I just use rechargable AAs, i already had some UNiROSS ones which were ok, they lasted about half the time of normal (energizer/duracel) cells, but obviously i could recharge them.
However i have recently got some UNiROSS hybrio batteries, which supposedly don't lose charge when you leave them around (normal rechargables discharge energy while not in use) and although i havent had them long enough to test that, i have had them long enough now to know they last longer in the Wiimote than normal AAs, i mean i got about 25 hours out of LoZ:TP on normal cells, (TP is the most power draining on the remote), but these last at a guess 10 hours longer than that before needing a recharge.








