LF: X301 6 cell battery 49+

[alexander_s]

I am looking for a Lenovo 49+ 6-cell battery to fit X301. Please let me know if you have a decent one lying around or if you have any recommendation for aftermarket types. Thanks.

[28CarsLater]

I actually bought a six cell from Ebay when I got my X300 (w/Middleton's) two years ago and it would not charge or post with the aftermarket battery. I cannot recall if it was one of those 49+ ones or not, but I ended up throwing it out. This one will only charge and post with name brand batteries. I recently acquired a difference X300 so I am curious to see if the same thing occurs. Related to MIddleton's BIOS? Can anyone confirm aftermarket batteries even work with an X300?