Sales people often make use of simple applications for typing documents, making presentations or using excel worksheets. And with the many technology advances we've seen in recent months, notebooks are now very affordable. There is a 15" Mac - Book Pro in between that starts at $1799. Laptop battery life is so important that it is known to many that the performance of portable laptops depends greatly on the performance of the battery that is being used. You should check the specs of your laptop to ensure that whether it has the low voltage (lw) or ultra low voltage (ulv) processor.