Image: A cylindrical 18650 lithium-ion cell without the casing on, showing the jelly roll inside.

Cylindrical lithium-ion cell

DescriptionA cylindrical lithium-ion cell is a cylindrical cell made from a single long "sandwich" of the positive electrode, separator, negative electrode, and insulating sheet which is then rolled and inserted into a hollow cylinder casing. This cell design is often called a "jelly roll" or "swiss roll" because the cross section looks like a swiss roll.
Type ofTCLithium-ion cell
Has typesTC18650 cell, TC21700 cell, TC4680 cell
Has partTCJelly roll
Used inPRivian 21700 Battery Module, PTesla 18650 battery module (5kWh), PTesla Powerpack 2, PTesla Powerwall 2
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