I disassembled my smartphone, which required removing the (non-removable) battery. The battery was glued with double-sided adhesive tape to some housing on the board. Further, there was some 'metallic' sticker across the battery and a metallic component on the board.
In order to remove the battery, it had to be bended a bit due to the adhesive tape. Not much, but you could feel that there was some bending going on (few mm)*. Further, the bottom of the battery wrapping seemed to deformed a bit due to the tape. My question is if the battery potentially could have taken some damage due to the removal and might self-ignite, explode, whatever, when I keep using it.
I'm curious if that metallic sticker has some purpose, or if it just some seal. The sticker itself is quite thin, and I couldn't remove it without breaking/disconnecting the battery and the metallic component. I'd like to know if there might result some potential danger if I remove the sticker completely.
- *edit: Though the bending wasn't much, it was an elastic (rather than a plastic) deformation (battery went back to original shape after stress)
Attached two images showing the battery.