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Camera & specialty

CR2 battery replacement and equivalents

CR2 is a 3 V lithium manganese dioxide cylindrical battery measuring 15.6 × 27 mm. Match the complete specification before treating another marking as a replacement.

DLCR2EL1CR2
Nominal voltage
3 V
Dimensions
15.6 × 27 mm
Chemistry
Lithium manganese dioxide

CR2 specifications

Canonical codeCR2
Formcylindrical
RechargeableNo
Drain markingNot specified

Typical applications

  • Cameras
  • security sensors
  • specialty lights

Replacement decision

Resolve the original marking to this profile, then confirm nominal voltage, chemistry, dimensions, polarity and any drain or terminal suffix. Capacity alone does not establish interchangeability.

Technical sources

  1. International Electrotechnical Commission — IEC 60086-1:2026 — Primary batteries, general requirements

    Primary-battery nomenclature, form, fit, function, terminal and electrochemical-system framework.

  2. International Electrotechnical Commission — IEC 60086-2-2:2026 — Physical and electrical specifications of lithium batteries

    Standardized primary-lithium dimensions and electrical specification context.

  3. Energizer — Battery Replacement Guide

    Cross-reference codes and manufacturer guidance to replace the same size and type together.

  4. Duracell — Battery chemistry technical bulletins

    Alkaline, lithium-manganese-dioxide, zinc-air and silver-oxide chemistry behavior.