Buying a Sony battery

[No_one_in_particular]

Well I went into town, and apparently the shops don't stock PSP batterys. Tried GAME, Zavvi, even the Sony store; none had any. So it looks like I'm buying online - any recommendations ? Also, is there any batteries which can't be Pandora-ized that I'll need to avoid ? Thanks again...

[jxx2005]

check major department stores like Walmart or K-mart or zellers
i dont know what you have in UK, but places like that probably have it