Two things: (1) Lenovo does provide a manual web interface, https://lenovobattery2014.orderz.com/ https://lenovobattery2014.orderz.com/, to verify whether this

Two things: (1) Lenovo does provide a manual web interface, https://lenovobattery2014.orderz.com/ https://lenovobattery2014.orderz.com/, to verify whether this affects any equipment you own...their default tool involves the end user downloading and installing a Microsoft Windows executable, which does not work if you have an alternate operating system installed; and (2) even though I have a Lenovo X201 laptop with a "42T4695" in the battery pack bar code, since Lenovo manufactured it in July 2010--outside the range of October 2010-April 2011--I am not eligible for replacement (a bit disappointing, but it seems reasonable, to me).