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    Home»Sections»Motoring and transport»Elon Musk hints at battery breakthrough

    Elon Musk hints at battery breakthrough

    Motoring and transport By Agency Staff25 August 2020
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    Tesla CEO Elon Musk. Aly Song/Reuters

    Tesla CEO Elon Musk has suggested the electric car maker may be able to mass produce longer-life batteries with 50% more energy density in three to four years.

    “400Wh/kg *with* high cycle life, produced in volume (not just a lab) is not far. Probably 3 to 4 years,” Musk tweeted on Monday ahead of its anticipated “Battery Day” event where Tesla is expected to reveal how it has improved its battery performance.

    Researchers have said the energy density of Panasonic’s batteries used in Tesla’s Model 3 is around 260Wh/kg, meaning a 50% jump from the current energy density which is key to achieving a longer driving range.

    Panasonic said earlier that it plans to boost the energy density of the original “2170” battery cells it supplies to Tesla by 20% in five years

    Tesla said its Battery Day will take place on the same day as its 2020 annual meeting of shareholders on 22 September.

    The electric car manufacturer also showed a background image where a number of dots are clustered in line formations, sparking speculation among media and fans about what it will reveal at the event.

    South Korean battery expert Park Chul-wan said the image may hint at “silicon nanowire anode”, a breakthrough technology that can potentially increase both battery energy density and battery life sharply.

    A million miles

    Panasonic said earlier that it plans to boost the energy density of the original “2170” battery cells it supplies to Tesla by 20% in five years.

    Tesla is also working with China’s Contemporary Amperex Technology to introduce a new low-cost, long-life battery in its Model 3 sedan in China later this year or early next year, with the batteries designed to last for a million miles of use.

    A very “limited number of stockholders” will be able to attend the 22 September events due to pandemic-related restrictions, Tesla said, and a lottery will be held to select attendees.  — Reported by Hyunjoo Jin and Makiko Yamazaki, (c) Reuters

    Elon Musk Panasonic Tesla top
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