SEOUL (Reuters) – Tesla Inc (TSLA.O) CEO Elon Musk has suggested the U.S. electric carmaker may be able to mass produce batteries with 50% more energy density in three to four years, which could even enable electric airplanes.
His comments came as speculation is growing about announcements at Tesla’s anticipated “Battery Day” event where it is expected to reveal how it has improved its battery performance.
“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 in response to a Twitter thread by Sam Korus, an analyst at ARK Investment Management LLC, about why Musk keeps hinting at a Tesla electric plane.
Researchers have said the energy density of Panasonic’s (6752.T) “2170” batteries used in Tesla’s Model 3 is around 260 Wh/kg, meaning a 50% jump from the current energy density which is key to achieving a longer driving range.