CR (Coin Type Lithium Manganese Dioxide Battery)
The coin type lithium manganese dioxide battery (CR battery) is a small, lightweight battery with an operating voltage of 3V and the ability to operate over a wide temperature range. It has a wide range of applications, both for powering devices such as wristwatches and electronic calculators and can be used in all types of electronic devices mainly as memory and RTC backup.
Optimum for Memory and RTC Backup (Fig.1)
Displays long-term stable operating voltage at low load discharge.
High 3 volt energy density
High energy density. At 3 volts (nominal voltage), it has about twice the voltage of alkaline button batteries and silver oxide batteries.
Stable discharge characteristics through low internal resistance and high operating voltage
Employs highly conductive electrolyte, lowering internal resistance and providing stable operating voltage. This allows stable power to be obtained, with little change in operating voltage at room temperature as well as high and low temperatures.
Superior leakage resistance and excellent storage characteristics (Fig.2)
Employs a leak-resistant organic electrolyte, giving it better leakage resistance than battery types using alkaline electrolytes. Furthermore, the high degree of seal of the seal structure and application of sealant keep self-discharge to about 1% per year.
Superior high rate discarge characteristics (Fig.3)
Principle and Reactions
The coin type lithium manganese dioxide battery uses manganese dioxide (MnO2) as its positive active material, lithium (Li) as its negative active material, and an organic electrolyte.
|Positive reaction :||MnO2+Li++e- → MnOOLi|
|Negative reaction :||Li → Li++e-|
|Total reaction :||MnO2+Li → MnOOLi|
(Fig.1) Relationship between Discharge Current Consumption and Duration Time
(Fig.2) Discharge Characteristics after Storage
(Fig.3) High Rate Discharge Characteristics
UL Recognized Components
The coin type lithium manganese dioxide battery is a UL (Underwriters Laboratories Inc.) recognized component.
CR2032, CR2032H,CR2025, CR2016, CR1632, CR1620, CR1616, CR1220, CR1216
Certification number: MH12568
- -OA Machines (Fax, Copiers, Printers)
- -Notebook PCs
- -Desktop PCs
- -Electronic Dictionaries
- -Digital Still Cameras
- -Film Cameras
- -Portable CD/MD Players
- -Medical Instruments, Cash Registers
- -Electronic Meters (Gas, Water, Electricity)
- -Keyless Entry Systems
- -Portable Game Devices
- -Remote Controllers
- -FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors)
*1 Nominal capacity indicates duration until the voltage drops down to 2.0V when discharged at a nominal discharge current at 20 deg. C.
*2 When using these batteries at temperatures outside the range of 0 to +40 deg. C, please consult Maxell in advance for conditions of use.
*3 Dimensions and weight are for the battery itself, but may vary depending on the shape of terminals or other factors.
-Data and dimensions are not guaranteed. For further details, please contact us at your nearest Maxell office.
-Contents on this website are subject to change without notice.