Fun! The theme was loose enough that you got some really unusual theme entries in. Also lots of diverse other fill!
Two opinions on clues:
I thought the clue for 46A was both overly helpful and misleading… the positive terminal is the anode (I used to think… but apparently it’s more complicated than I realized).
Just my opinion, but 20A (at least clued as such) fails the breakfast test for me.
Yeah that whole "battery" section was messing with me! I'm changing it, thank you for pointing it out. I appreciate that. I agree with 20A as well, I never do my crosswords at breakfast though, I'm torn :) Maybe it passes my new creation... the dinner test. haha. Thanks for filing it out...and fast time, nice. Thanks for the kind words as well, they're remembered!