Chosen Solution
I followed the tutorial to replace my iPhone SE (1sg gen) battery, and like for many others, only one of the strips of old adhesive came off clean, so I had to pry it out so I could weaken the rest of the adhesive with isopropyl alcohol and carefully get it out with a spudger. It bent a little bit in the process but I managed to make it flat again and it does not look damaged. Is it a bad idea to reuse it?
It’s definitely not as safe as the original one, but your mileage may vary. Most people kept using it without major issues.
Punch it flat put it in that’s what I would do its safe unless its torn open and you can see silver inside