How much mercury?

Take a look at this battery and tell me how much mercury it has. Then do a double take, squint, and look at it again.
05.17.2006 by Josh Meyer | 10:36 am 
Take a look at this battery and tell me how much mercury it has. Then do a double take, squint, and look at it again.
05.17.2006 by Josh Meyer | 10:36 am3 Comments on “How much mercury?”
After the second step I realized that it has… 70% mercury??
OHHHHH…. wait, I now realize that the seven that i thought it was is actually a lighting bolt???
I think that I need to squint a little harder next time!!!!
Looks like 15% to me.