I purchased this product on 12/15/2004 within a year it would not a hold a charge that lasted longer than 10 minutes. It's display 3 lights at full charge... even after charging for 8 hours straight it only gives one light.It did give a good 3 hours of power when you used minimum monitor brightness and turned on the laptop to conserve power... but don't expect the battery to have the staying power of your standard laptop battery.