I'm still using my GH2's regularly and have a stack of batteries but I'm losing the plastic covers that go with them - I like to have the cover to assure me the battery is charged and ready. anyone know where I might get some?
I was looking for a few a while back, never did find them...
Not an elegant solution, but I keep a small roll of red electrical tape in the battery pouch and stick a strip over the contacts on my charged batteries.
Small ziplock bags work very well for keeping the contacts from metal. They do a good job of protecting the battery and the terminals should be covered with something even on a discharged Lithium Ion battery.