WiiMotes disconect on it own

[DaBonesDone]

Hello,

I have some issues using my WiiMotes.
From time to time the controllers disconnect by themselfes. For example after half an hour playing without any trouble one of my two WiiMotes disconect and i have to restart everything to get the controller back to work. Have anyone an idea how i can fix this?

Thanks, DaBonesDone