The iFixit battery replacement kit worked great! The repair guide is very good also. So glad I didn’t just try buying the battery. While testing everything after finishing the battery replacement, the digitizer, volume controls and the sleep button did not work. I was very happy when I went back in and found the cable connections had just come loose. My wife couldn’t believe I fixed her iPad.
I could not get the iOpener hot enough to melt the glue on my ipad 6. I heated for 45 seconds once and it was boiling and it still never worked. Thank goodness contributors mentioned using a hair dryer. Using an 1700w hair dryer on high did the trick to get the screen off. Still took some time and the case got pretty hot but be patient. It took twice as long and a lot more patience to get the battery out.