My PC is prop. Not that old. Property it acquired in early 2010. Time after 2 years bleated my system that the battery should be replaced. About 2 years it went so well, always with the danger that my laptop suddenly went down. No problem, all right. For the price I have then still considered to use a new battery and now this holds again 1-2 hours. So for the price I can so far do not express any neg. Criticism.