A compartment that holds two or more cell together to from a battery is called a cell holder.

A cell holder is a device used to hold and secure a cell or battery in place. It is an essential component in many electronic devices that require a portable power source. The cell holder provides a stable and secure connection between the cell and the rest of the circuit, ensuring proper functioning of the device.

A cell holder typically consists of a plastic or metal casing with a compartment designed to hold the cell. It may have spring-loaded contacts or metal clips to establish electrical connections with the positive and negative terminals of the cell. These contacts ensure a reliable and low-resistance connection, allowing the flow of electric current between the cell and the device.

The design of a cell holder may vary depending on the size and type of the cell it is intended to hold. Common sizes include AA, AAA, C, D, and button cells. Some cell holders are designed to hold multiple cells in series or parallel configurations to provide the desired voltage and current levels.

Cell holders are used in a wide range of electronic devices, such as flashlights, remote controls, toys, and portable radios. They are also used in more complex devices like laptops and smartphones, where multiple cells are typically used to provide higher voltages and longer battery life.

Overall, a cell holder plays a crucial role in ensuring the proper functioning of electronic devices that rely on portable power sources. It provides a secure and reliable connection between the cell and the circuit, allowing the flow of electric current and powering the device.