https://www.greencarcongress.com/2020/11/20201114-moscow.html

Moscow now has the largest metropolitian electric bus fleet in Europe.  It uses Lithium titanate batteries, one of the very safest lithium ion batteries as far as thermal decomposition susceptability is concerned.  Lithium ion batteries are prone to lithium permanent plating on the anode at temperatures below freezing when charging is done, but the lithium titanate batteries being used in Moscow supposedly have a charging range of -40 degrees C. on the bottom end all the way up to +45 degrees C. on the top end (-40 degrees F. to +113 degrees F.).  This would be a remarkable performance criteria for these batteries and certainly more in tune with the extreme temps possible in the Winter time in Moscow.  I suspect Moscow never gets to that 113 degrees F. on the high end, but on the low end: The coldest temperature ever recorded in Moscow was −42.2 °C. It happened in January 1940.