General
Battery type	Button cell
Chemistry	Lithium
Nominal voltage	3,0 V
Designation	CR2032
Number	1 piece

The Energizer coin cell CR2032 is a lithium battery with a nominal voltage of 3.0 volts, developed for use in smaller electronic devices for household applications. It is particularly suitable for applications such as keyless access systems, E-Book readers, and blood glucose meters, where reliable and long-lasting power supply is required. The battery is available as a single unit and is delivered without additional components or accessories. The use of lithium as the electrolyte material ensures high energy density and long shelf life, making it especially suitable for devices with low power consumption.

Coin cell is the general term for small, round batteries used in many portable and stationary electronic devices. The CR2032 designation describes the exact shape and size: CR stands for lithium coin cell (C for lithium, R for round shape), 20 for a diameter of 20 mm, and 32 for a height of 3.2 mm. These dimensions are internationally standardized and allow use in a wide range of devices specifically designed for this battery size.

Lithium as the chemical basis of the battery offers high energy density and long service life. Compared to alkaline batteries of the same size, the CR2032 delivers higher voltage and is less prone to self-discharge, making it particularly suitable for devices with long periods of inactivity. The battery is designed for use in devices that are operated only occasionally or at low current levels, such as security systems or medical measuring devices.

The operating voltage is 3.0 volts, which is the standard supply voltage for many integrated circuits and microcontrollers in the field of household and medical technology. The battery delivers a constant voltage over most of its service life, which is important for the stable operation of electronic components. The voltage only drops significantly in the final third of its life, enabling early detection of replacement needs.

The battery is designed for use in electronics for household applications, particularly in devices requiring compact and reliable power supply. Examples include electronic key fobs, small sensors, digital scales, or medical measuring devices. Use in such devices requires high reliability and long service life, which the CR2032 provides through its lithium technology.

Compatibility is a central feature of this battery. The CR2032 is standardized worldwide and is used in numerous devices from various manufacturers. The dimensions of 20 mm diameter and 3.2 mm height are universally recognized, so the battery can be used in almost all devices requiring these specifications. Use in devices such as blood glucose meters or E-Book readers is therefore straightforward, provided the devices are designed for this battery size.

Installation and mounting are performed by simply inserting the battery into the designated battery compartment. Polarity is clearly defined by the battery's shape (positive side with protrusion) and markings on the device (positive and negative terminals). No special tools or additional mounting aids are required. The battery is inserted directly into the device, with the positive side (with the protrusion) facing upward, if the device design permits.

In operation, the battery provides high reliability and long service life, especially under low current consumption. Self-discharge is low compared to other battery types, increasing shelf life even during long-term storage. The battery is not rechargeable and must be replaced once depleted. Use in devices operated only occasionally maximizes the battery's service life.