5kw 48v powerwall.Tesla is revealed to be developing its own batteries in a "secret laboratory"

　　According to electrek, Tesla is developing its own batteries inside a "secret battery laboratory" while preparing to launch its own battery manufacturing.

　　Earlier this month, Tesla all but confirmed that it would use Maxwell technology to make its own batteries. Tesla CEO Elon Musk hinted at the shareholder meeting that Tesla is using Maxwell's new technology for its own battery production. He further emphasized that Tesla may even mine its own raw materials to produce batteries.

　　According to Maxwell, its dry electrode technology can increase the energy density of the battery core to more than 300Wh/kg, and may further increase to 500Wh/kg in the future. Compared with Tesla's existing battery cells, the 500Wh/kg result means that the energy density has doubled. Tesla acquired Maxwell in May this year.

　　According to CNBC, these batteries are being developed in a "secret laboratory" near Tesla's Fremont factory.

　　Tesla’s secret lab is no surprise. For much of the past 10 years, Tesla has had a secure location on the second floor of its Fremont factory to produce battery cells.

　　CNBC reports that Tesla is developing its own batteries and equipment to produce these cells at the factory. Several current and former employees said, “Employees on Tesla’s battery R&D team are currently focused on designing and prototyping advanced lithium-ion batteries, as well as new equipment and processes, which may allow Tesla to produce batteries in high volumes. "

　　For batteries for electric vehicles, Tesla has relied on Panasonic, which is producing batteries for Tesla's Model S and Model X cars in Japan, as well as Tesla's own Gigafactory in Nevada to produce Model 3 batteries.

　　Tesla is expected to announce plans to expand battery production at an investor day at the end of the year.

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