3 AA batteries, embedded round battery compartment with lid and switch, white version

Product Name: 3 AA (Size 5) Round Battery Holder (White, with Cover and Switch)

Appearance and Structural Features:
Overall Design: This is a white round battery holder designed specifically for holding three AA (Size 5) batteries. It consists of a round mounting flange and a square battery compartment, with the compartment embedded in a circular base. Once installed, it looks sleek and flush with the device panel.

Materials and Manufacturing:
Shell: Made of white engineering plastic (usually ABS or PP), with a matte finish for a clean look, suitable for pairing with devices with white or light-colored exteriors.
Contacts and Hardware: Features high-elasticity nickel-plated coil springs (negative terminal) and metal tabs (positive terminal) inside. Metal fixing/contact tabs are visible at the four corners of the compartment to secure the battery holder and ensure proper conductivity.

Functional Design (Key Features):
Integrated Switch: A sliding slot is provided on the edge of the circular flange, housing a small black toggle switch marked with "ON / OFF" on both sides, allowing direct control of power on/off from the battery holder itself.
Snap-on Protective Cover: A square protective cover is attached to the top of the compartment, featuring a snap-on/hang-down mechanism. The cover is stamped with a CE mark, recycling symbol, and "MADE IN CHINA" for protection against battery dislodgment due to vibration and dust prevention.
Embedded Installation: The circular flange is designed to fit easily into pre-drilled holes in devices, leaving only the switch and cover visible after installation for a clean and concealed look.

Dimension Specifications (Based on Image Markings):
Outer Diameter: Approximately 85mm
Total Height (h): Approximately 17.8mm
Electrical Characteristics: Internally designed as a series circuit, three AA batteries provide a DC output voltage of 4.5V.