CR2032 vs CR2025 vs CR2016

All three are lithium manganese dioxide coin cells, 3.0 V, 20.00 mm across on Energizer’s and Panasonic’s sheets. The difference is thickness: 3.20 mm, 2.50 mm and 1.60 mm. On these sheets the last two digits of each name match its thickness in tenths of a millimetre.

How much thinner

• A CR2025 is 0.70 mm thinner than a CR2032.
• A CR2016 is 1.60 mm thinner than a CR2032, and 0.90 mm thinner than a CR2025.

Energizer’s drawings give each thickness as a range, not a single figure: CR2032 2.90–3.20 mm (Energizer CR2032 datasheet); CR2025 2.20–2.50 mm (Energizer CR2025 datasheet); CR2016 1.40–1.60 mm (Energizer CR2016 datasheet). The figures above use the upper end, which matches Panasonic’s catalogue.

None of the datasheets on this page says whether one can stand in for another. Whether a thinner cell sits firmly in a holder built for a thicker one depends on the holder; the device’s manual is the place that answers it. For car keys, see which cell each owner’s manual names.

Capacity

Within each maker’s own figures the thicker cell is rated higher, but each maker rates capacity its own way (load and cut-off voltage), so the figures in each box below come from different tests and shouldn’t be compared across makers.

Specs, with sources

CR2032

CR2032

Maker part numbers checked: Duracell CR2032, Energizer CR2032, Panasonic CR2032

Chemistry

Lithium manganese dioxideEnergizer CR2032 datasheet, PDF p. 1 · Duracell CR2032 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 · checked 2026-09-26

Voltage

3.0 VEnergizer CR2032 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2032 row (voltage, capacity, diameter, height)) · Duracell CR2032 datasheet, PDF p. 1 (open circuit) · checked 2026-09-26

Diameter

20.00 mmEnergizer CR2032 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2032 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Height

3.20 mmEnergizer CR2032 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2032 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Rated capacity

Sources disagree

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 225 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V); Duracell CR2032 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)
• 235 mAh — Energizer CR2032 datasheet, PDF p. 1 (15 kΩ, to 2.0 V) (checked 2026-09-26)

CR2025

CR2025

Maker part numbers checked: Duracell CR2025, Energizer CR2025, Panasonic CR2025

Chemistry

Lithium manganese dioxideEnergizer CR2025 datasheet, PDF p. 1 · Duracell CR2025 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 · checked 2026-09-26

Voltage

3.0 VEnergizer CR2025 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2025 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Diameter

20.00 mmEnergizer CR2025 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2025 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Height

2.50 mmEnergizer CR2025 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2025 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Rated capacity

Sources disagree

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 170 mAh — Energizer CR2025 datasheet, PDF p. 1 (15 kΩ, to 2.0 V) (checked 2026-09-26)
• 165 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V) (checked 2026-09-26)
• 150 mAh — Duracell CR2025 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)

CR2016

CR2016

Maker part numbers checked: Duracell CR2016, Energizer CR2016, Panasonic CR2016

Chemistry

Lithium manganese dioxideEnergizer CR2016 datasheet, PDF p. 1 · Duracell CR2016 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 · checked 2026-09-26

Voltage

3.0 VEnergizer CR2016 datasheet, PDF p. 1 · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2016 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Diameter

20.00 mmEnergizer CR2016 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2016 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Height

1.60 mmEnergizer CR2016 datasheet, PDF p. 1 (upper figure of the range on the drawing) · Panasonic lithium batteries catalog, PDF p. 27 (catalog table, CR2016 row (voltage, capacity, diameter, height)) · checked 2026-09-26

Rated capacity

Sources disagree

Each maker rates capacity under its own test load and cut-off voltage, so the figures below aren’t measured the same way.

• 100 mAh — Energizer CR2016 datasheet, PDF p. 1 (30 kΩ, to 2.0 V) (checked 2026-09-26)
• 90 mAh — Panasonic lithium batteries catalog, PDF p. 27 (nominal; standard drain to 2.0 V) (checked 2026-09-26)
• 110 mAh — Duracell CR2016 datasheet, PDF p. 1 (15 kΩ continuous, to 2.0 V) (checked 2026-09-26)

What this page doesn’t cover

Other cells

How values are checked and what “equivalent” means here: method.