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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	Standard ＞
	Extended Temperature (New product)　＞
	Heat-resistant ＞
	High Drain (New product)　＞

Selection Guide

Feature

Tab-welder

Principle of Lithium Manganese Dioxide Battery

Cross Section

Reference

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!

Type	Standard	Extended Temperature	Heat Resistant	High Drain
Model number (CR2032 size)	CR2032	CR2032X	CR2032W	CR2032R
Operating temperature	-30℃ to +70℃	-40℃ to +85℃	-40℃ to +125℃	-30℃ 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	30ｍA	50ｍA

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).

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.

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.

Caution（PDF : 270KB）
Safety Data Sheet (SDS) for CR battery（PDF : 150KB）
Declaration of Conformity for EU Battery Directive（PDF : 27KB）
Information of Conformity for RoHS Directive（PDF : 34KB）
Letter of Confirmation for REACH SVHC 191 Substances（PDF : 28KB）
Best Management Practices for Perchlorate Material（PDF : 145KB）