Last updated: June 3 2026 | For consumers, engineers, OEM buyers and procurement teams choosing CR2032 lithium coin cell batteries.
Quick Answer
A CR2032 battery is a non-rechargeable 3V lithium manganese dioxide coin cell battery. The name “2032” means it is about 20mm in diameter and 3.2mm thick. It is widely used in car key fobs, remote controls, medical devices, watches, calculators, security sensors, computer motherboards and small electronic devices.
CR2032 is popular because it is compact, has stable voltage, long shelf life and good performance in low-drain applications. However, it should not be recharged, soldered directly, short-circuited or used as a replacement for other coin cells unless the size and device specification match.
Best practice: Always follow the battery model specified by the device manufacturer. CR2032, CR2025 and CR2016 share the same 20mm diameter, but they have different thickness and capacity, so they are not always interchangeable.
What Is a CR2032 Battery?
A CR2032 is a lithium coin cell battery designed for compact electronics that need stable 3V power. It belongs to the CR series of lithium manganese dioxide primary batteries. “CR” indicates lithium manganese dioxide chemistry, while “2032” indicates the physical size.
Because CR2032 batteries are small, lightweight and have low self-discharge, they are especially useful for devices that spend most of their time in standby mode but need reliable power when activated.
CR2032 Battery Specifications
Specification
Typical CR2032 Value
Why It Matters
Battery type
Non-rechargeable lithium coin cell
It must be replaced after discharge and should not be charged.
Nominal voltage
3V
Suitable for low-power electronics designed for 3V coin cells.
Typical capacity
About 210–240mAh depending on model and discharge conditions
Capacity affects runtime in low-drain devices.
Dimensions
About 20mm diameter × 3.2mm thickness
Physical size determines whether it fits the battery holder.
Chemistry
Lithium manganese dioxide
Provides stable voltage and long shelf life for primary battery applications.
Common formats
Standard cell, tabbed cell, leaded cell, horizontal or vertical PCB mount versions
OEM devices may require welded tabs or leads instead of a loose coin cell.
How Does a CR2032 Battery Work?
A CR2032 battery converts chemical energy into electrical energy through a primary lithium electrochemical reaction. When the battery is connected to a device, electrons flow through the external circuit while ions move inside the cell. This process is designed for one-time discharge, not repeated charging.
Important: CR2032 is not a rechargeable battery. If you need a rechargeable coin cell, look for a compatible LIR2032 or ML2032 type only if your device supports that voltage and charging system.
Advantages and Limitations of CR2032 Batteries
Factor
Advantage
Limitation
Size
Small and lightweight for compact electronics.
Limited capacity compared with larger batteries.
Voltage
Stable 3V output for low-power circuits.
Not suitable for devices requiring higher current or rechargeable power.
Shelf life
Long storage life when stored correctly.
Performance still depends on storage temperature, humidity and expiration date.
Cost
Affordable for many small devices and bulk use.
Not cost-effective for devices that drain batteries frequently.
OEM design
Available with tabs, leads and PCB-mount options.
Direct soldering to standard loose cells is not recommended.
Common Applications of CR2032 Batteries
CR2032 batteries are best for compact, low-drain devices that need reliable standby power. They are not designed for high-current motors, LED strips or devices that require frequent recharging.
Application
Why CR2032 Is Used
Selection Note
Car key fobs
Compact size and reliable pulse power for remote locking signals.
Always check the original battery model before replacing.
Medical devices
Stable voltage for thermometers, glucose meters and small diagnostic devices.
Use verified batteries and follow device instructions.
Security sensors
Low self-discharge helps support long standby time.
Check service life and temperature requirements.
Computer motherboards
Maintains CMOS memory and real-time clock power.
Replace carefully with correct polarity.
Watches, calculators and remotes
Small size and long service life for low-drain devices.
Confirm thickness because some devices use CR2025 or CR2016 instead.
IoT and smart devices
Compact 3V supply for small wireless or standby circuits.
Evaluate pulse current, temperature and expected battery life.
CR2032 vs CR2025 vs CR2016
CR2032, CR2025 and CR2016 all have a 20mm diameter and 3V nominal voltage, but their thickness and capacity are different. They are not always interchangeable.
Battery Model
Size
Typical Capacity
Best Use
CR2016
20mm × 1.6mm
Lower capacity
Very thin devices and compact remotes.
CR2025
20mm × 2.5mm
Medium capacity
Slim devices needing more capacity than CR2016.
CR2032
20mm × 3.2mm
Highest of these three
Devices needing longer runtime and enough compartment depth.
Can CR2032 Replace Other Coin Cells?
CR2032 can only replace another coin cell when the voltage, diameter, thickness, contact pressure and device specification are compatible. Even when two coin cells are both 3V, thickness differences can affect fit and electrical contact.
Replacement Question
Recommended Answer
Reason
Can CR2032 replace CR2025?
Only if the compartment accepts 3.2mm thickness.
CR2032 is thicker than CR2025 and may damage a tight holder.
Can CR2032 replace CR2016?
Usually not recommended.
CR2032 is much thicker than CR2016.
Can CR2025 replace CR2032?
Emergency use only in some devices.
CR2025 is thinner and lower capacity, so contact and runtime may be poor.
Can LIR2032 replace CR2032?
Only if the device supports rechargeable LIR2032.
LIR2032 is rechargeable but has a different voltage profile and charging requirement.
CR2032 With Tabs, Leads and PCB Mounting
For OEM projects, a standard loose CR2032 cell is not always the right choice. Many circuit boards, memory backup modules, meters and industrial devices require CR2032 batteries with tabs, pins, wires or connectors.
Do not solder directly to a standard CR2032 cell. Heat can damage the battery seal and internal structure. Use factory-welded tabs, leads or approved battery holders for PCB mounting.
CR2032 Format
Best For
OEM Note
Standard loose cell
Consumer replacement and battery holders.
Simple and widely available.
CR2032 with solder tabs
PCB mounting and memory backup circuits.
Tabs should be factory welded, not hand soldered directly to the cell.
CR2032 with leads or connector
Meters, IoT devices, industrial electronics and customized assemblies.
Cable length, polarity and connector type should match device design.
Vertical or horizontal PCB mount
Space-limited circuit boards.
Choose orientation based on enclosure height and board layout.
How Long Does a CR2032 Battery Last?
CR2032 battery life depends on device current, temperature, usage frequency, storage condition and battery quality. In very low-drain devices, it may last several years. In devices with frequent wireless transmission, LEDs or higher pulse current, runtime can be much shorter.
Device Type
Typical Runtime Pattern
Main Factor
Car key fob
Often months to years depending on use.
Transmission frequency and standby current.
Motherboard CMOS
Usually long service life.
Very low current draw.
Medical thermometer or meter
Depends on usage frequency.
Display, sensor and measurement cycles.
Bluetooth tracker or smart sensor
Can be shorter due to wireless activity.
Pulse current, transmission interval and temperature.
How to Choose the Right CR2032 Battery
Selection Factor
What to Check
Device compatibility
Confirm the device label or manual specifies CR2032.
Capacity and runtime
Choose reliable cells for long service life and stable voltage.
Storage life
Check production date, expiration date and storage conditions.
Application environment
Consider temperature, humidity and device current demand.
OEM mounting
Confirm whether the device needs loose cells, tabs, leads or connectors.
Bulk purchasing
Confirm packaging, MOQ, documentation, shelf life and long-term supply stability.
Safety Tips for CR2032 Batteries
- Do not recharge CR2032 batteries.
- Do not short-circuit the positive and negative terminals.
- Do not solder directly onto a standard loose CR2032 cell.
- Do not puncture, crush, heat, open or throw the battery into fire.
- Install the battery with correct polarity.
- Do not mix old and new batteries in the same device.
- Keep coin cell batteries away from children and pets.
- Recycle used batteries according to local regulations.
Coin cell ingestion warning: CR2032 batteries are small and can be dangerous if swallowed. Store unused and used batteries safely away from children and pets.
Why Choose PKCELL CR2032 Batteries?
Need CR2032 Batteries for Bulk or OEM Projects?
PKCELL supplies CR2032 lithium coin cell batteries for consumer electronics, medical devices, smart sensors, security devices, meters, remote controls, key fobs and industrial electronics. For OEM projects, PKCELL can support standard CR2032 cells, CR2032 with tabs, CR2032 with leads, customized connectors, packaging options and export documentation.
Best fit: bulk CR2032 orders, OEM coin cell battery projects, lithium button batteries with tabs, memory backup batteries and industrial device battery sourcing.
Request a CR2032 Battery Quote
FAQ
What is a CR2032 battery used for?
CR2032 batteries are used in car key fobs, remote controls, watches, calculators, medical devices, computer motherboards, security sensors, smart devices and small electronic products requiring compact 3V power.
Is a CR2032 battery rechargeable?
No. A standard CR2032 battery is a non-rechargeable lithium manganese dioxide coin cell. Do not charge it. If you need a rechargeable coin cell, check whether your device supports LIR2032 or another rechargeable type.
What voltage is a CR2032 battery?
A CR2032 battery has a nominal voltage of 3V. This is why it is widely used in low-power electronics designed for 3V coin cell batteries.
Can CR2032 replace CR2025?
Only if the device battery compartment can fit the thicker CR2032. Both are 3V and 20mm in diameter, but CR2032 is 3.2mm thick while CR2025 is 2.5mm thick.
How long does a CR2032 battery last?
Battery life depends on the device current draw, usage frequency, temperature and battery quality. In low-drain devices, CR2032 may last for years, while wireless trackers or devices with frequent activity may drain faster.
Can I solder wires directly to a CR2032 battery?
No. Direct soldering can overheat and damage the cell. For PCB mounting or wire connection, use CR2032 batteries with factory-welded tabs, leads or connectors.
Can PKCELL supply CR2032 batteries with tabs or leads?
Yes. PKCELL can supply standard CR2032 batteries, CR2032 with tabs, CR2032 with leads, PCB mounting versions and customized connector options for OEM applications.
Conclusion
CR2032 is one of the most widely used 3V lithium coin cell batteries because it combines compact size, stable voltage, useful capacity and long shelf life. It is ideal for low-drain electronics such as key fobs, meters, medical devices, motherboards, remotes and security sensors.
For consumers, the safest choice is to use the exact battery model specified by the device. For OEM buyers, the best CR2032 solution depends on capacity, temperature range, mounting method, tab or lead design, packaging, documentation and long-term supply stability.
