Link of The Day - Batteries & Media

Small Article about a technique to keep track of which batteries are ampty and which are full.  The really onlyworks for LPE6 batteries.The idea is ok, but
I think there are some good ideas in the comments too,  for other batteries & memory  cards
http://dslrvideoshooter.com/how-to-keep-track-of-your-battery-levels/