The seven-time Grand Slam champion powered to victory in 85 minutes and afterwards dismissed speculation she is considering retiring from the sport.
“I know I have so much more to give. As long as I keep playing well, I’ll stay,” said the world number six.
The 29-year-old will now head to Melbourne to complete her preparations.
Williams said she was happy with Friday’s workout, which came the day after rain had prematurely ended her match against Caroline Wozniacki.
“The match was through in two sets but it took 85 minutes. She is an extremely tough competitor and does so many things well so it felt good to get the win,” said the American.
And Williams, who has never won the Australian Open, is confident she will be ready to compete for the title in Melbourne.
“I know how to play tennis and I now just have to do it in Melbourne,” she added.