CR (Heat Resistant Coin Type Lithium Manganese Dioxide Battery)

Overview

Maxell's original sealing technology and highly heat-resistant material expands operating temperature range remarkably, making the batteries supremely suitable for automobile applications - for powering TPMS (Tire Pressure Monitoring System) sensors, for example.

Features

Wide operating temperature range: -40 deg. C to +125 deg. C
CR2450HR-Ex batteries can even be used at temperatures up to 150 deg. C, depending on other conditions*.

Superior leak-resistant characteristics even under high temperature and acceleration.

Can be used even under 2000G, which is equivalent to driving at 300km/h.

Electric characteristics are maintained after long periods of exposure to high temperature and humidity.
*When using at temperatures exceeding 85 deg. C, please consult Maxell in advance for conditions of use.

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

Storage Characteristics under High Temperatures

Very little deterioration in capacity due to high storage temperature of 80 deg. C, compared to other CR batteries.

Storage Characteristics under High Temperature/Humidity

Very little deterioration in internal resistance due to high humidity (60 deg. C/90%RH), compared to other CR batteries.

High Rate Discharge Characteristics

Applications

  • -TPMS (Tire-Pressure Monitoring System)
  • -ETC (Electronic Toll Collection System)
  • -Set-Top Boxes
  • -OA Machines (Fax, Copiers, Printers)
  • -Notebook PCs
  • -Desktop PCs
  • -Medical Instruments, Cash Registers
  • -FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors)
  • -Electronic Meters (Water, Gas, Electricity)

Specifications

ModelNominal
Voltage (V)
Nominal
Capacity
(mAh)*1
Nominal
Discharge
Current (mA)
Operating Temperature Range
(deg. C)*2
Acceleration ResistanceDimensions*3Weight
(g)*3
Data SheetsWith
Terminals
Warnings
Diameter (mm)Height (mm)
CR2450
HR
3 550 0.2 -40 to+125 Max. 2000G
*4
24.5 5.0 6.8 PDFファイルのダウンロード PDFファイルのダウンロード PDFファイルのダウンロード
CR2450
HR-Ex
525 -40 to+125
(max.150)
PDFファイルのダウンロード -
CR2050
HR
350 -40 to+125 20.0 5.0 4.1 PDFファイルのダウンロード 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 exceeding 85 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 terminal specifications and other factors.

*4 Equivalent to acceleration when driving at 300km/h, when attached to a 17-inch wheel

UL Recognized Components

The heat resistant coin type lithium manganese dioxide battery is a UL (Underwriters Laboratories Inc.) recognized component. (Technician Replaceable)

Recognized model: CR2450HR, CR2050HR
Certification Number: MH12568

About Maxell Heat Resistant CR batteries

Maxell Heat Resistant CR (lithium manganese dioxide) batteries are available only for equipment manufacturers as a built-in part. Therefore, Maxell does not supply these batteries for replacement directly to users of equipment with these batteries. When built-in Heat Resistant CR batteries need to be replaced, please contact your equipment manufacturer. If you are planning to use Maxell Heat Resitant CR batteries in your equipment as a built-in part, please contact Maxell.

-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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