I have just split open a pair of nine-volt batteries in order to harvest the goodness of the AAAA's nestled inside!

That plus one of the internal flatwires that connected all of them, and I have 12 batteries for my little BT headset! :D

AAAA batteries in a pair are normally around six dollars. I bought the package of two nine-volt batteries for that price and got six times as many!

XD I always love science, but it's times like these that I lurrrrrrve t3h sc13nCe!