cylindrical lithium manganese dioxide battery

Maxell’s cylindrical type lithium manganese dioxide battery realizes stable discharge characteristics with its original sealing structure, improved electrical-conductivity structure, and negative electrode material. This battery’s long-term reliability makes it ideal for use as a power source in industrial applications such as IoT devices and smart meters (e.g. gas, water, electricity). Battery packs can also be produced to meet special customer requirements. For details, please contact your nearest Maxell dealer or distributor.



Apr. 08, 2022 Update Data sheet for high-capacity cylindrical type CR battery “CR17500AU” added

Feb. 17, 2021 News Maxell develops cylindrical type lithium manganese dioxide battery “CR17500AU” with industry’s highest capacity suitable for IoT devices


High energy density

High energy density has been achieved by optimizing the filling rate of the material by means of a unique electrode structure.

Long-term reliability lasting more than 10 years*

The employment of a heat-resistant gasket and a laser-seal structure prevents water intrusion and electrolyte evaporation, ensuring long-term reliability that lasts more than 10 years*. The self-discharge rate is about 0.5% per year.

  • Designed lifetime at 20 deg. C when not yet used. Actual lifetime will vary depending on conditions such as discharge current and temperature.

Stable discharge characteristics

The original negative electrode material maintains low internal resistance even at high depths of discharge and ensures stable discharge.

Superior low-temperature characteristics

High safety due to internal short-circuit prevention structure

Supports various package design configurations

Package design proposals are available according to the customer’s needs. We have designed a wide range of packages for 1 to 35 batteries.

35 parallel batteries for outdoor usage

About Maxell Cylindrical Type CR batteries

Maxell Cylindrical Type 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 Cylindrical Type CR batteries need to be replaced, please contact your equipment manufacturer. If you are planning to use Maxell Cylindrical Type CR batteries in your equipment as a built-in part, please contact Maxell.

UL Recognized Components

The cylindrical type lithium manganese dioxide battery is a UL (Underwriters Laboratories Inc.) recognized component. (User Replaceable)

Recognized models:CR17450A, CR17335A, CR17450AH, CR17500AU
Certification number: MH12568


  • -Smart meters (e.g. gas, water, electricity)
  • -IoT devices
  • -Communication devices (e.g. 3G, LTE, LPWA)
  • -In-vehicle devices
  • -Security devices
  • -Memory backup power

Battery power system for IoT


Model NEW*3
CR17450AH CR17450A CR17335A
Nominal Voltage(V) 3 3 3 3
Nominal Capacity(mAh)*1 3500 3000 2500 1650
Nominal Discharge Current(mA) 1.0 1.0 5.0 5.0
Temperature Range (deg. C)
-40 to +85
Dimensions*2 Diameter(mm) 17 17 17 17
Height(mm) 50 45 45 33.5
Weight(g)*2 26 24 22 17
Data Sheets pdf pdf pdf pdf
With Terminals - pdf pdf pdf
Warnings pdf
UL Certification Number MH12568
  • Nominal capacity of CR17500AU indicates duration until the voltage drops down to 1.5V when discharged at a nominal discharge current at 20 deg. C.
    As for other models, nominal capacity indicates duration until the voltage drops down to 2.0V when discharged at a nominal discharge current at 20 deg. C.
  • Dimensions and weight are for the battery itself, but may vary depending on the shape of terminals or other factors.
  • Evaluation samples with the same specification as mass production are available. Please contact us at your nearest Maxell office for the latest information.
  • 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.


Principle and Reactions

The cylindrical type lithium manganese dioxide battery uses manganese dioxide (MnO2) as its positive active material and lithium (Li) as its negative active material.

Battery Reactions
Positive reaction : MnO2+Li++e- → MnOOLi
Negative reaction : Li → Li++e-
Total reaction : MnO2+Li → MnOOLi

Safety precautions

If misused, this battery may deform, leak (the liquid inside the battery may leak to the outside), generate heat, explode, or ignite.
Since such misuse may cause injury or equipment failure, please be sure to read and observe [Warnings and Cautions].

[Glossary of Battery Terms] : Internal short circuit
[Glossary of Battery Terms] : Short circuit current
[Glossary of Battery Terms] : Leakage resistance
[Glossary of Battery Terms] : Utilization factor
[Glossary of Battery Terms] : Electrolyte
[Glossary of Battery Terms] : Active material
[Glossary of Battery Terms] : Expiry date
[Glossary of Battery Terms] : Aging
[Glossary of Battery Terms] : Test after storage
[Glossary of Battery Terms] : Storage
[Glossary of Battery Terms] : Initial test
[Glossary of Battery Terms] : Energy Density
[Glossary of Battery Terms] : Capacity
[Glossary of Battery Terms] : Duration time (Duration period)
[Glossary of Battery Terms] : Polarization
[Glossary of Battery Terms] : Charge
[Glossary of Battery Terms] : Discharge characteristics (Discharge curve)
[Glossary of Battery Terms] : Self discharge
[Glossary of Battery Terms] : Over discharge
[Glossary of Battery Terms] : Discharge
[Glossary of Battery Terms] : Internal resistance
[Glossary of Battery Terms] : End-point voltage (End voltage, Cutoff voltage, Final voltage)
[Glossary of Battery Terms] : Load
[Glossary of Battery Terms] : Nominal voltage
[Glossary of Battery Terms] : Closed circuit voltage (CCV)
[Glossary of Battery Terms] : Open circuit voltage (OCV)
[Glossary of Battery Terms] : Rechargeable battery (Secondary battery)
[Glossary of Battery Terms] : Primary battery

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