Samsung SDI, a battery manufacturer under Samsung, is testing a number of 4680 batteries, at least two of which are less than 80mm high. According to South Korean media reports, one of the batteries Samsung SDI is testing conforms to the original specification of 4680 battery launched by Tesla, an American electric vehicle manufacturer, that is, the diameter is 46mm and the height is 80mm.
Another battery tested by Samsung SDI is still 46mm in diameter, but less than 80mm in height. Foreign media reported that it was expected to be between 40-60mm.
South Korean media mentioned in the report that Samsung SDI is testing several 4680 batteries, indicating that it has begun to develop batteries according to Tesla's needs, but the height of one of them has not reached 80mm, which means that they also hope to obtain orders from customers other than Tesla.
According to sources, Samsung SDI expects customers other than Tesla, including BMW and strantis.
In addition, the South Korean media also mentioned in the report that the height of the battery with a height of 40mm and a diameter of 46mm developed by Samsung SDI will reach 80mm after two cells are stacked. If two layers are stacked and packaged, the energy density can be improved, but it may also be heavier and more expensive.
The 4680 battery was launched by Tesla at the "battery day" event on September 22, 2020. It is larger than the 1865 battery and the 2170 battery and has higher energy density. Using this type of battery will help Tesla reduce costs and improve the range of electric vehicles.
After the launch of Tesla, several battery manufacturers have begun to develop this type of battery, including Samsung SDI, Panasonic and LG new energy. Foreign media have mentioned in previous reports that Panasonic will start producing 4680 batteries in 2023 and start mass production before March 2024.