x40 Battery replacement... what will work

[kennyschiff]

I have had previous issues buying non-Lenovo/IBM replacement battery for my X61 as the OS kept complaining that it was not a genuine battery (annoying). My wife needs to replace her 5 year old X40 battery. Will I have the same issues with an OEM battery? what are some good sources for batteries for an X40. Someone previously pointed me to a great ebay seller on the X61 battery where I was able to buy an old (but new in packaging) X61 battery. Would love to find a similar deal.

[underclocker]

PM sent with two options for genuine batteries.