I'd like a reference on that because it seems completely implausible, and would make recycling almost anything impossible because glue is used everywhere, on tape bits to hold cables in place etc.
And if the batteries has to be glue free, then practically all laptop and cell phone batteries can't be recycled because the plastic battery case is glued together.
OK, that's more understandable, since I guess that glue has to be pretty solid and has to cover the entire surface. And that's also bad from a servicability perspective (have to buy the entire display assembly).
And if the batteries has to be glue free, then practically all laptop and cell phone batteries can't be recycled because the plastic battery case is glued together.