It is reported that Panasonic will build a prototype of a new 4680 cylindrical lithium battery for Tesla in 2021. The battery, customized by Tesla, has a diameter of up to 4.6 cm and a high 8.0cm. The 4680 lithium battery is larger than general-purpose models and uses different raw materials, which can reduce costs.
Tesla CEO Elon Musk announced the new battery in September. This scheme uses a module-less design, which is composed of about 960 cells, and the energy density can be increased to 300Wh/kg. The new battery will use electrodeless ear technology to reduce internal resistance and reduce heat.
Panasonic will build a prototype production line on existing equipment at an estimated cost of tens of millions of dollars. Industry observers point out that Tesla expects it to be difficult to complete production on his own, so Panasonic will seek partners to share some of the production tasks.
In fiscal year 2019, sales of Panasonic's car battery business were 473.5 billion yen ($4.57 billion), with Tesla as its main customer.
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