3V Button Battery Cells: CR2032, CR2025 and CR2016 Models with 20mm Diameter

Button batteries provide essential power in compact electronic devices where space is at a premium. These 3V alkaline cells offer reliable energy delivery for applications requiring small-form-factor power sources. With standardised dimensions of 20mm diameter and 3.2mm height, they fit precisely into designated battery compartments in numerous consumer electronics. The three model variations - CR2032, CR2025, and CR2016 - cover different capacity requirements while maintaining the same voltage output and physical footprint.

Features and Construction

The button battery design prioritises space efficiency while delivering consistent electrical performance. These cells maintain their specified voltage output throughout their operational life, making them suitable for devices with stable power requirements.

Material and Build

These batteries utilise alkaline chemistry, which provides a stable 3-volt output suitable for low-drain electronic applications. The construction follows standard button cell design principles with positive and negative terminals positioned on opposite faces of the circular battery. The metallic casing protects the internal components while facilitating electrical contact when installed in compatible devices.

Size and Practical Fit

With a diameter of 20mm and height of 3.2mm, these batteries fit precisely into designated compartments in watches, key fobs, calculators, and similar compact electronics. The standardised dimensions ensure compatibility with devices designed for CR-series button cells. The 3.2mm profile allows installation in slim devices without compromising internal space utilisation.

Uses and Placement

The 3V output makes these batteries suitable for powering electronic circuits requiring stable low-voltage supply. Their compact form factor enables installation in devices where internal space is carefully allocated.

Event or Professional Use

In professional settings, these batteries power timing devices, measurement instruments, and access control systems. Their reliable voltage output supports consistent operation in equipment used for event timing, scientific measurement, or security applications where battery replacement intervals need predictability.

Everyday Home Use

For household applications, these batteries commonly power wristwatches, keyless entry remotes, kitchen scales, and digital thermometers. The 3V output provides sufficient energy for display illumination, wireless signal transmission, and sensor operation in consumer electronics used daily.

Benefits and Buying Value

The standardised specifications of these batteries offer practical advantages in device compatibility and replacement convenience. With multiple model options available, users can select the appropriate capacity for their specific application.

Reuse and Low Maintenance

As disposable power sources, these batteries require minimal maintenance beyond proper storage before use and correct disposal after depletion. Their sealed construction prevents leakage during normal operation when used within recommended parameters. The standardised dimensions ensure replacement batteries will fit existing devices without modification.

Why Choose This Product

These batteries provide reliable 3V power in the compact form factor required by many small electronic devices. With three model options - CR2032, CR2025, and CR2016 - users can select the appropriate specification for their device requirements. The consistent 20mm diameter and 3.2mm height ensure physical compatibility with battery compartments designed for CR-series button cells.