[lapetitejort]

There's been some recent developments with removing batteries glued to the device: use floss or some other thin string and saw through the glue. The string won't pierce the battery and can fit in tight spots.

[lesostep]

I remember same floss-hack used to work to replace a smartphone screen without replacing touchscreen

Oh how far we fallen

[Kankuro]

I used floss as indicated in ifixit comments, but the glue did not saw easily (I'm not dexterous).

[AussieWog93]

I usually just cut a "knife" out of a cereal box and saw back and forth.

[shawn_w]

That's clever.