Tesla Motors has completed the installation of the world's largest lithium ion battery Tesla Powerpack in South Australia, news.com.au. reported.

According to the portal, testing is underway to ensure they comply with South Australian Government and Australian Energy Market Operator requirements. The enormous battery is expected to be ready to provide power to the state from December 1.

“Congratulations to the Tesla crew and South Australian authorities who worked so hard to get this manufactured and installed in record time!” head of the company Elon Musk tweeted.

Tesla powerpacks, connected to the Hornsdale wind farm run by French company Neoen, have been installed near Jamestown, at a cost of about $33 million.

The battery will run continuously and provide background security to the electricity system when shortfalls arise.

Premier Jay Weatherill will travel to Jamestown next week to officially launch the battery, the portal said.