4 cell 18650 lithium battery holder SMT surface mount type

Product Name: 4-cell 18650 Battery Holder (SMT Surface Mount Type)

Appearance and Structural Features:
Overall Structure: This is a black four-cell battery holder designed specifically for accommodating four cylindrical lithium-ion batteries of the 18650 size (diameter 18mm, length 65mm). It features a four-row parallel open-frame structure with reinforced partitions between the slots, resulting in a flat rectangular shape ideal for high-density layout on PCBs.

Materials and Manufacturing Process:
Shell: The main body is made of black high-temperature resistant engineering plastic (usually fiberglass-reinforced nylon), which offers excellent insulation and high mechanical strength, suitable for automated processes like reflow soldering.
Contacts: Each slot is equipped with gold-plated/yellow brass metal contacts at both ends. One end is a flat spring clip or metal cap (positive), while the other end is a spring clip/spring structure (negative). These contacts are highly elastic and oxidation-resistant, ensuring reliable contact even in vibrating environments.

Functional Design (Key Features):
SMT/THM Dual-Compatible Terminals: Flat metal surface mount terminals (with positioning holes) extend from both ends of the shell, allowing for surface mount (SMT) or through-hole (THM) soldering, accommodating different production line processes.
Silkscreen Marking: The shell is printed with "FOR Li-ion 18650 CELL" for easy model identification and traceability.
Mounting Holes: Positioning/reinforcement holes are reserved on the middle partition (drawings indicate Φ3 holes spaced 37.6mm apart), which can be used for production positioning or additional fixation.
Polarity Indication: The slots are marked with positive and negative symbols (+/-) to prevent incorrect installation.
Dimension Specifications (Based on Drawings):
Total Length: Approximately 76.2mm
Width: Approximately 81mm
Height: Approximately 15.11mm
Terminal Thickness: Approximately 0.96mm
Positioning Hole Spacing: Approximately 37.6mm
Electrical Characteristics:
Applicable Batteries: Standard 18650 lithium-ion batteries, with a nominal voltage of 3.7V per cell.
Connection Method: Whether in series or parallel depends on the actual internal wiring. It is recommended to confirm the output voltage with a multimeter before installation.