[Scrotum]

I think it depends on how you are returning it. When I have gone through Asurion they told me to only send the phone back and I could keep the rest, including the battery. But when I did an upgrade/exchange through Sprint (Q to Mogul) They informed me everything needed to be included aside from the books and software. Also, yesterday I went into the store to pick up my new TP through Advanced Exchange and I asked if I could keep the battery, I was told they would have to charge for it. So it all comes down to how you are returning it. Its not worth getting your return denied just for a battery, because I doubt they would just charge for the battery.