The COMSAN battery standard delineates distinct dimensions for the CR1632 and CR1620 batteries. The "CR" designation signifies lithium manganese round batteries, with the numbers following indicating their respective sizes: the CR1632 measures 16 mm in diameter and 3.2 mm in thickness, while the CR1620 measures 16 mm in diameter but is slightly thinner at 2.0 mm. They are so similar, are they interchangeable? This article will answer your question.
Catalog
Overview of CR1620 Batteries
Overview of CR1632 Batteries
CR1620 vs CR1632: Specifications
CR1620 vs CR1632: Common Characteristics
CR1620 vs CR1632: Equivalents
CR1620 vs CR1632: Applications
CR1620 vs CR1632: Dimensions
CR1620 vs CR1632: Discharge temperature characteristics
CR1620 vs CR1632: Longevity
CR1620 vs. CR1632: Are they Interchangeable?
CR1620 vs CR1632: Conclusion
Overview of CR1620 Batteries
The CR1620 button battery is a small, circular lithium/manganese dioxide coin cell that provides a stable 3V output, making it an ideal power source for a variety of compact electronic devices. Its dimensions, typically 16mm in diameter and 2.0mm in thickness, along with a high energy density and leakage resistance, render it perfect for applications such as watches, calculators, fitness appliances, and medical devices. Despite being non-rechargeable and requiring careful disposal to minimize environmental impact, the CR1620 is favored for its long shelf life, broad operating temperature range, and consistent voltage delivery, ensuring reliability and efficiency in the devices it powers.
Panasonic CR1620 Battery
Overview of CR1632 Batteries
3V button-type lithium manganese dioxide battery is named according to the naming standard of IEC (International Electrotechnical Commission). Among them, C- is a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode. CR- means that the shape of the battery is button-shaped. 16 means that the diameter of the battery is 16.0mm, and 32 means that the thickness of the battery is 3.2mm.
CR1620 vs CR1632: Specifications
| CR1620 | CR1632 |
|---|
| Battery type | Lithium Manganese Dioxide (LiMnO2) | Lithium Manganese Dioxide (LiMnO2) |
| Nominal Voltage | 3V | 3V |
| Nominal Capacity | 75mAh | 140mAh |
| Operating Temperature Range | -30℃ to +85℃ | -30℃ to +60℃ |
| Diameter (mm) | 16mm | 16mm |
| Height (mm) | 2mm | 3.2mm |
| IEC (JIS) | CR1620 | CR1632 |
| Weight | 1.3g | 1.8g |
By comparing the specifications of CR1620 and CR1632, we can know that the diameter of CR1632 and CR1620 batteries are both 16 mm. The CR1620 is 2.0mm thick, while the CR1632 is 3.2mm thick. CR1632 is thicker and therefore provides higher battery capacity for devices that require more power.
Both CR1632 and CR1620 are round, like coins. Both batteries provide a stable output voltage of 3 volts. Both use lithium/manganese dioxide (Li/MnO2) chemical structure, providing stable voltage output and long shelf life.
CR1620 vs CR1632: Common Characteristics
Voltage Stability: Both battery types provide a stable output voltage of 3 volts, suitable for electronic devices that require a long-term stable power supply.
Chemical Composition: They both employ a lithium/manganese dioxide (Li/MnO2) chemical structure, which provides excellent voltage stability and a longer shelf life.
Non-rechargeability: Both CR1620 and CR1632 are single-use batteries and cannot be recharged. This means that once the battery is depleted, it needs to be replaced with a new one.
Environmental Requirements: When disposing of used batteries, responsible recycling or disposal is required to reduce the negative impact on the environment.
CR1620 vs CR1632: Equivalents
CR1620 Equivalents
The ML1620 battery is a rechargeable lithium manganese dioxide battery with a nominal voltage of 3.0 volts that can be used in place of the CR1620 battery. However, it is rarely used due to reasons such as low capacity and strong self-discharge rate.
CR1632 Equivalents
The CR1632 is a 3V battery and logically any similar 3V battery can replace it as the 1632 battery is 16mm in diameter and 3.2mm thick which is equivalent to the Dura battery DL1632 as both batteries have the same physical dimensions and voltage.
CR1620 vs CR1632: Applications
CR1620 batteries are suitable for use in small electronic devices such as watches, calculators, fitness equipment, and some medical equipment due to their thinner design.
Because CR1632 batteries are thicker, they are suitable for devices that require more energy, such as car key remote controls, LED lights, small remote controls, and wearable fitness trackers.
CR1620 vs CR1632: Dimensions
CR1620 and CR1632 batteries are both 16mm. The CR1620 is 2.0mm thick, while the CR1632 is 3.2mm thick. CR1632 is thicker and therefore offers higher energy capacity for devices that require more energy.
CR1620(Left) vs CR1632 Size(Right)
CR1620 vs CR1632: Discharge temperature characteristics
The Discharge temperature characteristics of CR1620 and CR1632 are as follows:
CR1620 Discharge temperature characteristics
CR1632 Discharge temperature characteristics
CR1620 vs CR1632: Longevity
Lifespan is an important factor to consider when choosing a CR battery.
Under the same usage conditions and scenarios, the life of the battery depends entirely on its capacity. Comparing the battery capacity of CR1632 and CR1620, you can find the difference between 140mAh and 75mAh. Therefore, CR1632 is expected to last twice as long as CR1620.
CR1620 vs. CR1632: Are they Interchangeable?
Size and Thickness
CR1620: Has a diameter of 16mm and a thickness of 2.0mm.
CR1632: Has a diameter of 16mm but a thicker profile at 3.2mm.
The similarity in diameter but difference in thickness is crucial when considering whether these batteries can be swapped in a device.
Capacity and Voltage
Both types typically offer the same voltage (3V), which means they operate at the same energy level. However, the capacity, which indicates how much charge a battery holds, can differ significantly:
The CR1632, being thicker, generally holds more capacity compared to the CR1620. The battery capacity of CR1620 is 75mAh, while the battery capacity of CR1632 is 140mAh. This means under the same conditions, a CR1632 would last longer because it can store more energy.
Interchangeability Considerations
The primary concern when swapping these batteries is the thickness. A device designed for a CR1620 might not accommodate the thicker CR1632 without risking damage to the battery compartment or the device itself. Conversely, a CR1632 slot might be too loose for a CR1620, leading to poor contact and unreliable operation.
While both batteries deliver the same voltage, the differing capacities mean that they are suited for different longevity requirements. A device designed for the longevity provided by a CR1632 might perform suboptimally with a CR1620.
CR1620 vs CR1632: Conclusion
By comparing the CR1620 and CR1632 batteries, we can see that the CR1620 and CR1632 button cells share many characteristics, including their diameter, stable voltage output (both are 3V), chemical composition, and their non-rechargeable nature.
However, the thickness of the CR1632 is greater than that of the CR1620, which means that the CR1632 can provide a higher battery capacity for devices. The capacity varies by manufacturer, but typically, the CR1632 is around 140mAh and the CR1620 is around 75mAh.
Frequently Asked Questions
1. Can I replace a CR1620 battery with a CR1632?
Replacing a CR1620 battery with a CR1632 is generally not recommended due to the difference in thickness between the two batteries. The CR1620 has a thickness of 2.0 mm, while the CR1632 is thicker at 3.2 mm. This size difference can lead to fitment issues in devices specifically designed for the thinner CR1620 battery. Using a thicker battery may result in improper contact or could potentially damage the battery compartment or device.
2. Is CR1620 the same as CR2032?
No, the CR1620 and CR2032 batteries are not the same. The CR2032 is significantly thicker and larger in diameter (20 mm in diameter and 3.2 mm in thickness) compared to the CR1620 (16 mm in diameter and 2.0 mm in thickness). These physical differences mean they are not interchangeable, as the CR2032 will not fit in a compartment designed for a CR1620 battery.