anyone know what battery life is like?

this might go well with the wii i'm going to win today. all it is in an infrared light that covers more range than the one that the wii comes with. the wii-motes are what actually sends a signal. the "sensor bar" does nothing more than send out light. the reviews on amazon are favorable, but i didn't see anything about battery life.

I have one of these. It works, but the range on mine is a little less than the wired Nintendo bar. May just be the layout where we used it, but we had to move 2-3 feet closer to the TV when using the wireless bar than when using the bar that came with the Wii. Can't comment on battery life, as over a week-end of play we didn't run down the batteries and haven't used it since.

I have one of these(probably different brand)---no noticeable range benefit; PITA to change batteries,to remember to turn on and off and battery life was not very long (between 10 and 20 hours). Plus, Nintendo alluded to not honoring the Wii warranty if they knew a wireless sensor bar was being used.

#4, I really doubt this could do any harm since it's just a light source, let alone that nintendo can tell if one was ever used. That would be like them refusing warranty because you had your stereo playing while the wii was on. Still might be garbage though.

#5---If you can't buy it from Nintendo, they don't want you using it.

This is to do chin ups with your Wii.