one of two ways , if discharged to zero you can toss it in the garbage but what i do is dump it in a bucket of salt water for a week then take it to a best buy or home depot they accept old LI PO batteriesAfter being fully discharged, yes. Google "how to dispose of a lithium polymer battery".
dump it don't mess with it nothing to gain it's N G . unless it's still under warrenteeCan I consider the battery as "waste"?