CR1220 Lithium Coin Battery: Datasheet, Equivalent and CR1220 vs BR1220
BATTERY LITHIUM 3V COIN 12.5MM
CR1220 battery is a very popular non-rechargeable lithium 3.0V button/coin cell battery. In today's article, we'll have a detailed introduction to the CR1220 lithium battery, after reading this article, you will learn what is CR1220, what's its features, and what's the difference between BR1220, CR1216, and CR1225.

How to Replace Casio G-Shock 5146 Battery 3V CR1220 Lithium Battery Japan - Simple Steps
CR1220 Description
CR1220 is a button cell, also known as lithium coin battery, that is mainly used in high power devices such as keyless entry devices, glucose monitors, heart-rate monitors, and toys & games.
It comes in a cylindrical shape and can retain power for a maximum period of time. If it is spared alone for one year, it will discharge only 1% of the total battery capacity.
This battery is slightly different from CR2032 in terms of battery capacity, weight, and lithium content as the former comes with 35mAh capacity with 0.8g weight and 0.006 grams lithium content while the latter contains 285mAh capacity, 3gram weight, and 0.109gram lithium content.
It features a small and compact shape, making it an ideal choice for hard-to-reach places.
Prior precautions are required to keep this device safe and away from the kids. If swallowed, this device can cause severe health damage or death in some cases due to the chemical composition it incorporates.
CR1220 CAD Models
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CR1220: Features
Lightweight, High Voltage, and High Energy Density
Excellent Discharge Characteristics
Excellent Leakage Resistance
Excellent Long-Term Reliability
UL Approved Parts
CR1220: Dimensions

Specifications
- TypeParameter
- Factory Lead Time22 Weeks
- Material
In electronic components, the parameter "Material" refers to the substance or material used in the construction of the component. The choice of material is crucial as it directly impacts the component's performance, durability, and other characteristics. Different materials have varying properties such as conductivity, resistance to heat, corrosion resistance, and mechanical strength, which determine how the component functions in a circuit. Common materials used in electronic components include metals like copper and aluminum, semiconductors like silicon, insulators like ceramics and plastics, and various alloys. Selecting the appropriate material is essential for designing reliable and efficient electronic components.
Lithium - Weight1.2g
- Voltage Rated
RATED voltage is the voltage on the nameplate - the "design point" for maximum power throughput and safe thermal operation.
3V - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
CR1220 - Published2008
- Size / Dimension
In electronic components, the parameter "Size / Dimension" refers to the physical dimensions of the component, such as its length, width, and height. These dimensions are crucial for determining how the component will fit into a circuit or system, as well as for ensuring compatibility with other components and the overall design requirements. The size of a component can also impact its performance characteristics, thermal properties, and overall functionality within a given application. Engineers and designers must carefully consider the size and dimensions of electronic components to ensure proper integration and functionality within their designs.
0.49Dia x 0.08 H 12.5mmx2.0mm - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Max Operating Temperature
The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
60°C - Min Operating Temperature
The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.
-30°C - Voltage - Rated DC
Voltage - Rated DC is a parameter that specifies the maximum direct current (DC) voltage that an electronic component can safely handle without being damaged. This rating is crucial for ensuring the proper functioning and longevity of the component in a circuit. Exceeding the rated DC voltage can lead to overheating, breakdown, or even permanent damage to the component. It is important to carefully consider this parameter when designing or selecting components for a circuit to prevent any potential issues related to voltage overload.
3V - Termination Style
"Termination style" in electronic components refers to the method used to connect the component to a circuit board or other electronic devices. It determines how the component's leads or terminals are designed for soldering or mounting onto the circuit board. Common termination styles include through-hole, surface mount, and wire lead terminations.Through-hole components have leads that are inserted through holes in the circuit board and soldered on the other side. Surface mount components have flat terminals that are soldered directly onto the surface of the circuit board. Wire lead terminations involve attaching wires to the component for connection.The choice of termination style depends on factors such as the type of component, the manufacturing process, and the space available on the circuit board. Different termination styles offer various advantages in terms of ease of assembly, reliability, and space efficiency in electronic designs.
Requires Holder - Output Voltage
Output voltage is a crucial parameter in electronic components that refers to the voltage level produced by the component as a result of its operation. It represents the electrical potential difference between the output terminal of the component and a reference point, typically ground. The output voltage is a key factor in determining the performance and functionality of the component, as it dictates the level of voltage that will be delivered to the connected circuit or load. It is often specified in datasheets and technical specifications to ensure compatibility and proper functioning within a given system.
3V - Battery Chemistry
A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells.
Lithium Manganese Dioxide - Battery Cell Size
The most common lithium-ion cell is the 18650 (the numbers define the physical dimensions and shape as follows: 18mm in diameter, 65mm long and the 0 means it has a round cross-section) which is due to its widespread use in laptop battery packs.
Coin 12.5mm - Capacity
In electronic components, "Capacity" typically refers to the maximum amount of electrical charge that a component can store. It is measured in units called farads (F). Capacitors are the most common components that have a capacity rating. The capacity of a capacitor determines how much energy it can store and release when connected in a circuit. Higher capacity capacitors can store more charge and are often used in applications requiring larger energy storage or filtering capabilities. It is important to select a capacitor with the appropriate capacity to ensure proper functioning of the circuit.
35mAh - Discharge Rate
The "Discharge Rate" in electronic components refers to the rate at which a component can release stored energy or power. This parameter is particularly important in devices that use batteries or capacitors, as it determines how quickly these components can discharge their stored energy. A high discharge rate means that the component can release energy quickly, while a low discharge rate indicates a slower release of energy. Understanding the discharge rate of electronic components is crucial for designing circuits and systems that require specific power delivery characteristics.
100μA - Chemistry/Technology
The parameter "Chemistry/Technology" in electronic components refers to the specific materials and manufacturing processes used to create the component. It encompasses the chemical properties of materials such as semiconductors, dielectrics, and conductors, which influence performance characteristics like conductivity, thermal stability, and reliability. This parameter is critical for determining the suitability of components for various applications, including considerations like environmental impact, degradation over time, and compatibility with other materials. Understanding the chemistry and technology behind electronic components is essential for advancing performance and innovation in the field.
Lithium - Height2.032mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
CR1220: Applications
CR1220 comes with a wide range of applications requiring on-the-fly temporary power. Here are some major applications of this coin cell:
Keyless entry devices
Glucose monitors
Implantable cardiac defibrillators
Heart-rate monitors
Artificial cardiac pacemakers
Toys & games
keychain LED flashlights
thermometers
key-less remotes
medical scales
PDAs
cameras
CR1220: Manufacturer
Panasonic Industrial Devices Sales Company of America is the industrial components and electronic devices division of Panasonic Corporation of North America. Panasonic Industrial Devices Sales Company of America provides key components that power the home appliances, consumer electronics, computers, communications, and commercial and healthcare products used by millions of people each day. Our wide offering of high-quality industrial products, global manufacturing, and advanced research and development facilities as well as our commitment to customer service make us a preferred vendor to the world's most famous original equipment manufacturers of high-tech electronic products. From the smallest resistor to the highest technology wireless communications modules, Panasonic offers it all! Choosing Panasonic means more than selecting a name you know and trust. It means choosing the best quality components the industry can offer.
CR1220 vs BR1220
CR1220 batteries are much more common than BR1220 batteries - they share the same physical dimensions, but they differ in chemistry and thus have different characteristics in terms of battery capacity, voltage, operating temperature, self-discharge rate, etc.
Manganese-dioxide lithium battery labels start with 'C' and generally their operating temperature range is between -20°C (-4°F) and 70°C (158°F). The nominal voltage is 3.0V, and the cutoff voltage is 2.0V.
A typical example is a CR1220 battery, with a typical capacity of ~35-40 mAh, a standard discharge current of ~0.05 - 0.1 mA, and a maximum continuous discharge current of 1mA.
Carbon-monofluoride lithium battery labels start with 'B', hence the label BR1220. The operating temperature of BR1220 batteries is usually in the -30°C (-22°F) and 85°C (185°F) range. The nominal voltage is 3.0V, with a cutoff voltage of 2.0 V - very similar to the CR1220 battery. However, 'older' BR1220 batteries have a nominal voltage of 2.8 volts and a cutoff voltage of ~2.25 volts - regardless of the exact battery chemistry, BR1220 batteries have a more stable output voltage when compared with CR1220 batteries.
The typical capacity of the BR1220 battery is ~35 mAh. But, the standard discharge current is lower than the standard discharge current of CR1220 batteries and is ~0.03, with the maximum allowed continuous discharge current of 0.1 (if allowed!).
But, BR1220 batteries feature a typical annual discharge rate of <1% (even less than that), thus having a shelf life of 10+ years, which may be very important for devices requiring reliable memory backup batteries.
CR1216 Batteries vs CR1220 Batteries vs CR1225 Batteries
CR1216, CR1220, and CR1225 batteries are very similar batteries, with the main difference being in size and thus their features and performances:
- BR1216/CR1216 batteries feature physical dimensions of 12.5 x 1.6 mm, the smallest capacity (~25 mAh), and the drain currents very similar to the BR1220/CR1220 batteries.
- BR1220/CR1220 batteries feature physical dimensions of 12.5 x 2.0 mm, smaller capacity (35-40 mAh), and somewhat lower drain currents than the BR1225/CR1225 batteries.
- BR1225/CR1225 batteries feature physical dimensions of 12.5 x 2.5, larger capacity (~50 mAh), and somewhat stronger discharge currents than the BR1220/CR1220 batteries.
Trend Analysis
Datasheet PDF
- MSDS Material Safety Datasheet :
- Datasheets :
Parts with Similar Specs
What’s the weight of CR1220?
0.8g
How many lithium content does cr1220 contain?
0.006g
What’s cr1220 operating temperature?
-30-70°C
Is cr1220 a rechargeable battery?
No, cr1220 is a non-rechargeable battery.
What shape does CR1220 come in?
Cylindrical
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