No, that's fine! I don't need it all right now, and it's a misleading number anyway. I'm feeling some things at about seventy eight percent, and other things I'm... not really feeling at all! So it's an overall number.

[The way he dismisses the idea of willingly taking those sorts of feelings back is something he doesn't dwell on, or anticipate how it might make Sans feel. The fact that he can quantify his emotions, that he's been quantifying them for some time without saying so, can also go without pointing out.]

A few car batteries, and I'm sure I'll be set for ages. Excluding any unpredictable weirdness, which there's really no preparing for, so no use worrying about it.