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 memories.

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.
    ・-30 to +70 degrees C(Standard type)  -40 to +125 degrees C(Heat-resistant type)
  • 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 : Sony'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 Series Lineup

■Standard (Nominal Voltage : 3V, Operating Temperature Range : -30°C to 70°C)

■Heat-resistant (Nominal Voltage : 3V, Operating Temperature Range : -40°C to 125°C)

  *Nominal capacity indicates duration until discharge voltage drops down to 2.0V when discharged at nominal discharge current at 23 deg. C.
  *Data is not guaranteed, and is provided for reference purposes only.
For special sizes or specifications not included in the above list, please consult a sales representative.

Murata Icon X Tab-welder

Matrix of Tab-Welded Lithium Manganese Dioxide Battery

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

Murata Icon X Discharge Current vs. Duration (year)

Discharge Current vs. Duration (year)

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 Discharge Characteristics after Storage of CR2025

Discharge Characteristics after Storage of CR2025
  • Storage at 60°Cfor 100 days is the equivalent of storage at room temperature for 5 years.
  • Excellent long-term storage reliability.
  • After storage, discharge voltage/discharge time show little decrease and are stable.

Murata Icon X Cross Section

Cross Section

Murata Icon X Reference