1. 4680 battery means: the newly launched battery of Panasonic brand Tesla series is named 4680 battery.
2. 4680 battery weight energy density = battery capacity × discharge platform voltage/weight, the basic unit is Wh/kg (watt hour/kg).
3. The energy density of the battery is divided into the energy density of the battery core and the energy density of the battery system.
4. The volume of 4680 battery cells is 5.48 times that of 21700. According to the situation category from 18650 to 21700, it is normal for the capacity to increase by 5 times without considering other technical improvements. So Tesla is very honest when he says that the energy is increased by five times (ENERGY5X), and it may actually be about 5.5 times.
5. Panasonic recently stated that it will increase the energy density of the 21700 batteries produced at the Gigafactory in Nevada by 5%. The latest Model 3 vehicle registration information exported to Europe has shown that the battery capacity is 82kWh, which is indeed an increase of about 5 compared to the previous 78kWh.