if you didn't have to send in your sony battery, now you do.
http://arstechnica.com/news.ars/post/20060928-7858.htmlso go to your lappy's website and call tech support on what to do, if you want to do it.
DELL -
http://www.dellbatteryprogram.com/regionalSupport.aspx or 1-866-342-0011
APPLE - eff macs, find your own damn stuff
GATEWAY -
http://support.gateway.com/support/ask_gateway.asp i got lost trying to find a number that i don't need
HP - i don't think hp has any sony batteries, but...
http://www.hp.comand i ran out of companies that i think have a sony battery