Just found a 1300 mah battery replacement for my iPod Mini. I'm curious how much more battery life it adds to the machine... I believe that stock was 400mah and rated for 18 hours of battery life on a Microdrive. Well I've replaced the Microdrive with an 8gb CF card and when I get the new battery I'm wondering how many hours I'd get now. Has anyone tried out the 1300 mah battery or have a similar set up to what I'm about to have? Tell me about how it's working out for you.