Go to the podcast section on itunes and there is a vid podcast of guys taking apart an ipod nano (I have the vid saved on my HD). The procedure of opening up the nano and getting access to the battery looks really easy if you are not afraid to work on stuff, ie cars and electronics. It's called "systm" podcast and the segment is called, "cracking open the ipod nano". But yeah, ipod batteries are something apple discourages users from doing unless they are willing to pay for it (figuratively) if they **** up.