Lithium cells: 14500, 16340, 18350, 26650, 32650 — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/lithium-cells-14500-to-32650/  (CC BY 4.0)
Basis: IEC 61960 naming (first two digits diameter, next two length in mm, trailing 0 = cylindrical); real cells run slightly over nominal
Catalog version: 2026-10-20

Sizes: see table below
- Nominal: 14500 Ø14 × 50 (AA-sized, 3.7 V, not interchangeable with AA), 16340 Ø16 × 34 (CR123A size), 18350 Ø18 × 35, 26650 Ø26 × 65, 32650 Ø32 × 65.
- Real cells and wraps add 0.2–0.5 mm to diameter and 0.3 mm to length; protected cells add 2–4 mm length. Design holders at nominal + 0.5 diameter, + 1.5 length.
- See the 18650 and 21700 entries for the two common pack cells.

cell  dia_mm  length_mm  design_holder_mm  note
14500  14  50  Ø14.5 × 51.5  AA size, 3.7 V
16340  16  34  Ø16.5 × 35.5  CR123A size
18350  18  35  Ø18.5 × 36.5  short 18650
18650  18  65  Ø18.6 × 65.5  see entry
21700  21  70  Ø21.5 × 70.6  see entry
26650  26  65  Ø26.5 × 66.5  high capacity
32650  32  65  Ø32.5 × 66.5  LiFePO4 common

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: List of battery sizes — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/List_of_battery_sizes
- Wikipedia: Lithium-ion battery — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Lithium-ion_battery

Free files (CC BY 4.0, Xem Studio; STEP + STL, 5 parts): https://xemstudio.com/files/hardware/lithium-cells-14500-to-32650/index.json
API: https://xemstudio.com/api/geometry?object=lithium-cells-14500-to-32650