US government agency claims to have found batteries that better Elon Musk's

A US government agency claims it has battery technology that could outdo anything dreamt up by the likes of Bill Gates and Elon Musk. Advanced Research Projects Agency-Energy (ARPA-E) – a branch of the Department of Energy – says it has several next-generation battery storage projects in the works. While the organisation won't go into details about its technology, it says it has found the'holy grail of batteries' could transform the US electrical grid within five to 10 years. Ellen Williams (right), director of Arpa-E, said her agency has helped kickstart a dozen high-risk projects based on newer technologies that could soon outperform Elon Musk's (left) Tesla batteries The battery division of Musk's Tesla Motors turned a profit in the fourth quarter. This came after the first shipments of its rechargeable products helped to reduce losses from the company's auto business.