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Product Description
The Panasonic CR2032 is a premium, high-reliability manganese-dioxide lithium coin cell battery designed to provide long-lasting, stable 3V power to microelectronics and low-drain devices. Engineered for professional and industrial applications, this non-rechargeable button cell features exceptional pulse discharge stability and an ultra-low self-discharge rate, giving it a shelf life of up to 10 years. It provides precise, ripple-free voltage that protects sensitive circuit components from power drops. For hardware engineers, embedded system developers, and field technicians, it serves as the absolute standard for dependable backup power in harsh environments, maintaining operational integrity across a broad temperature range.
Pinout / Layout Connections
As a standard coin cell battery, the physical package acts as its electrical terminals:
Top Face & Outer Rim (+): The wide, flat polished surface stamped with the “Panasonic CR2032 3V” marking serves as the positive terminal.
Bottom Textured Face (-): The slightly smaller, isolated textured lower surface serves as the negative terminal.
Insulation Ring: A thin plastic circular gasket separates the two terminals along the perimeter to prevent self-shorting within standard button cell holders.
Applications
Computing & Hardware: Motherboard CMOS / BIOS memory retention backups.
Industrial Controls: Real-Time Clock (RTC) modules in PLCs, data loggers, and HMI panels.
Automotive: Remote key fobs, transponders, and keyless entry systems.
IoT & Automation: Wireless sensors, smart home beacons, and ultra-low-power nodes.
Consumer Electronics: Digital scales, pocket calculators, medical glucose meters, and wristwatches.
Technical Specifications
| Parameter | Value / Specification |
| Brand | Panasonic |
| Model | CR2032 |
| Chemistry | Lithium Manganese Dioxide ($\text{Li/MnO}_2$) |
| Nominal Voltage | 3.0 V |
| Nominal Capacity | 225 mAh |
| Standard Continuous Drain | 0.2 mA |
| Diameter | 20.0 mm |
| Height / Thickness | 3.2 mm |
| Weight | ~2.9 g |
| Operating Temperature | -30 °C to +85 °C |
| Rechargeability | Non-Rechargeable (Primary Cell) |
