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

Jelly roll

The jelly roll or Swiss roll design is the design used in the majority of cylindrical rechargeable batteries, including nickel–cadmium (Ni-Cd), nickel-metal hydride (Ni-MH), and lithium-ion (Li-ion). The design has this name because the cross section of the battery looks like a Swiss roll (*).


Also known asswiss roll, jelly roll battery
Used inTCCylindrical lithium-ion cell
Related images
18650 cell disassembled
Jelly roll
Wikidata QIDQ16972391
Explore Graph
A swiss roll, the namesake of this design.

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