The Tesla 4680 Cell Generation 2 is interesting as this has been in the battery and electric vehicle news so much.
We originally looked at the Tesla 4680 cell back in November 2022, since then lots of progress and once again The Limiting Factor have done a teardown.
The “roses” that collect the edges of the anode and cathode, providing the tabless design have changed a lot. The video embedded below is really worth watching.
Metrics
- Energy Density
- Gravimetric = 272 Wh/kg
- Volumetric = 716 Wh/litre
- Power Density
- Gravimetric = 1488 W10s/kg
- Volumetric = 3917 W10s/litre
This post has been built based on the support and sponsorship from: Thermo Fisher Scientific, Eatron Technologies, About:Energy, Quarto Technical Services and Alvatek.
Specifications
- Nominal Capacity = 25.73 Ah
- Nominal Voltage = 3.7 V
- Nominal Energy = 95.2 Wh
- Mass = 0.35 kg
- Format = Cylindrical
- Chemistry = NMC Family
- Cathode
- Chemistry = NMC955
- Thickness = 150µm
- Anode
- Chemistry = Graphite (no silicon)
- Dry manufacturing process
- Dimensions
- Diameter = 46 mm
- Height = 80 mm
- Volume = 0.133 Litres
- Can Wall Thickness = 0.35 mm
- Maximum Discharge Power = 521 W
The maximum discharge power is based on the Tesla Cybertruck peak power of 845bhp and the number of cells in the 122.4 kWh (usable) pack.
References
- Generation 2 4680 Tested // Results & Analysis, The Limiting Factor, YouTube
- ‘Cybercell’ Teardown // The Generation 2 4680 *Bonus Content*, The Limiting Factor, YouTube
See also: 46xx Cylindrical Cells