Canonical battery record · checked 2 September 2026

CR2012

CR2012 has a 20 mm diameter and 1.2 mm nominal height. Another 3 V lithium coin cell is not automatically interchangeable.

CR2012

Answer

CR2012 is the supported canonical designation for one 20 × 1.2 mm lithium coin cell. No other family is treated as an automatic replacement.

Top profile · Ø 20 mm

Side profile · 1.2 mm high

Original proportional profiles. Scale is consistent within this diagram; screen size is not a physical ruler.

Format: Lithium coin cell
Dimensions: 20 × 1.2 mm
Voltage: 3 V nominal
Chemistry: Lithium manganese dioxide
Drain context: Low continuous drain; pulse performance is product-specific
Rechargeable?: No — primary cell; do not recharge.
Capacity context: Typical product figure near 58 mAh; verify load, cut-off and temperature in a current datasheet.
Confidence: High

Equivalence and confusion matrix

Code or familyClassificationReason

CR2012Exact equivalentThese evidence-backed markings resolve to this one canonical record and share its cited physical and electrical specification.

CR2016Not equivalentThe physical envelopes differ (20 × 1.2 mm versus 20 × 1.6 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

CR2025Not equivalentThe physical envelopes differ (20 × 1.2 mm versus 20 × 2.5 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

CR2032Not equivalentThe physical envelopes differ (20 × 1.2 mm versus 20 × 3.2 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

CR2320Not equivalentThe physical envelopes differ (20 × 1.2 mm versus 23 × 2 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.

Supported application context

Devices whose battery compartment or manual specifies CR2012

Application context is limited to the scope stated in Energizer CR2012 Product Datasheet; it is not a device compatibility claim.

The CR2012 code fixes both diameter and height. Nearby CR codes may appear in the same device category but differ physically; verify the complete four-digit designation.

CR2012 is the thinnest supported 20 mm lithium coin cell at 1.2 mm. CR2016 adds 0.4 mm of height, while CR2025 and CR2032 are more than twice as tall.

Commonly confused

CR2016 — compare all four decision fields.
CR2025 — compare all four decision fields.
CR2032 — compare all four decision fields.
CR2320 — compare all four decision fields.

What the code means

CR2012 identifies a lithium manganese-dioxide coin cell; the digits encode a nominal diameter and height class, but the cited drawing controls the actual dimensions.

Discharge and drain behaviour

This primary lithium chemistry is intended for low continuous loads with product-specific pulse capability. Capacity figures cannot be compared without matching the load, cut-off voltage and temperature.

Capacity context: Typical product figure near 58 mAh; verify load, cut-off and temperature in a current datasheet.

Substitution guidance

Treat only the listed aliases as exact. A different CR number changes the physical envelope, so do not stack, force or substitute a thinner or thicker coin cell.

Fact-level evidence

Energizer CR2012 Product Datasheet

Published by Energizer; page 1, specifications and industry-standard dimensions drawing. Checked 2 September 2026. Independently presented facts only; publisher wording, layout and diagrams are not reproduced.

Open primary source

Not a device-fit guarantee.

Confirm the exact code, chemistry and drain requirement with the device maker. Keep button and coin cells away from children and never recharge this primary cell.