I think you'd better verify that information with Winston before telling people this. Please do share a data sheet that tells us this.I believe the only cells capable of below 0C charging are Winston LiFeYPO4 cells the yttrium gives them a wider range.
But they are more expensive
Certainly the specs they post seem to imply this:
But they wouldn't be the first battery manufacturer to publish incorrect temperature data.
I seriously doubt they can be charged at -45 degrees Celsius especially since they say "WATER-BASED lithium yttrium power battery".
Perhaps yttrium is an anti-freeze that also magically does away with the lithium plating at low temperatures?