Elon Musk predicts 50% boost to Model 3 battery's power

Tesla boss Elon Musk predicts that his company will be able to mass produce electric batteries for its Model 3 sedans with 50% more power in three to four years' time.

"400 Wh/kg *with* high cycle life, produced in volume (not just a lab) is not far. Probably 3 to 4 years," Musk said in a post on Twitter.

The prediction was made ahead of the company's Battery Day scheduled for 22 September, the same day as its annual general meeting.

According to South Korean battery expert, Park Chul-wan, one of the images provided by Tesla may hint at the use of silicon nanowire anode, a new technology that could potentially increase the energy density of batteries as well as their life time, Reuters reported on 4 August.

Earlier the same day, Panasonic told the same newswire that it was planning to improve the energy density of the '2170' batteries used in the Model 3 by 20% in five years' time.