I should have noted the difficulty rating before thinking I could replace the battery myself. I could have saved myself the cost of replacing a cracked screen, which happened when I attempted this step. I did not want to overheat the iOpener but consequently, I could not get a pick inserted underneath the screen. (I think the glue must take a lot more heat than expected to melt.) So just a warning to more novice tinkerers—this repair wasn't the same as fiddling with screwdrivers and a million small parts.