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Canonical battery record · checked 2 September 2026

CR1220

CR1220 has a 12.5 mm diameter and 2 mm nominal height. Another 3 V lithium coin cell is not automatically interchangeable.

CR1220DL1220ECR1220
Answer

CR1220, DL1220, ECR1220 are the supported exact aliases for one 12.5 × 2 mm lithium coin cell. No other family is treated as an automatic replacement.

Top profile · Ø 12.5 mm
Side profile · 2 mm high
Original proportional profiles. Scale is consistent within this diagram; screen size is not a physical ruler.
Format
Lithium coin cell
Dimensions
12.5 × 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 40 mAh; verify load, cut-off and temperature in a current datasheet.
Confidence
High

Equivalence and confusion matrix

Code or familyClassificationReason
CR1220 · DL1220 · ECR1220Exact equivalentThese evidence-backed markings resolve to this one canonical record and share its cited physical and electrical specification.
CR1216Not equivalentThe physical envelopes differ (12.5 × 2 mm versus 12.5 × 1.6 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
LR1120 / 191 / LR55Not equivalentThe physical envelopes differ (12.5 × 2 mm versus 11.6 × 2.05 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
SR1120SW / 381Not equivalentThe physical envelopes differ (12.5 × 2 mm versus 11.6 × 2.05 mm). Do not force, stack or infer equivalence from a shared diameter or code pattern.
SR1120W / 391Not equivalentThe physical envelopes differ (12.5 × 2 mm versus 11.6 × 2.05 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 CR1220

Application context is limited to the scope stated in Energizer CR1220 Product Datasheet; it is not a device compatibility claim.

The CR1220 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.

CR1220 is the only supported 12.5 mm lithium coin family. Its 2.0 mm height should not be inferred from CR16 or CR20 codes; all four digits remain material.

What the code means

CR1220 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 40 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 CR1220 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.

Corroborated against Maxell Button and Coin Battery Cross-reference Table; CR1220 row in the lithium battery table.

Open primary source Open corroborating 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.