Billionaire entrepreneur Elon Musk will build the world's biggest battery in South Australia and will stand by an earlier promise to have it completed within 100 days or supply it free.
Mr Musk's company Tesla will partner with with French renewable energy group Neoen to build the 100 megawatt lithium ion battery, which will the more than three times larger than any existing power storage facility.
He says he's confident he can deliver on his promise but admit's the project is not without risk as it seeks to go "three times further than anyone has gone before".
Dr Tang Kai is questioning the battery's stability and performances. He also believes that the battery will provide positive media effect for Tesla and SA government.
