Cylindrical Cell Comparison 4680 vs 21700 vs 18650

In this Article, we will compare different Cylindrical Cell Sizes used in electric Vehicles. 4680 vs 21700 vs 18650.

Road Vehicle Power Demand

Let’s look at the road vehicle power demand for the simple steady state condition. We will look at the tractive effort and power required: Aerodynamic Forces The aerodynamic forces on the vehicle are proportional to velocity squared and hence become dominant at high speed. FA is the frontal area and Cd is the drag coefficient. … Read more

2022 Tesla Semi Specifications

In order that we can understand the specifications of the battery pack it is necessary to at first piece together the vehicle. Warning: this page is going to have updates/amendments over time and some values are likely to be an estimate. Specifications A typical single tank semi can do circa 550miles and tanks hold up … Read more

2022 Tesla Model Y 4680

Tesla 4680 battery cooling

Caution: This is a very difficult pack to reconcile the numbers around at the moment and so we are continually updating our calculations and estimates. We will get there, but it might take some time. Specifications: Assuming the 4680 cell from the Munro teardown is correct at 23.35Ah then we have the following parameters: Assuming … Read more

Tesla 4680 Cell

Tesla 4680

The Tesla 4680 cell has intrigued ever since it was announced. A cylindrical cell that is 46mm in diameter and 80mm high. Estimated Specifications: Capacity tests [6]: Capacity: 23.35Ah at 2.5A discharge ~C/10 Capacity: 20Ah at 25A discharge ~1C 26.5Ah (estimate based on 21700 5Ah volumetric energy density) and this fits with capacity of the … Read more