Watch Tesla's Cylindrical 4680 Battery Pack Compared with 2170 Pack
Tesla's million mile battery technology could upgrade your Tesla from 82 kWH to 95 kWH.
The evolution of Tesla batteries from their first laptop battery powered EV to more recent specialty cells with greater capacity and power—yet in a smaller package—holds the promise that future Tesla vehicles will eventually come with greater road range and at an affordable price for mainstream America.
Their relatively more recent design resulted in a reduction in electrical path within each cell—which translates into a smaller size and greater power capacity as seen with the 2170 form factor cell. 2170 gets its name from the fact that each cell is 21 mm in diameter and 70 mm in length.
However, the next design improvement is the newer shingle-spiral design that is tab-less, simpler to manufacture and comes in a package size of 46 mm in diameter and 80 mm in length—hence its name “4680.”
The 4680 is expected to provide five times more energy storage with 6 times more power resulting in an expected increase in road range of up to 16 percent. Aside from the power it possesses, even more important is that it will become significantly cheaper to manufacture than its predecessor and lead to more-affordable Tesla EVs.
"It's easy to see how you’re fitting more energy in less space---less containers in containers in containers; more space for storing energy," writes Whole Mars Blog on his Twitter.
This is "not what I imagined a structural pack to be. But it still looks like a battery inside a case, and the case is the structural member. I was thinking more a metal honeycomb structure, but the voids are the battery cells," writes another twitter user named SydEV.
The article header image provides some visual indication of how the two battery cell types compare with each other with respect to their pack arrangement and size.
EV Battery Cell Evolution
For more about the significance of this battery cell development that could be potentially be used to upgrade existing Teslas from 82 kWH to 95 kWH, read this informative article from Torque News reporter Peter Nielson who explains Why The Tesla Tabless Battery Is So Good and its evolution in electric vehicles.
You Tube Videos for Learning More About the 4680 Form Factor Battery Cell
Here are two very informative YouTube videos that will demonstrate the manufacture of the battery cells and discuss the latest on Tesla battery info:
Some Math on Tesla’s New Batteries, Munro 2021 Model 3, Dahn/Tesla Battery Contract
How Tesla's Next Gen Batteries Will Power 21st Century
If you found this interesting, here is a recent Tesla battery basics you will find informative.
Timothy Boyer is Torque News Tesla and EV reporter based in Cincinnati. Experienced with early car restorations, he regularly restores older vehicles with engine modifications for improved performance. Follow Tim on Twitter at @TimBoyerWrites for daily Tesla and electric vehicle news.