[Mr. K]

oh- and there is a you tube video online about what is inside once of these

it is a bunch of AA batteries (like 18 of them, I think)

they cut one open and show it

[eartrumpet]

oh- and there is a you tube video online about what is inside once of these it is a bunch of AA batteries (like 18 of them, I think) they cut one open and show it

This is my favorite video showing what's inside: http://www.youtube.com/watch?v=TBQDGvhr3kE

[Arrowhead1952]

it is a bunch of AA batteries (like 18 of them, I think)

Not all are built like that. I saw that video, cut a discharged one open and there were four cells inside that were about 1.25" in diameter.