Overview

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.

Features

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)

Construction

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.

Battery Reactions
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.

Recognized models:
CR2032, CR2032H,CR2025, CR2016, CR1632, CR1620, CR1616, CR1220, CR1216

Certification number: MH12568

Applications

  • -OA Machines (Fax, Copiers, Printers)
  • -Notebook PCs
  • -Desktop PCs
  • -PDAs
  • -Electronic Dictionaries
  • -Calculators
  • -Camcorders
  • -Digital Still Cameras
  • -Film Cameras
  • -Portable CD/MD Players
  • -Watches
  • -Medical Instruments, Cash Registers
  • -Electronic Meters (Gas, Water, Electricity)
  • -Keyless Entry Systems
  • -Portable Game Devices
  • -Remote Controllers
  • -FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors)

Specifications

ModelNominal
Voltage (V)
Nominal
Capacity
(mAh)*1
Nominal
Discharge
Current (mA)
Operating
Temperature
Range
(deg. C)
*2
Dimensions*3Weight
(g)*3
Data SheetsWith
terminals
Warnings
Diameter (mm)Height (mm)
CR2032H 3 240 0.2 -20 to +85 20.0 3.2 3.0 PDFファイルのダウンロード - PDFファイルのダウンロード
CR2032 3 220 0.2 20.0 3.2 3.0 PDFファイルのダウンロード PDFファイルのダウンロード
CR2025 3 170 0.2 20.0 2.5 2.5 PDFファイルのダウンロード -
CR2016 3 90 0.1 20.0 1.6 1.7 PDFファイルのダウンロード -
CR1632 3 140 0.1 16.0 3.2 1.9 PDFファイルのダウンロード -
CR1620 3 80 0.1 16.0 2.0 1.3 PDFファイルのダウンロード -
CR1616 3 55 0.1 16.0 1.6 1.1 PDFファイルのダウンロード -
CR1220 3 36 0.1 12.5 2.0 0.8 PDFファイルのダウンロード -
CR1216 3 25 0.1 12.5 1.6 0.6 PDFファイルのダウンロード -

*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.

Q922:
[Glossary of Battery Terms] : Internal short circuit
Q921:
[Glossary of Battery Terms] : Short circuit current
Q920:
[Glossary of Battery Terms] : Leakage resistance
Q919:
[Glossary of Battery Terms] : Utilization factor
Q918:
[Glossary of Battery Terms] : Electrolyte
Q928:
[Glossary of Battery Terms] : Active material
Q927:
[Glossary of Battery Terms] : Expiry date
Q926:
[Glossary of Battery Terms] : Aging
Q925:
[Glossary of Battery Terms] : Test after storage
Q924:
[Glossary of Battery Terms] : Storage
Q923:
[Glossary of Battery Terms] : Initial test
Q917:
[Glossary of Battery Terms] : Energy Density
Q916:
[Glossary of Battery Terms] : Capacity
Q915:
[Glossary of Battery Terms] : Duration time (Duration period)
Q914:
[Glossary of Battery Terms] : Polarization
Q913:
[Glossary of Battery Terms] : Charge
Q912:
[Glossary of Battery Terms] : Discharge characteristics (Discharge curve)
Q911:
[Glossary of Battery Terms] : Self discharge
Q910:
[Glossary of Battery Terms] : Over discharge
Q909:
[Glossary of Battery Terms] : Discharge
Q908:
[Glossary of Battery Terms] : Internal resistance
Q907:
[Glossary of Battery Terms] : End-point voltage (End voltage, Cutoff voltage, Final voltage)
Q906:
[Glossary of Battery Terms] : Load
Q905:
[Glossary of Battery Terms] : Nominal voltage
Q904:
[Glossary of Battery Terms] : Closed circuit voltage (CCV)
Q903:
[Glossary of Battery Terms] : Open circuit voltage (OCV)
Q902:
[Glossary of Battery Terms] : Rechargeable battery (Secondary battery)
Q901:
[Glossary of Battery Terms] : Primary battery

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