497
World's largest sodium-ion battery goes into operation - Energy Storage
(www.ess-news.com)
This is a most excellent place for technology news and articles.
Lithium batteries are often -30 to 80C, but that's just saying what's possible to squeeze some kind of voltage out of them. Basic principle is that the colder it is, the harder it is for chemical reactions to happen, and thus this will affect all chemical batteries to some degree.