Poked a battery on the side

Struggled to remove this battery even after heating it up it just wasn't moving. Made a dumb move to use the metal spudger as a last resort and managed to poke through it, there was a tiny spark. What would be your next move with this, what's safe to do at this point? I'm thinking this isn't the standard Samsung glue under, what would happen if I were to plug it in for the sake of testing?

Struggled to remove this battery even after heating it up it just wasn't moving. Made a dumb move to use the metal spudger as a last resort and managed to poke through it, there was a tiny spark. What would be your next move with this, what's safe to do at this point? I'm thinking this isn't the standard Samsung glue under, what would happen if I were to plug it in for the sake of testing?