Coin Manganese Dioxide Lithium Batteries

Coin manganese dioxide lithium batteries

Coin manganese dioxide lithium batteries are small-sized primary batteries for various applications such as smart entry systems or TPMS (Tire Pressure Monitoring System) for automobile, IoT devices and backup power source for memory.

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Micro Batteries for Watches

Murata Icon X Selection Guide

Standard Lineup of 11 models from small size and thin models to high capacity models
Extended Temperature
 (New product)
Supports an operating temperature range up to 85 ºC for common ICs
Heat-resistant Ideal for devices used in severe operating temperature environments including automobiles and FA
High Drain 
(New product)
Ideal for devices with large current loads, such as LPWA communication, etc.

    NEW!   NEW!
Type Standard Extended
Heat Resistant High Drain
Model number
 (CR2032 size)
CR2032 CR2032X CR2032W CR2032R
Operating temperature -30℃
to +70℃
to +85℃
to +125℃
to +70℃
Recommended discharge current
* Current with which 90% of nominal capacity can be used
1mA or less 1mA or less
1mA or less
3mA or less
Maximum pulse current
* Current for maintaining minimum 2V voltage with pulsed discharge of 3 seconds and 50% nominal capacity discharged (ambient temperature 23ºC)
30mA 30mA

Murata Icon X Feature

  • Lightweight, High Voltage and High Energy Density
    The battery voltage is 3V, almost double that of normal alkaline or manganese batteries. This means that the number of batteries required for equipment can be halved for maximum space saving and weight reduction.
  • Excellent Discharge Characteristics
    Voltage characteristics remain stable even for a long period of discharge, greatly improving the reliability of equipment that uses the battery. Such equipment is also maintenance-free (battery replacement is seldom required).
  • Outstanding Temperature Characteristics
    Murata's original organic electrolyte provides superb characteristics over a wide range of temperature from low to high. 
      - Standard / High drain: -30 to +70 degrees C
      - Extended temperature: -40 to +85 degrees C
      - Heat-resistant: -40 to +125 degrees C
  • Excellent Leakage Resistance
    The newly developed battery construction and electrolyte ensure maximum leakage resistance over a long span of time.
  • Excellent Long-Term Reliability
    Carefully selected active materials are used for the active material as well as for the electrolyte. These materials are sealed by Murata's innovative technology to minimize battery self-discharge. The annual self-discharge rate at room temperature and normal humidity is less than 1% of the nominal capacity.
  • UL Approved Parts
    Murata's Coin Manganese Dioxide Lithium Batteries are approved by UL. (UL1642 File No. MH12566)
  • RoHS  directive・European Directives
    This product does not contain Mercury (Hg), Cadmium (Cd), nor Lead (Pb), and conforms to EC regulation values (Directive 2006/66/EC, 2013/56/EU).
    Battery pack are excluded from RoHS directive (DIRECTIVE 2011/65/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment).

Murata Icon X Tab-welder

Matrix of Tab-Welded Lithium Manganese Dioxide Battery
When you click the thumbnail, the detailed dimension will be displayed.

For tab shapes or specifications not included in the above list, please consult a sales representative.

  • Soldering Condition (Recommendation)
    ・Soldering iron temperature: 380±10°C
    ・Heating time: 3 - 4sec.

Murata Icon X Principle of Lithium Manganese Dioxide Battery

Specially processed manganese dioxide (MnO2) is used for the active cathode material, and high-voltage, high-activity lithium metal for the active anode material. The electrolyte is lithium salt molten into an organic solution to ensure easy transmission of high voltage and high energy to the exterior.
Battery discharge reactions are as follows:
Principle of Lithium Manganese Dioxide Battery

With open circuit voltage of approx. 3V, the battery voltage is extremely stable and impedance remains low and stable during discharge.

Murata Icon X Cross Section

Cross Section

Murata Icon X Reference