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From what I've been hearing, the battery life seems pretty good. That alone might be reason for an upgrade.

This guy, Mike Wendland, got 16 hours out of his.

The music part of the iPod works much the same as the other models, except for one important improvement: battery life. Apple says you can now get 15 hours worth of nonstop music play from iPod Photo. I started my review unit playing about 7 a.m. Saturday. It petered out a little after 11 p.m., close enough to the 15-hour mark for me.

This was posted on MacBytes a little while ago.
http://www.freep.com/money/tech/mwendland2e_20041102.htm

Squire
 
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