How/where do you store a Sony Camcorder info lithium battery? Should it be fully charged or not?

I have a Sony Camcorder and wish to preserve the battery for as long as possible. Should I let it completely run down before storing it, or store it fully charged? And should I simply place it in a dark place, not attached to the camera?|||i have had to store info lithium batteries for sony camcorders and cameras for several years with no special attention. they should be charged and put individually in plastic sandwich ziplock baggies. this protects them environmentally and prevents shorts. When you put the camcorder back in service, remember you will need to set the clock and any other pre-sets. On my miniDV that means changing the audio from 12 bit to 16 bit mode.|||Always store a battery fully charged. And remove it from the device. Never store a battery in something and never put something aside for an extended period with a battery in it.