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Limno2 battery CR2035 3.0V

LiMnO2 Battery

High-Energy LiMnO₂ Batteries for Demanding Applications

The leading Lithium-Manganese Dioxide (Li-MnO₂) Batteries Manufacturer in China

The LiMnO₂ battery is a non-rechargeable battery, consisting mainly of lithium manganese dioxide. The LiMnO₂ primary battery normally presents a 3.0V nominal voltage for a single cell and 9 volt and 12 volt for battery packs.

These manganese dioxide lithium batteries can be customized to different shapes in coin style of CR2032, CR2450, CR2035, and CR1616, cylindrical style of CR123a, CR2, CR14505, CR9V, and pouch style of CP225040, CP603450, CP502440, CP603450, or any customized size.

Besides different shapes, different temperature performance of LiMnO₂ batteries can also be produced in VTCBATT’s modern factory. Our customized LiMnO₂ battery can work from -40℃ to +125℃ to satisfy extreme environments under high temperature and low temperature.

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Key Advantages

With the extraordinary features, our LiMnO₂ battery can not only power your device in wide temperature, but also provide ultimate safety even under improper operation to save potential risk and damage.

limn02 battery Feature 3
Ultimate Safety

Ultimate safety can be guaranteed by an internally integrated PTC in the cells, even under improper activities of reverse charging, short circuit, and extreme heat.

limn02 battery Feature 1
Wide Temperature

Satisfy stable power demand under extreme environments of temperature range from -40℃ to +125℃.

limn02 battery Feature 2
Low Cost

With dozens of automatic lines, our large-scale modern production ensures the aggressive competitiveness of our LiMnO₂ battery price.

limn02 battery Feature 4
Low-self Discharge

Featuring ultra-low self-discharge rate to 1%, the storage life of the LiMnO₂ battery can be prolonged up to 10 years.

Large-scale Automatic Production

Thanks to the large-scale modern facility, every battery manufacturing process is monitored in a smart, automatic EMS system with all the data recorded for quality traceability.
Due to the manufacturing efficiency and automation, our battery prices are very competitive in the market for various applications.

Large-scale Automatic Production

LiMnO₂ Battery Standard Technical Specifications

Technical ParameterSpecification Value
ChemistryLithium Manganese Dioxide (Li-MnO2)
Nominal Voltage3.0V
Open Circuit Voltage3.2V
Cut-off Voltage2.0V
Energy Density220–280 Wh/kg
Shelf Life10 Years
Self-discharge<1% / year
Operating Temperature-30°C to 80°C
Storage Temperature0°C to 35°C

Download Center (MSDS UN38.3)

CP753235 2000mAh MSDS Report
UN38.3
CP753235 2000mAh UN38.3 Report
CR123A MSDS Report
Qiuck Shipping
CR123A MSDS Report
Qiuck Shipping
CR123A Shipping
CR2032 MSDS Report
LiMnO2 Battery Discharge Curve&Discharge Current

Lithium battery discharge performance under different conditions

① Current discharge curves at different currents (25°C)

Chart 1

② Discharge curves at different temperatures (20mA to 2.0V)

Chart 2

③ Discharge curves at different temperatures (0.9A 3sec.on/27sec.off)

Chart 3

④ Discharge curve (20mA to 2.0V)

Chart 4

 

Where Are Li-MnO₂ Batteries Used? Common & Industrial Applications?

  • Limno2 Battery in Portable Devices
    Portable Devices

    Featuring a small coin size and stable amperage output, the manganese dioxide lithium battery is widely used in watches, calculators, electronic scales, and E-book readers.

  • Limno2 Battery in Automotive Application
    Automotive applications

    Whether for key fobs, remote car access, or TPMS (tire pressure monitoring systems) of vehicle sensors, or onboard electronics of dashboard instruments, the battery can provide reliable power, stably and continuously, for ultra-long life.

  • Limno2 Battery in Medical Devices
    Medical Devices

    Medical devices, such as digital thermometers, blood glucose meters, pulse oximeters, and hearing aids, have strict power demands for long life, ultimate safety, and consistent reliability. Besides the extraordinary features of 3.0V voltage output and 230 Wh/kg high energy density, the key feature of 1% low self-discharge rate allows these devices can be used for 10 years.

  • Limno2 Battery in Portable Devices
    Military and Aerospace

    Military and aerospace are used in extremely harsh environments with temperatures ranging from -40℃ to +125℃. With chemistry and construction customization, the VTCBATT LiMnO₂ battery can work reliably and continuously under a wide temperatures.

  • Photography and Flashlights
    Photography and Flashlights

    VTCBATT CR123A photo battery can always provide a stable 3.0V voltage output, high pulse current, and long storage life for professional digital cameras, camcorders, and flashlights.

  • Wearables and IOT devices
    Wearables and IOT devices

    The flexible pouch lithium battery can be fully customized in a compact size, high drain current, and wide temperature range, which are tailor-made for GPS trackers, smart tags, IOT sensors, and cargo trackers.

Different Limno2 Battery Models

1. Coin Cell Non-Rechargeable LiMnO₂ Battery (CR Series)

MODELTypeVoltage (V)Capacity (mAh)Dimensions (mm)Certification
CR12203V Primary Battery3.040.012.5 x 2.0UL,CE,UN38.3,IEC60086-4
CR12253V Primary Battery3.050.012.5 x 2.5UL,CE,UN38.3
CR16163V Primary Battery3.050.016 x 1.6UL,CE
CR16203V Primary Battery3.070.016 x 2.0UL,CE,UN38.3
CR16323V Primary Battery3.0120.016 x 3.2UL,CE,UN38.3,IEC60086-4
CR20163V Primary Battery3.075.020 x 1.6UL,CE,UN38.3
CR20253V Primary Battery3.0150.020 x 2.5UL,CE,UN38.3,IEC60086-4
CR20323V Primary Battery3.0230.020 x 3.2UL,CE,UN38.3,CB,IEC60086-4
CR20503V Primary Battery3.0320.020 x 50UL,CE,UN38.3,IEC60086-4
CR24303V Primary Battery3.0300.024.5 x 3.0UL,CE,UN38.3
CR24503V Primary Battery3.0600.024.5 x 5.0UL,CE,UN38.3,CB,IEC60086-4
CR24773V Primary Battery3.01100.024.5 x 7.7UL,CE,CB,UN38.3
CR1632WT3V Primary Battery -40 ~ +85°C3.0120.016 x 3.2UL,CE,UN38.3,IEC60086-4
CR2025WT3V Primary Battery -40 ~ +85°C3.0150.020 x 2.5UL,CE,UN38.3,IEC60086-4
CR2032WT3V Primary Battery -40 ~ +85°C3.0210.020 x 3.2UL,CE,UN38.3,CB,IEC60086-4
CR2050WT3V Primary Battery -40 ~ +85°C3.0320.020 x 50UL,CE,UN38.3,IEC60086-4
CR2430WT3V Primary Battery -40 ~ +85°C3.0300.024.5 x 3.0UL,CE,UN38.3
CR2450WT3V Primary Battery -40 ~ +85°C3.0600.024.5 x 5.0UL,CE,UN38.3,CB,IEC60086-4
CR2477WT3V Primary Battery -40 ~ +85°C3.01000.024.5 x 7.7UL,CE,CB,UN38.3
CR2032WTH3V Primary Battery -40 ~ +125°C3.0210.020 x 3.2UL,CE,UN38.3,CB,IEC60086-4
CR2450WTH3V Primary Battery -40 ~ +125°C3.0600.024.5 x 5.0UL,CE,UN38.3,CB,IEC60086-4

2. Coin Cell Rechargeable LiMnO₂ Battery

MODELTypeVoltage (V)Capacity (mAh)Dimensions (mm)Certification
ML12203V Rechargeable Battery3.016.012.5 x 2.0UN38.3
ML20323V Rechargeable Battery3.065.020 x 3.2UN38.3

Cylindrical LiMnO₂ Battery Specifications

MODELNominal Voltage (V)Nominal Capacity (mAh)Standard Discharge Current (mA)Max. Discharge Current (mA) ContinuousMax. Discharge Current (mA) PulseMax. Dimensions (mm) Diam.(D)Max. Dimensions (mm) Height(H)Weight (g)IEC Reference
CR1/3N3160276011.610.83.3CR11108
CR1425038501810050014.5259.0CR14250
CR1450531500101000300014.550.517.0CR14505
CR238501800150015.527.011.0CR15H270
CR123A316001150035001734.516.5CR17345
CR17335316001100030001733.516.5CR17335
CR174503250011000300017.045.023.0CR17450
CR17505328001100030001751.526CR17505
2CR56160011000300034.0 / 17.045.038.02CR5
CR-P26160011000300035.0 / 19.536.038.0CP-P2
CRV333200201500350028.6 / 14.452.235.0CRV3
CP9V91200115030026.5 / 17.548.541.0U9VL
CR2H310001800150015.52711CR2H
CR2/3AH316001100030001733.516.5CR2/3AH
CRAH32500110003000174523CRAH
CRLAH328001100030001751.524.8CRLAH

Primary LiMnO₂ Pouch Cell (CP Series) Specifications

MODELNormal Voltage (V)Normal Capacity (mAh)Max. Discharge Current (mA)Max. Pulse Discharge Current (mA)Dimensions (mm)Operating TemperatureWeight (g)
CP0829223.0V6010200.8 x 29.5 x 22.5-20°C~+71°C1.5
CP2813143.0V5010202.8 x 51 x 3.5 x 14.5-20°C~+71°C1.5
CP3019193.0V15030503.2 x 20.0 x 20.0-20°C~+71°C2.0
CP1131303.0V16510501.15 x 31 x 30-20°C~+71°C1.5
CP3013303.0V20040803.0 x 13.5 x 30.5-20°C~+71°C2.2
CP2525253.0V240501002.6 x 25 x 25-20°C~+71°C2.5
CP0836453.0V250501000.8 x 36.5 x 45.5-20°C~+71°C3.0
CP0842483.0V320501000.8 x 45.5 x 48-20°C~+71°C3.0
CP2238303.0V3801003002.3 x 38.5 x 30.5-20°C~+71°C3.6
CP1149513.0V3801002001.1 x 49 x 51-20°C~+71°C3.7
CP1042483.0V4001002001.0 x 45.5 x 48-20°C~+71°C3.7
CP1051403.0V4001002001.0 x 54.5 x 40-20°C~+71°C3.8
CP1048483.0V4001002001.0 x 48 x 48-20°C~+71°C3.7
CP1533503.0V4501002001.5 x 33 x 50-20°C~+71°C4.0
CP3025253.0V450702002.95 x 25.5 x 25.5-20°C~+71°C4.0
CP1633503.0V4501002001.6 x 33 x 50-20°C~+71°C4.0
CP2236383.0V5001002002.2 x 36 x 38-20°C~+71°C4.5
CP1638503.0V5201002001.6 x 38 x 50-20°C~+71°C4.5
CP3024253.0V5502003003.1 x 24 x 25-20°C~+71°C4.0
CP1246533.0V5502003001.25 x 47.5 x 53.5-20°C~+71°C4.5
CP2038333.0V5502003002.0 x 38 x 33-20°C~+71°C4.5
CP5626233.0V6502003005.6 x 27 x 23-20°C~+71°C6.5
CP2438423.0V7001002002.4 x 38 x 42-20°C~+71°C6.0
CP2838363.0V7001002002.8 x 38 x 36-20°C~+71°C6.0
CP2044363.0V7001503002.0 x 44 x 36-20°C~+71°C5.5
CP3724403.0V7001503003.7 x 24 x 40-20°C~+71°C6.5
CP5225303.0V7501503005.2 x 25.5 x 30.5-20°C~+71°C7.0
CP3032403.0V7501503003.1 x 32 x 40-20°C~+71°C7.0
CP5523383.0V10003005005.6 x 23 x 38-20°C~+71°C7.0
CP3027523.0V10303005003.0 x 27 x 52-20°C~+71°C7.0
CP9733403.0V10503005009.7 x 33.0 x 40.0-20°C~+71°C12.0
CP6518483.0V12004008006.5 x 17.5 x 48.5-20°C~+71°C8.5
CP5033333.0V12004008005.0 x 33 x 33-20°C~+71°C9.0
CP5036483.0V12501503005.1 x 36 x 48-20°C~+71°C9.0
CP5025373.0V12003005005.1 x 25 x 37-20°C~+71°C9.5
CP8027323.0V12001503008.2 x 27.5 x 32.5-20°C~+71°C10.0
CP6038483.0V12503005006.0 x 38 x 48-20°C~+71°C12.0
CP7022363.0V13003005007.2 x 22 x 36-20°C~+71°C11.0
CP3034503.0V13003005003.2 x 34 x 50-20°C~+71°C10.0
CP4027503.0V13503005004.1 x 27 x 50-20°C~+71°C11.0
CP383747F3.0V13503005004.3 x 31.5 x 47.5-40°C~+60°C11.5
CP6027453.0V13502505006.3 x 27.0 x 45.5-20°C~+71°C13.0
CP4030503.0V14504007004.0 x 30 x 50-20°C~+71°C11.5
CP4038383.0V15006009004.1 x 38 x 38-20°C~+71°C11.0
CP7024403.0V15005009007.0 x 24 x 40-20°C~+71°C14.0
CP703348315005009007.0 x 33 x 48-20°C~+71°C15.0
CP5027583.0V16005009005.2 x 27 x 58-20°C~+71°C13.0
CP5036503.0V16505009005.0 x 36 x 50-20°C~+71°C13.0
CP4040503.0V18005009004.0 x 40 x 50-20°C~+71°C13.5
CP6026603.0V20005009006.0 x 26.5 x 60-20°C~+71°C16.5
CP5026603.0V20005009005.0 x 26.5 x 60-20°C~+71°C16.5
CP6035603.0V20005009006.0 x 35 x 60-20°C~+71°C17.5
CP8038683.0V280080015008.0 x 38 x 68-20°C~+71°C26.0
CP8038703.0V320080015008.0 x 38 x 70-20°C~+71°C28.0
Do you have a Panasonic CR123a 1550mah 3v lithium LiMnO₂ button top photo battery?

A: Yes. We can provide CR123A replacement for Panasonic, featuring the same performance. 

Do you have the LiMnO₂ battery MSDS?

A: Yes. We have the limno2 battery MSDS for different models. You can send mail to info@vtcbatt.com.

How can you dispose of a LiMnO₂ battery in a household?

A: For LiMnO₂ battery disposal, you can’t drop the batteries into the regular household bins directly,which will cause a short circuit and fire.

 

 First, you need to fully discharge the batteries to 0V to avoid the risk of a short circuit. 

Some people even suggest salt immersion, which is actually proven to be invalid. 

Even if you want to store them, you need to keep batteries in a plastic bag or box instead of pockets or metal containers.

 

Second, you need to avoid any exposure to a leaked LiMnO₂ battery, especially sulfuric acid on skin and eyes, which will not only cause burns and irritation of the respiratory system, but also bad feelings of redness, tearing, and burns.

 

Third, you need to find a manganese dioxide battery disposal near you, while most supply stores, such as Best Buy, Home Depot, and Walmart, provide battery recycling trash.

 

Following the local battery disposal regulations to find “battery disposal near me” is the best way to dispose of the batteries. Otherwise, you have to find a hazardous waste company to dispose which are under a cost.

Is the LiMnO₂ battery rechargeable?

 A: Normally, the lithium-manganese dioxide (Li-MnO₂) batteries are not rechargeable, which is a primary lithium battery with the danger of being recharged. We only have ML2032 and ML1220 two rechargeable LiMnO₂ batteries.

Do you have 12v lithium battery pack limno2?

Yes. We can assemble four cells of 3.0V LiMnO₂ cells to 12V packs, satisfying the 12V output voltage demand of different devices.

What is the shelf life of LiMnO₂ batteries?

A: Thanks to the low self-discharge rate of 1% per month, the LiMnO₂ batteries can power a low-consumption device for 10 years. But the power consumption is higher, then the shelf life will be shorter.

What’s the difference between lithium vs a lithium manganese dioxide battery(LiMnO₂ battery)?
  • 1. Voltage difference
    Different from normal 3.6V or 3.7V lithium-ion batteries, Li-MnO₂ is a primary (non-rechargeable) battery with a 3.0V nominal voltage.
  • 2. Battery raw materials difference
    Li-MnO₂ batteries use lithium metal as the anode and manganese dioxide as the cathode, while typical lithium-ion batteries use graphite as the anode and lithium cobalt oxide (or other intercalation compounds) as the cathode.
    The Li-MnO₂ battery also excels in a low self-discharge rate of about 1% per month, compared to roughly 3% per month for many lithium-ion cells.
  • 3. Rechargeable or Non-rechargeable
    Normally, Li-MnO₂ batteries are non-rechargeable (primary), whereas common lithium-ion batteries are rechargeable (secondary).
  • 4. Term difference
    “Lithium battery” is a broad category that includes Li-MnO₂ batteries and many other types: lithium metal batteries, lithium polymer, lithium-ion, lithium thionyl chloride, lithium sulfur dioxide, lithium carbon monofluoride, etc.
    The Li-MnO₂ cell is a specific type and appears in coin cells (e.g., CR2032, CR2450), cylindrical cells (e.g., CR123A, CR9V), and pouch cells (e.g., CP603450, CP503450).
  • 5. Application difference
    Li-MnO₂ batteries are typically used in small devices such as hearing aids, watches, cameras, calculators, and electronic scales.
    Lithium-ion batteries are used much more widely — solar systems, lighting, energy storage, EVs, phones, power tools, laptops — applications for which Li-MnO₂ is generally unsuitable.
  • 6. Price difference
    Generally, Li-MnO₂ batteries are much cheaper than rechargeable lithium-ion batteries and are commonly available at retail stores (e.g., Best Buy, Home Depot, Walmart). Rechargeable lithium-ion packs for power tools, phones, laptops, and EVs are usually sold through more specialized or industrial channels.
Do you have limno2 battery 3 volt cr2035 coin battery?

    Yes. We have plenty of stock of this CR2035 battery, and you can also get it directly from our worldwide dealers.

LiMnO2 vs Other Primary Batteries?
Technical FeatureLithium Manganese Dioxide (Li-MnO2)Lithium Thionyl Chloride

(Li-SOCl2)

Lithium Iron Disulfide

 (Li-FeS2)

Alkaline

(Zn/MnO2)

Nominal Voltage3.0 V3.6 V1.5 V1.5 V
Energy DensityHighUltra-HighHighModerate to Low
Shelf Life10 years15+ years10–20 years5–7 years
Operating Temperature-40°C to +60°C-55°C to +85°C-40°C to +60°C-10°C to +50°C
High Current / Pulse CapabilityExcellent (Spiral configuration)Poor (Bobbin) / Fair (Spiral)ExcellentPoor (Severe voltage drop)
Passivation EffectNoneSevere (Requires active management)NoneNone
Leakage RiskExtremely LowExtremely LowExtremely LowHigh (Potassium Hydroxide slurry)
Relative Cost StructureModerateHighModerate-HighVery Low
How to Choose a LiMnO2 Battery?

Optimize your power design by balancing primary Li-MnO2 electrochemistry with your device’s physical space constraints, dynamic current profiles, and operating temperatures. Use these 5 engineering steps to match your custom pack requirements. 

🛠️ The 5-Step Selection Protocol

Step 1: System Voltage

Li-MnO2 cells deliver a nominal OCV of 3.0V with a flat discharge plateau down to a 2.0V cut-off.

  • 3V Single Cell: Powers low-power MCUs, LPWAN modules (LoRa/NB-IoT), and smart utility meters.
  • 6V / 9V / 12V Packs: Series configurations (2S/3S/4S) for wireless valves, telematics, and medical hardware.

Step 2: Form Factor & Packaging

Enclosure space constraints dictate the cell architecture:

  • Coin Cells (CR Series): Low-profile footprints for asset tags, RTC backups, and medical wearables.
  • Cylindrical Cells: Choose Bobbin type for maximum capacity, or Spiral-wound type for continuous pulse loads.
  • Pouch & Thin-Film: Flexible aluminum soft-packs down to 0.4mm thickness for smart cards and ESL tags.
  • Custom Assemblies: Turnkey configurations in shrink-wrap or rigid ABS casings with custom wire harnesses.

Step 3: Load Profile & Current

Match the internal cell structure to your duty cycle to prevent premature voltage drops:

  • Low Drain (< 10 mA): Optimized for micro-ampere sleep states and low-frequency telemetry. Uses bobbin construction.
  • Pulse Loads (10mA} – 500mA): For wireless sensors with periodic RF/BLE transmission windows. Requires spiral cells to prevent voltage dips.
  • High Pulse (> 500 mA): Built for cellular modems (LTE-M/GSM bursts) and motorized actuators. Delivers instant power with zero passivation delay.

Step 4: Operating Temperature

Thermal environments dictate the internal electrolyte formulation:

  • Standard (0  +35 ): Indoor applications. Secures a 10-year shelf life.
  • Sub-Zero (Down to -40 ): Utilizes low-viscosity organic electrolytes to maintain ion mobility.
  • Extreme Heat (Up to +125 ): Features hermetic glass-to-metal seals for downhole drilling and automotive dashboard loggers.

Step 5: OEM/ODM Customization

We modify standard cells to match your production line integration requirements:

  • Dimensions: Custom pouch sizing tailored to tight physical footprints.
  • Connectors & Wires: Pre-terminated JST, Molex, or Hirose interfaces with specific AWG wire leads. Eliminates manual soldering.
  • Labeling: Permanent customer branding, serial tracking codes, and international compliance marks (UL, CE, UN38.3).
  • PCM/BMS Integration: Hardware-level protection circuit modules against external short-circuits and over-discharge.

 

System VoltagePackage TypeDischarge Current ProfileOperating TemperatureTarget ApplicationsPrimary OEM Customization Elements
3.0 VCoin CellLow DrainRoom Temp   (0℃  to +35℃  )RTC Backup, TPMS Sensors, Smart TagsCustom SMD solder tabs, custom labeling
3.0 VCylindrical (Bobbin)Low Drain / Light PulseExtended (-40℃  to 85℃ )Smart Water/Gas Meters, AMR SystemsAxial wire leads, JST connector termination
3.0 VCylindrical (Spiral)High Pulse (>500mA)Extreme (-40℃  to +125℃ )NB-IoT Tracking, Oil/Gas Telemetry, Automotive E-CallCustom wire harness, extreme temperature seals
3.0 VPouch CellLow Drain / PulseRoom Temp (-10 ℃ to +60℃ )Electronic Shelf Labels, Smart CardsCustom length/width/thickness pouch profiling
6.0 V / 9.0 VMulti-Cell PackPulse / High PulseLow Temp (Down to -40℃ )Wireless Security Alarms, Defense SystemsRigid ABS enclosure, integrated Short-Circuit PCM
12.0 VHeavy-Duty PackHigh PulseHigh Temp (Up to +85℃ )Industrial Valve Actuators, Pipeline MonitorsHigh-gauge AWG wires, Molex connector, Custom BMS

💡 Engineering Checkpoint:

  • Dynamic Loads: Verify pulse ratings if the hardware handles <5 μA sleep and >1A communication bursts.
  • Zero Passivation: The spiral-wound Li-MnO2 battery eliminates voltage delays in Li-SOCl2 batteries for instant power delivery.
  • Pack Safety: Integrated PTC, NTC, and fuses enforce hard thermal and short-circuit protection boundaries.
What is the Limno2 battery's Application Case do you have?

Brazil Smoke Detector

Case 1: Supplied tens of thousands of CR123A (1600mAh) batteries to the leading smoke-detector manufacturer, Jxx, in Brazil. The project successfully met rigorous Latin American residential safety regulations, proving a dependable 10-year service life in the field.

 

Asset GPS Tracker CP Pouch Battery 

Case 2: Cooperated closely with a top-tier European tracker manufacturer. They deploy our ultra-thin CP pouch cells in global logistics GPS trackers. The batteries ensure stable power output and maintain reliable asset tracking even in extreme cold down to -30°C. 

Medical Device    

Case 3: High-capacity CR2450 coin cells integrated into critical medical monitors, guaranteeing a 5-year maintenance-free lifecycle with an ultra-low self-discharge rate. 

Military Electronics  

An Australian defense integrator uses our high-pulse-rate spiral Li-MnO2 cells for tactical telemetry nodes that experience extreme thermal shifts. The hardware requires zero-passivation power over a -40°C to +125°C temperature range. Laser-welded glass-to-metal seals prevent leakage during supersonic expansion, holding a stable 2.4V rail under sudden >1.5A bursts.

Is LiMnO2 a lithium metal battery?

Yes. Li-MnO2 battery is classified as a lithium metal battery. It utilizes a solid lithium metal anode paired with a manganese dioxide cathode. Because it uses pure metallic lithium rather than lithium ions intercalated in graphite, it is strictly categorized as a primary (non-rechargeable) lithium metal cell under international transport and safety regulations (UN3090).

What is CR battery?

A CR battery is an IEC-designated primary (non-rechargeable) lithium manganese dioxide Li-MnO2 cell. In the ‘CR’ prefix, ‘C’ defines the lithium metal anode/manganese dioxide cathode chemistry, while ‘R’ denotes a round or cylindrical form factor. Operating at a 3.0V nominal rail, these cells are the global industry standard for low-power IoT assets, RTC backups, and automotive TPMS nodes due to their zero-passivation characteristics and 10-year shelf life. 

What is the difference between CR2032 and CR2450?

Both CR2032 and CR2450 share the identical 3.0V Lithium Manganese Dioxide Li-MnO2 chemistry and IEC classification; their practical divergence comes down to physical envelope volume, energy capacity, and load discharge boundaries:

  • Dimensional Footprint: The naming convention dictates their physical boundaries (the first two digits denote diameter, the last two height). CR2032 measures 20.0 mm x 3.2 mm, while CR2450 measures 24.5 mm x 5.0 mm. Switching between them directly reshapes your PCB layout space and mechanical enclosure clearances.
  • Capacity & Runtime Lifespan: A standard CR2032 delivers 220–240 mAh, whereas the larger CR2450 packs 600–620 mAh. For identical IoT sensor duty cycles, the CR2450 yields ~2.7x longer operating life, making it the benchmark selection for 5+ year maintenance-free deployment windows.
  • Transient Pulse Handling: Thanks to a larger internal electrode surface area, the CR2450 doubles the load capability of the CR2032, supporting a maximum continuous current of 6.0 mA and a peak pulse rating of 30.0 mA. This prevents severe transient voltage sag during power-hungry BLE or RF data transmission windows.

     CR2032 vs CR2450 Engineering Table 

Technical ParameterCR2032CR2450Engineering Impact / Application Delta
IEC ChemistryLi-MnO2 (Lithium Metal)Li-MnO2 (Lithium Metal)Identical 3.0V nominal OCV and 2.0V cut-off discharge plateau behavior.
Diameter20.0 mm24.5 mmCR2450 requires a larger radial PCB landing zone layout.
Height3.2 mm5.0 mmCR2450 is 1.8mm thicker, impacting ultra-low-profile hardware enclosures.
Nominal Capacity220 – 240 mAh600 – 620 mAhCR2450 delivers ~2.7x higher energy density for extended field reliability.
Cell Weight~3.0 g~6.2 gMass footprint doubles. Critical constraint for weight-sensitive medical wearables.
Max Continuous Current3.0 mA6.0 mACR2450 handles higher base steady-state loads without internal resistance spikes.
Max Pulse Capability15.0 mA30.0 mACR2450 minimizes voltage dips during high-current wireless transmission bursts.
Target ApplicationsRTC Backup, Key fobs, Active Tracking TagsElectronic Shelf Labels (ESL), Patient Monitors, Smart ValvesSelection Guide: Choose CR2450 if the enclosure tolerates thickness and the project demands 5+ year runtime.
Can LiMnO2 batteries explode?

Yes. Li-MnO2 cells can explode under severe electrical or thermal abuse. They utilize a pure lithium metal anode paired with a flammable organic electrolyte. External short circuits or forced over-discharge trigger violent thermal runaway. Exceeding the separator’s melting point causes the same catastrophic breakdown. Rapid gas propagation drives internal pressure buildup. Industrial packs must deploy hardware-level safety boundaries. Integrated PCMs and thermal fuses isolate these electrical faults. Precision structural venting safely handles unexpected casing expansion. 

How long can LiMnO2 batteries be stored?

Li-MnO2 batteries have a 10-year shelf life under controlled storage. The chemistry maintains an annual self-discharge rate below 1% at room temperature. Ambient storage between +10°C and +25 °C optimizes long-term capacity retention. Temperatures exceeding +60 °C accelerate electrolyte decomposition and cause permanent degradation. Unlike Li-SOCl2 cells, Li-MnO2 does not develop a restrictive passivation layer. The cells deliver instantaneous pulse currents immediately after multi-year storage without voltage delay.

Can LiMnO2 batteries work below -40°C?

Yes, but only certain LiMnO2 battery models can operate below -40°C. The low temperature performance depends strictly on cell design. Standard Li-MnO2 cells suffer severe electrolyte crystallization and a capacity drop below -40°C. To handle these deep-freeze environments, we engineer specialized low-viscosity organic electrolyte formulations and high-pulse spiral architectures. These specific configurations maintain low internal resistance below -40°C.The battery can deliver steady burst currents without voltage rail collapse. Review your model numbers with our engineering team to verify compatibility with extreme-low-temperature conditions. 

Can LiMnO2 batteries work above 100°C?

Yes, but only certain LiMnO2 battery models can operate above 100 °C. Standard Li-MnO2 cells are prone to separator degradation and thermal runaway above 60°C. Not all models support high-temperature operation. For environments up to 125°C, we manufacture specialized cells utilizing hermetic glass-to-metal seals (GTMS) and modified electrolytes. These engineering controls prevent gas evolution and casing expansion. You must verify the operational thermal profiles with our team to determine the correct high-temperature part number.

Can VTCBATT customize LiMnO2 battery packs?

Yes. We customize primary Li-MnO2 packs directly at our production facilities. Our team configures standard cells to match your hardware layout. We build custom multi-cell series or parallel assemblies in different voltages and capacities. Factory-welded JST, Molex, or Hirose connectors eliminate manual assembly soldering. We integrate dedicated hardware PCMs to safely handle wide-dynamic-range pulse loads. Send your mechanical boundaries and load duty cycles to lock down a production-ready specification. 

What brands can VTCBATT replace?

VTCBATT cells cross-reference directly with Tier-1 industrial brands. We match standard IEC, UL, and UN38.3 form factors to replace Panasonic, Maxell, Murata, and FDK. Our hardware aligns with their nominal 3.0V rails and internal resistance limits. This engineering parity simplifies global multi-sourcing. You can swap cells without altering PCB layouts or enclosure plastics. Email your current competitor part numbers to get the cross-reference datasheets. 

What happens if it is recharged?

Do not recharge primary Li-MnO2 batteries. Forcing current into a lithium metal anode causes internal dendrite growth. These crystalline structures pierce the separator, triggering a direct short circuit. The resulting exothermic reaction leads immediately to thermal runaway. Rapid electrolyte vaporization drives severe pressure buildup, causing casing rupture, fire, or explosion. To prevent accidental charging from power rails, your circuit layout must integrate blocking diodes or hardware isolation.

Custom LiMnO₂ Battery Design Options 

Different electronic devices require different battery connection structures.VTCBATT provides customized LiMnO₂ battery terminal solutions, including tab position, tab length, solder pin terminals, and connection structures.Our engineering team can optimize the battery terminal design according to the customer’s PCB layout, installation space, and electrical requirements.

-Custom Terminal and Tab Design for LiMnO₂ Batteries

Custom LiMnO₂ Battery Tab Design for OEM Applications

How to Safely Use LiMnO₂ Battery in Industrial Applications? 

Why Does LiMnO₂ Battery Require Reverse Current Protection?

For electronic devices powered by LiMnO₂ coin cells or cylindrical cells, engineers should prevent reverse current caused by external power sources.

When incorporating a lithium primary battery into a circuit powered by an independent main power source, protective devices shall be used in order to prevent charging the primary battery from the main power source, for example:

a)a blocking diode and a current limiting resistor (see Figure a);

b)two series blocking diodes (see Figure b);

c)circuits with a similar blocking function based on two or more independent protective devices: provided the first protective device is capable of limiting the charging current through the lithium battery to the normal reverse current specified by the manufacturer, which can be applied to the battery during its operating life, while the second protective device is capable of limiting the charging current to the abnormal charging current specified by the battery manufacturer. The circuit shall be so designed that at least one of these protective devices remains operational when any one component of the circuit fails.

How reliable is a LiMnO₂ battery after long-term storage? 

-Reliability Comparison

According to Van’t Hoff’s law, for every 10°C rise in temperature, the rate of chemical reaction increases by a factor of 2 to 4. According to this kinetic law of chemical reaction and battery production practice, it is generally believed that battery storage at 60 °C for 20 days is equivalent to 1 year at room temperature.In the actual production process, we also usually use this method to test and evaluate the service life of the product

How Does VTCBATT Prevent LiMnO₂ Battery Leakage?

For primary lithium batteries used in meters, medical devices, and industrial electronics, leakage prevention is critical.VTCBATT evaluates sealing reliability through thermal shock testing, including temperature cycling between high and low temperature conditions. The tested cells showed no liquid leakage after thermal shock evaluation.

70°C / 24 h High-Temperature Storage Test Results

Weight, open-circuit voltage, internal resistance and closed-circuit voltage were recorded before and after 24 hours of storage at 70°C.

VTC CR123A Semi-Sealed


5 Samples · No Leakage

HD-1

Before Storage

Weight: 15.9980 g
OCV: 3.267 V
IR: 252 mΩ
CCV: 3.015 V
After Storage
Weight: 15.9956 g
OCV: 3.278 V
IR: 321 mΩ
CCV: 2.954 V
Weight loss: 0.02%
Leakage: No

HD-2

Before Storage

Weight: 15.8600 g
OCV: 3.257 V
IR: 216 mΩ
CCV: 3.008 V
After Storage
Weight: 15.8580 g
OCV: 3.272 V
IR: 272 mΩ
CCV: 3.003 V
Weight loss: 0.01%
Leakage: No

HD-3

Before Storage

Weight: 15.9990 g
OCV: 3.262 V
IR: 255 mΩ
CCV: 2.987 V
After Storage
Weight: 15.9981 g
OCV: 3.272 V
IR: 315 mΩ
CCV: 2.957 V
Weight loss: 0.01%
Leakage: No

HD-4

Before Storage

Weight: 16.0045 g
OCV: 3.253 V
IR: 231 mΩ
CCV: 2.978 V
After Storage
Weight: 16.0028 g
OCV: 3.268 V
IR: 293 mΩ
CCV: 2.975 V
Weight loss: 0.01%
Leakage: No

HD-5

Before Storage

Weight: 15.9506 g
OCV: 3.253 V
IR: 268 mΩ
CCV: 2.942 V
After Storage
Weight: 15.9492 g
OCV: 3.270 V
IR: 336 mΩ
CCV: 2.939 V
Weight loss: 0.01%
Leakage: No

Other Factories CR17335 Fully Sealed


5 Samples · No Leakage

E-1

Before Storage
Weight: 16.1226 g
OCV: 3.260 V
IR: 625 mΩ
CCV: 2.651 V
After Storage
Weight: 16.1196 g
OCV: 3.268 V
IR: 621 mΩ
CCV: 2.666 V
Weight loss: 0.02%
Leakage: No

E-2

Before Storage
Weight: 15.3833 g
OCV: 3.151 V
IR: 688 mΩ
CCV: 2.682 V
After Storage
Weight: 15.3823 g
OCV: 3.249 V
IR: 644 mΩ
CCV: 2.732 V
Weight loss: 0.01%
Leakage: No

E-3

Before Storage
Weight: 15.9173 g
OCV: 3.256 V
IR: 600 mΩ
CCV: 2.354 V
After Storage
Weight: 15.9162 g
OCV: 3.264 V
IR: 600 mΩ
CCV: 2.439 V
Weight loss: 0.01%
Leakage: No

E-4

Before Storage
Weight: 15.6300 g
OCV: 3.254 V
IR: 582 mΩ
CCV: 2.628 V
After Storage
Weight: 15.6293 g
OCV: 3.260 V
IR: 590 mΩ
CCV: 2.618 V
Weight loss: 0.00%
Leakage: No

E-5

Before Storage
Weight: 15.6756 g
OCV: 3.233 V
IR: 612 mΩ
CCV: 2.494 V
After Storage
Weight: 15.6747 g
OCV: 3.252 V
IR: 613 mΩ
CCV: 2.583 V
Weight loss: 0.01%
Leakage: No

Thermal Shock Leakage Resistance Test

Test cycle: 75°C for 6 hours → −40°C for 6 hours, repeated for 10 cycles, followed by 24 hours at room temperature.

VTC CR123A Semi-Sealed


10 Samples · No Leakage

NO.1

Before: 16.0484 g / 3.210 V / 212 mΩ
After: 16.0414 g / 3.240 V / 357 mΩ
Weight loss: 0.04%
Leakage: No

NO.2

Before: 16.0200 g / 3.210 V / 222 mΩ
After: 16.0159 g / 3.240 V / 358 mΩ
Weight loss: 0.03%
Leakage: No

NO.3

Before: 15.6195 g / 3.210 V / 229 mΩ
After: 15.6165 g / 3.230 V / 368 mΩ
Weight loss: 0.02%
Leakage: No

NO.4

Before: 16.0234 g / 3.220 V / 216 mΩ
After: 16.0179 g / 3.250 V / 387 mΩ
Weight loss: 0.03%
Leakage: No

NO.5

Before: 15.7582 g / 3.200 V / 210 mΩ
After: 15.7523 g / 3.240 V / 360 mΩ
Weight loss: 0.04%
Leakage: No

NO.6

Before: 16.1347 g / 3.220 V / 231 mΩ
After: 16.1284 g / 3.240 V / 372 mΩ
Weight loss: 0.04%
Leakage: No

NO.7

Before: 15.7633 g / 3.200 V / 213 mΩ
After: 15.7600 g / 3.230 V / 359 mΩ
Weight loss: 0.02%
Leakage: No

NO.8

Before: 16.0741 g / 3.220 V / 220 mΩ
After: 16.0709 g / 3.240 V / 370 mΩ
Weight loss: 0.02%
Leakage: No

NO.9

Before: 15.7959 g / 3.200 V / 210 mΩ
After: 15.7901 g / 3.240 V / 359 mΩ
Weight loss: 0.04%
Leakage: No

NO.10

Before: 15.9253 g / 3.220 V / 212 mΩ
After: 15.9199 g / 3.260 V / 397 mΩ
Weight loss: 0.03%
Leakage: No
Test Result

No visible electrolyte leakage was found in the tested VTC CR123A samples after the high-temperature storage and thermal shock tests. Recorded weight loss remained between 0.00% and 0.04%.

VTCBATT CR123A Discharge performance test data

No.TemperatureDischarge protocolNo.1No.2No.3No.4maxminave
1Ambient1000mA-cont to 1.5V | mAh1268130113371288133712681299
2Ambient5mA-cont to 2.0V | mAh1714174816761717174816761714
3Ambient10mA-cont to 2.0V | mAh1678165816321682168216321663
4Ambient20mA-cont to 2.0V | mAh1579166516521646166515791636
5Ambient900mA-cont 3s on/27s off pulse EPV: 1.55V | cycles1928197319401986198619281957
6Ambient100Ω-cont to 2.0V | hours58.2258.0557.5258.6858.6857.5258.12
7Ambient1.8A 3s on/7s off pulse to 1.8V | cycles888866910893910866889
8-20°C20mA-cont to 2.0V | mAh1437143413781408143713781414
9-20°C200mA-cont to 2.0V | mAh936933929854936854913
10-20°C900mA-cont 3s on/27s off pulse EPV: 1.55V | cycles1468146814941422149414221463
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