Right below this thread is one concerning chargers, where the topic of hot chargers and safety came up. I'd suggest reading
my post that covers the topic pretty thoroughly
It was, in fact, V1, your thread that prompted me to post as I did. Not withstanding data indicating "not to worry", I'll try be to prudently paranoid and keep my tool cool (a term I've not used in a great many years).
BTW, your tutorial was very helpful. Many thanks!