How much important is a battery to a laptop? I guess you know it. This battery has internal circuit board with chips that allow it to communicate with the notebook to monitor battery performance, output voltage and temperature. It also gives the notebook accurate 'fuel gauge' capability to determine how much battery runtime is left before the next recharge is required. Try this replacement battery to make full use of your laptop.
Other Thoughts:I'm very happy with this battery since with my old one it wouldn't hold a charge for over a minute. This one has a very long battery life and I really don't mind how far it sticks out. It makes it easier.