Musk hints of bat­tery ca­pac­ity jump ahead of in­dus­try event

The Pak Banker - - COMPANIES / BOSS - SEOUL -AFP

Tesla Inc's (TSLA.O) chief ex­ec­u­tive Elon Musk has sug­gested the U.S. elec­tric car­maker may be able to mass pro­duce longer-life bat­ter­ies with 50% more en­ergy den­sity in three to four years.

"400 Wh/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 ( 6752. T) "2170" 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.

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

South Korean bat­tery ex­pert Park Chul-wan said the im­age may hint at "sil­i­con nanowire an­ode," a break­through tech­nol­ogy which can po­ten­tially in­crease both bat­tery en­ergy den­sity and bat­tery life sharply. Pana­sonic Corp (6752.T) ear­lier told Reuters 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 Ltd (CATL) (300750.SZ) 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, Reuters re­ported in May.

A very "lim­ited num­ber of stock­hold­ers" will be able to at­tend the Sept. 22 events due to pan­demic-re­lated re­stric­tions, Tesla said, and a lottery will be held to se­lect at­ten­dees.

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