an average of 5 percent reduction at 90 degrees and 2.8   
   percent at 80, so it’s definitely not linear.   
      
   Auto News says that in order to calculate these average temperatures,   
   Recurrent used a blend of data from the 17,000 vehicles the company keeps   
   track of. This data includes 65 EVs and plug-in hybrid models that include   
   mainstays like Tesla’s entire lineup, the Chevy Bolt EV, Hyundai Konda,   
   Nissan Leaf, Ford F-150 Lightning and Mustang Mach-E.   
      
   Unfortunately, we don’t know which models did the worst in terms of range   
   loss. However, Recurrent did say that all four of Tesla’s vehicles had the   
   smallest range degradation, but they also had the widest gap between their   
   real-world range and the EPA’s estimates. Part of the reason for their   
   resistance to range loss may be because of their heat pumps, Recurrent’s   
   CEO Scott Case told AutoNews. They’re apparently much more efficient at   
   cooling than standard automotive air conditioners.   
      
   The outlet also spoke with Greg Less, the technical director of the   
   University of Michigan Battery Lab. He explained that range decline from   
   heat has its roots in battery chemistry.   
      
   “Once you’re above [104 degrees Fahrenheit] you start to have a breakdown   
   of the passive emission layer on the anode, and that breakdown will then   
   cause consumption of the liquid electrolyte, which will shorten the   
   lifetime of your battery,” Less told the outlet.   
      
   Luckily for EV owners, he doesn’t think the excessive heat will damage EV   
   batteries long term. That’s because they aren’t always driven in 100+   
   degree weather, and EVs have a fairly robust system to cool batteries.   
      
   From what Less says, it sounds like high temperatures aren’t the direct   
   cause of range degradation. It’s got more to do with the fact they use   
   more electricity to run stuff in that sort of weather.   
      
   “You’re running the fan harder, you’re running the refrigerant faster. All   
   of these things take more electricity,” Less said to Auto News. “So that’s   
   going to reduce the range.”   
      
      
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