ASUS has discovered that a notebook battery manufactured by a third-party vendor in 2007 may, under rare conditions and after long-term use, pose a safety risk. In order to ensure the safety of our customers, ASUS is voluntarily providing a free replacement for all affected batteries.
This replacement program is only applicable to batteries manufactured in 2007 by a third-party vendor and distributed with ASUS X51 and Pro52 notebooks. We encourage owners of notebooks that meet these criteria to visit http://rma.asus.de/battery/battery.aspx?country=all for full instructions on how to verify if their batteries are affected, and how to obtain a free replacement*. Users of notebooks that fall outside the above criteria can continue to use their notebooks with complete peace of mind.
At ASUS, the safety of our customers is paramount. We are fully committed to proactively identifying, rectifying, and subsequently preventing the reoccurrence of safety issues. We will continue to make every effort to ensure that the products we ship are of the utmost quality.
Source: Asus