3AA Embedded Round Battery Holder with Cover and Switch, Black

Product Name: 3 AA (5) Battery Holder with Cover and Switch

Appearance and Structural Features:
Overall Design: This is a uniquely designed black circular battery holder, specifically designed to hold three AA (5) batteries. It features a compact triangular arrangement that creates a perfect circular shape, making it ideal for embedded installation or as the bottom cover of circular devices.

Materials and Manufacturing: The outer shell is made of high-quality engineering plastic (usually ABS), with a matte black finish that is durable and sturdy. The edges have wide circular mounting flanges, with a countersunk screw hole on each side for easy and secure attachment to a device panel or casing.

Functional Features (Key Points):
Integrated Toggle Switch: A small toggle switch is integrated on one side of the battery holder, clearly labeled with "ON" and "OFF" positions. Users can directly control the power on and off from the battery holder itself.
Snap-on Protective Cover: The top of the battery compartment is equipped with a removable square cover that is secured with a snap on the top. The cover is printed with "MADE IN CHINA." When closed, it secures the batteries, preventing them from falling out due to vibration and also provides dust protection.
Mounting Holes: The screw holes on both sides are perfectly designed to fit into the pre-cut slots in a device casing, ensuring that the surface of the battery holder is flush with the device's surface.

Contact System:
Negative Terminal: An internally mounted high-elasticity nickel-plated spiral spring ensures tight and flexible battery contact.
Positive Terminal: The other end features a metal spring contact.

Dimension Specifications (Based on Image Labels):
Outer Diameter: 82.8mm
Internal Battery Compartment Width: 56.9mm
Internal Battery Compartment Height: 47.8mm
Total Height: 19mm

Electrical Characteristics: The internal circuit is designed as a series connection, and three AA batteries can provide a DC output voltage of 4.5V.