I have the docking station, and I have been replacing the remote to the unit after every use. I briefly considered battery life, but have not thought much about it since. Are the NiMH batteries with the dock considered "smart" batteries, which are immuned to developing a "memory" from constantly being topped-off??? If not, and the solution is to let them almost drain before replacing the unit to the dock, then please let me know. Thx.