On Wed, Aug 5, 2009 at 11:14 AM, Blake Hudson<blake at ispn.net> wrote: > > How old is your laptop? This may be a case of expectations not meeting > reality. As the Wiki article linked previously mentions, LiION batteries > deteriorate over time and with use (as do all batteries). In my > experience, a typical laptop battery (treated well) will last 2 years > while maintaining the majority of its original capacity. After 5 years, > the battery run time is often inadequate to meet the needs of the owner. > When purchasing a laptop, I would have the expectation that the battery > will need replaced every 2-3 years - if the laptop is used, assume that > it needs a new battery. The laptop is about 18 months old, so the battery was nearing its end but I'd hoped for at least another 6 months of useful time (more than 10 minutes). The battery is in worse condition than three identical batteries in the other 3 laptops purchased at the same time. The main difference is that this laptop is plugged in continuously while the others are mobile.