Apply 1-2 drops of high-concentration (>90%) isopropyl alcohol under each corner of the battery and allow it to penetrate for several minutes to help weaken the adhesive.

The battery adhesive is designed to be loosened with isopropyl alcohol.

Using too much alcohol can damage the display.

Alternatively, prepare an iOpener and apply it directly to the battery for at least two minutes. Reheat and reapply the iOpener as needed.