I was messing around and removing a case from a Li Po battery in a PS4 controller. I messed up and cut the corner. The battery looks and feels stable, no heat is eminating from it and no fumes are being put off. Should I dispose of it or is it fine to keep? It was a tiny scratch/cut in the farthest corner and there was just a small spark when I punctured it. I know this is a kind of dumb question but I wanted to make sure.