Wich battery to buy?

[Ezekuel]

I have just bought my first Thinkpad ever. The X40 with 1,4GHz, 512mb ram and a 4-Cell battery.

I would like to buy a 8-Cell battery [censored] well, to use when I am traveling.

But wich off these two should I buy?
http://www5.pc.ibm.com/no/products.nsf/ ... enDocument
or
http://www5.pc.ibm.com/no/products.nsf/ ... enDocument

Can you help me? Wich one of these two are best?

And I have to say that the X40 is the best portable computer I have ever used!

[tripper]

ebay man. i just got a new battery for £5, original ibm, second hand! just ask how many times it's been cycled .. >150 is grim.

[pphilipko]

http://www5.pc.ibm.com/no/products.nsf/ ... enDocument

This is the more updated version of the battery.