Prop the left side of the iPad up so the isopropyl alcohol can flow under the battery.

Apply a few drops of high-strength (>90%) isopropyl alcohol along the left edge of the battery.

Be careful if you're using a syringe with a needle or other sharp instrument to dispense isopropyl alcohol—a punctured battery may leak dangerous chemicals or cause a fire.

Let the alcohol soak for one minute to soften the adhesive under the battery.