Get a new battery and be sure that you follow the proper disposal of the old one asap. Keeping a LiPo that has gone below 3v per cell is not worth the risk.

See these links for more info. http://www.rcgroups.com/forums/showthread.php?t=209187

http://www.wattflyer.com/forums/arch...php/t-695.html

http://www.befa.ef-uk.net/data-files/LiPo-Safety.pdf

P.S. Don't feel bad about the battery. I ruined a NiMh batt just a few weeks ago myself.