Tesla Steers Course For Battery-Powered Homes - lithium battery pack

The company, run by billionaire entrepreneur Elon Musk, looks at home energy to tackle climate change.
Electric vehicle company Tesla has confirmed plans to power homes and businesses using battery technology.
The company, run by billionaire technology entrepreneur Elon Musk, said it hopes to reshape the world's power grid by reducing its dependence on oil and gas.
Musk said at a conference in California: "Our goal is to fundamentally change the way the world uses energy.
"At the heart of the plan is solar charging the battery pack, known as Powerwall in the domestic market.
Tesla says the system will use manualsized lithium-
Ion batteries similar to the car model, the recommended price tag is up to $3,500 (£ 2,300) depending on the required capacity ).
Mr. Musk, named Powerpack, is known for his lofty ambitions, including a trip to Mars through his SpaceX company, and says he plans to install several powerwallin at home.
The tycoon added that he was encouraged by the initial interest and claimed the potential of a two-billion-unit battery pack market, although international sales will not begin until next year.
The goal, he said, is to eventually build regional networks that can effectively become local power plants.
The project's partners include solar installer olaresolarcity, created by his cousins, Lyndon and Peter Ryf.
While core issues about battery life and cost remain, Musk insists that it may have a big advantage for people around the world who cannot access electricity.
"I don't believe that the first incarnation of this product will interest ordinary people," Mr Ryff admits.
"This announcement is seen as the biggest interest in orders, as battery production plans increase when the new" Gigabit battery "opens in 2017.