By Lithium Cell 827
Equivalent Replacement Products
CR1220 is a 3V lithium manganese button battery. Its compact size (12mm diameter, 2.0mm thickness) and lightweight design (~0.6g) make it an ideal power source for small electronic devices. Compared to alkaline batteries, its energy density is 50% higher. It operates within a wide temperature range (-30°C to +60°C), making it suitable for miniaturized, low-power applications.
Using a lithium-manganese dioxide (Li-MnO2) chemical system, CR1220 has 20% more capacity than CR1216 (1.6mm thickness) while avoiding compatibility issues associated with CR1225 (2.5mm thickness). Its sealed structure withstands 10kgf/cm² pressure, preventing electrolyte leakage due to compression.
Major brands include Panasonic, Energizer, and Maxell, all certified under UL/IEC safety standards. For example, Panasonic's CR1220 uses dual insulation isolation technology, reducing short-circuit risk to below 0.01%.
CR1220 has a nominal voltage of 3V and a typical capacity of 35-40mAh (constant discharge at 0.1mA). As shown in Figure 1, when the load current increases to 1mA, the capacity degradation rate is only 5%, superior to the 12% degradation observed in same-size alkaline batteries.
At -20°C, CR1220 retains 85% of its nominal capacity, while standard zinc-silver batteries retain only 40%. Under extreme high temperatures (60°C), its annual self-discharge rate rises to only 1.5%, significantly lower than the 30% degradation seen in nickel-metal hydride (NiMH) batteries.
With an annual self-discharge rate below 1%, CR1220 offers up to 10 years of storage life. Compared to the rechargeable ML1220, CR1220 does not require maintenance charging, making it ideal for backup power applications, such as motherboard CMOS circuits that retain data for over three years.
| Parameter | Value/Description | Competitive Advantage |
| Nominal Voltage | 3V | More stable than ML1220 |
| Capacity | 35-40mAh | 25% higher than CR1216 |
| Weight | ~0.6g | 50% lighter than CR2032 |
During pulse load testing, CR1220 exhibits voltage fluctuations <0.1V at 0.5mA intermittent discharge, whereas CR1216 fluctuates up to 0.3V. This makes CR1220 more suitable for applications requiring instant high current, such as smart locks.
Compliant with IEC 60086-3 standards, CR1220 is fully compatible with ANSI 5012LC. Compared to non-standard products, its diameter tolerance is controlled within ±0.2mm, increasing device compatibility to 99.8%.
As a CMOS battery for motherboards, CR1220 can retain BIOS data for over 10 years (typical power consumption: 0.1μA). Compared to CR2032, it reduces PCB space usage by 60%, aiding miniaturized hardware design.
In disposable temperature patches, CR1220 operates continuously for 30 days (sampling interval: 5 minutes) and meets ISO 13485 medical device certification. In industrial sensors, its vibration resistance is three times higher than pouch batteries.
Classified as Class 9 hazardous waste, CR1220 should be recycled by professional organizations such as Call2Recycle, achieving 95% material recovery. Improper landfill disposal can lead to lithium contamination exceeding safety limits by 150 times.
ML1220 supports 500 charge cycles, but its full-charge voltage of 3.2V may overload precision circuits. It is mainly suitable for testing devices requiring frequent battery replacement.
Multiple alternatives exist for replacing CR1220 batteries, including rechargeable options such as the LIR1220 and FDKML1220 3V button cells, along with other comparable battery models sharing similar specifications.
The CR1220 battery has several interchangeable equivalents suitable for various devices, such as the rechargeable LIR1220, along with DL1220, DL1220B, BR1220, BR1220-1W, CR1220-1W, ECR1220, 280-208, KCR1220, LM1220, 5012LC, SB-T13, and L04 models. These alternatives are functionally compatible and can serve as replacements depending on device requirements.
The shelf life of a CR1220 battery typically spans around 12 months when stored under normal conditions. Its functional longevity, nevertheless, is influenced by multiple variables such as production standards, material quality, and specific operating conditions during deployment.
The CR1220, a coin-shaped battery, serves as a compact power source for devices such as timepieces, remote entry systems, glucose meters, and portable electronic entertainment products like toys and gaming devices.