Reheat the iOpener in the microwave for one minute.
Remember to be careful not to overheat the iOpener during the repair procedure. Wait at least two minutes before reheating the iOpener, and never microwave it for more than one minute.
Place the heated iOpener on the back of the iPad just right of center (the side opposite the rear facing camera). Let it sit there for 90 seconds to soften the battery adhesive.
Move the iOpener to the center of the back of the iPad and let the iOpener sit for another 90 seconds.
If the iOpener cools significantly between sittings, reheat it for another minute.
Move the iOpener to the left edge (the side with the rear facing camera) of the back of the iPad and let the iOpener sit for another 90 seconds.
Throughout the following procedure, you'll be sliding thin plastic cards between the battery and rear case of the iPad, to separate the adhesive securing the battery in place. Be careful to keep the cards as flat as possible to avoid bending the battery, which may damage it and cause it to release dangerous chemicals.
Flip the iPad back over and insert a plastic card between the bottom battery cell and the rear case.
If you encounter significant resistance, re-heat the iOpener and repeat the previous step to give the adhesive more time to soften.
Starting with the battery cell closest to the dock connector, run a plastic opening tool underneath the edge of the battery closest to the logic board void to make enough room to insert a plastic card.
Time to tackle that center battery cell. By now, the adhesive may have cooled a bit; another application of the iOpener might be helpful at this point.
Slide the card under the center cell near the cable.