I came across this about HP battery's that are being recalled.
I don't know if your having issues with yours, but if you are - you can get another one for free.

http://bpr.hpordercenter.com/hbpr/
I don't know if your having issues with yours, but if you are - you can get another one for free.
http://bpr.hpordercenter.com/hbpr/