Back cover or battery cover flex by Samsung Galaxy Watch 7 L300 L305 40mm premium quality

Back Cover Flex Cable for Samsung Galaxy Watch 7 40mm L300 L305 – Premium Quality

This back cover flex cable (also referred to as battery cover flex) is specifically designed for the Samsung Galaxy Watch 7 40mm, compatible with models SM-L300 and SM-L305. It enables proper communication between the back housing (which contains key sensors) and the main logic board.

Key features:

• Internal flex connector linking the back cover to the mainboard.

• Supports vital sensors (heart rate, oxygen, ECG, etc.).

• Premium-grade construction with reinforced circuits and precise contacts.

• Fully compatible with 40mm Bluetooth (L300) and LTE (L305) versions.

• Tailored length and shape to ensure safe and precise installation.

Repair advantages:

This component is essential for restoring full sensor connectivity after a repair involving the rear housing. Commonly damaged during disassembly, replacing this flex ensures the proper function of health tracking features and prevents connection loss or sensor errors.

Installation tips:

• Always use ESD-safe tools and magnification during handling.

• Disconnect the battery before installation.

• Ensure the connector is properly aligned with the socket.

• Avoid overbending or stressing the flex cable.

• Test all sensors after assembly (heart rate, ECG, etc.).

Technical Table