HMMMM,

Maybe I dont understand?
If you need to mark a batt pack thats not in a plane, should be easy enough.
If it is in a plane, it should be wrapped in foam and secured someplace for ballast in the fuse.

I agree with FLYBOY, keep the active radio gear on trickle charge, remove it only when you fly, then, you know its charged, well, after you check the voltage to be certain youve not lost a cell.