hello.. I have a question for you guys. when you store a nimh battery pack do you leave a little charge in it or fully charge it?

Unlike Lithium cells, the level of charge in a NiCd or NiMH battery has little effect apon storage duration.

You can read the details at [link=http://www.batteryuniversity.com/partone-19.htm]The Battery University[/link].

better to try to keep it fully charged, or at least with some charge in it, never empty.

I like to store mine re-charged so it does not take as long to top them off when I fly. Either way is alright.