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ER14250 battery replacement and equivalents

ER14250 is a 3.6 V lithium thionyl chloride cylindrical battery measuring 14.5 × 25 mm. Match the complete specification before treating another marking as a replacement.

1/2AA
Nominal voltage
3.6 V
Dimensions
14.5 × 25 mm
Chemistry
Lithium thionyl chloride

ER14250 specifications

Canonical codeER14250
Formcylindrical
RechargeableNo
Drain markingNot specified

Typical applications

  • Industrial memory backup
  • meters
  • long-life sensors

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.