I guess the wiimote charging dock come with a battery compartment and rechargeble batteries specificlly for the wii when you put on the special battery compartment it has built in slots that easily get connected.
yer my friend has got the rechargable battery thingy, it comes with two battery packs that replace the batteries and battery cover. then on the back of the cover there is 2 copper pads so when you put the remote in the holder it charges the battery up through these
How about a bluetooth keyboard? We already have the internal hardware, so all it would need is a simple driver to assign onscreen keys to the bluetooth one! The real question is- should it be a Nintendo offical only one (with home button etc)- or any bluetooth keyboard (more drivers needed)... Or both... Hmmmmm