Battery Update 1.3

Battery Update 1.3 updates battery firmware and addresses battery performance issues with the 15-inch MacBook Pro. Your computer's power cord must be connected and plugged into a working power source while running this update.

After the Battery Update has been installed, any additional batteries you put in your 15-inch MacBook Pro are automatically updated.

For further information on this Update, please visit this website: About Battery Update 1.3.