I just finished this process using the battery replacement kit from ifixit and it went easily. I did NOT remove the entire screen but rather just had someone hold it at less than a 90 degree angle until I got the battery out. I found it took a while to slowly pry the battery out. Take your time and alternate between gently using the plastic tool and pulling on the plastic pull tab that says "for authorized use only" or something like that. It was MUCH easier than disconnecting the entire screen for the process. Hope this helps.
Page 1 of 2