Tesla founder Elon Musk has announced technology that he says will make Tesla batteries cheaper and more powerful.
At a live presentation that Mr Musk labelled ‘Battery Day’ he also teased the possibility of a $25,000 (£19,600), fully-autonomous Tesla “in about three years time”.
“This has always been our dream to make an affordable electric car,” he said.
But the news didn’t excite investors and $50bn was wiped off its stock market value.
The main announcement was Tesla’s new larger cylindrical cells. It was claimed the new batteries will provide five times more energy, six times more power and 16% greater driving range.
But the technology announced is likely to take years to implement.
Tesla’s approach includes integrating the battery so that it forms part of the structure of the vehicle, thereby reducing the effective weight of the battery.
The speech took place in front of 240 shareholders – each sitting in a Tesla Model 3.
Central to cheaper Teslas are innovations in the way the company designs batteries – radically improving their efficiency.
Professor Stanley Whittingham, a member of the National Academy of Engineering, told the BBC that “tackling all the opportunities is high risk, but high pay-off”.
“Many of us have suggested the same steps are necessary, but Tesla has the investment and will to make it happen. Not sure anyone else is willing to do this,” he said.
Mr Musk also announced that as well as purchasing batteries from Panasonic and LG Chem – Tesla itself would begin to make them.
Speaking to the BBC, Casper Rawles, Head of Price Assessments at Benchmark Mineral Intelligence, said scaling up would be “challenging”
“Even with really experienced car manufacturers, we tend to see a very high scrap rate of production in the first couple of years.”
He also warned that so much of the content of the battery is expensive metals – “You can only reduce the cost down to a point”.
Four consecutive quarters of growth have helped Tesla’s share price soar and it is now the most valuable car company in the world.
This is despite criticisms of Elon Musk that some of his technological advances have been exaggerated.
Tesla’s boss however announced that a ‘beta’ version of the full Autpilot software would be available “in a month or so”.
Musk is no stranger to glitzy and sometimes bizarre public demonstrations.
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