[Ben]

Have a little AA battery in my little clock next to me I got for being employee of the month of few months ago. I know it's only ~1.5 volts and the bulb is supposed to work on 12 volts, but I thought I'd test her out. Well had to take the bulb out and look closely at the filament. It turned barely orange. So it works!

Hey, I just realized I have ANOTHER AA battery in my pager in my bag! Test results in a few...

 

[Ben]

MUCH brighter with ~3.0 volts! You can see the filament glow a decent orange from an ok distance! Doesn't produce any usable light though...