That would be awesome Darrell!

I have something working now using a 1N914 diode from the pin to ground and a 10K to plus from the pin. Sorta using the diode as a reference. But it's depending on the diode drop which may not be accurate in production.

A no-pin solution would be a better design. Have you posted this idea to the forum in the past? If not I'm sure that many of us that design battery powered products would benefit from your genius!