A battery holder or a battery mount is an integrated or separate cavity to hold cells. If it is a separate compartment, it can be attached to a cell-powered device. It is used to hold the cells securely and power the device it is attached to. The primary function of a battery holder is to facilitate the power supply to the device it is attached to. External connections can be made to the cells in the battery holder through lugs soldered to the cell-powered device, wire leads, snap terminals, or it can be mounted on PCBs via pins.
1 x 3 x AA Plastic Case Battery Holder with On/Off Switch Black