Sony Vaio NR160 battery life/compatibilty with batteries

Hey all, I just purchased a Sony vaio NR160 and upgraded the ram to 2gb at time of purchase. I am less than happy with the battery life 2hrs with WIFI on. I really dont want to spend 300 dollars on a high capacity battery from sony. Are there any other options? Im looking on ebay and a lot of the batteries for the NR a lot of them look similar to mine but none of them same compatible with the NR series, Which ones are?
This is the laptop i purchased.
http://www.sonystyle.com/webapp/wcs...10151&langId=-1&productId=8198552921665243979

Thanks


EDIT: This is one of the batteries im looking at.
http://cgi.ebay.com/6600MAH-Battery...ryZ31518QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Will it fit?

 

The one you're looking at won't fit, you need one like this:

http://www.sonystyle.com/webapp/wcs...roductId=8198552921665167463&categoryId=27847

or like this:


http://www.sonystyle.com/webapp/wcs...roductId=8198552921665167465&categoryId=27847


Keep looking though, i'm sure you'll find one thats cheaper then Sony sell's 'm soon.

 

The one from the ebay auction just looks like a flipped over version of the one from the sony website. Maybe im just seeing things wrong. The ebay auction says it works for the N11s? Is this the same as the NR series?


Ah looking more into it i need the BP(L/S)9 battery. Will any others fit?

 

Well, I dont really like anything about this laptop after I got it. Thanks for the help but i am sticking away from sony from now on and returning this one.