32 AA Batteries For Only $4-5!

6 Volt Battery Hack! You'll Be Amazed! - video powered by Metacafe

More Tips on saving money on batteries. I was completely amazed when I saw this! Incredible.

Not as impressive, but still awesome:
8 watch batteries from a 12 volt battery.



12 Volt Battery Hack! You'll Be Surprised... - video powered by Metacafe

And, there are 6 AAA batteries in a 9 volt battery. No video for that though

I saw these posted on lifehacker, an excellent website. :)

EDIT: just a note of realization that the first video with the AAs could quite possiblt and probably be a joke. a somewhat off sense of humor. :)