1 cell 18650 lithium battery holder SMT surface mount type

Product Name: 1-cell 18650 Lithium Battery Holder (SMT Surface Mount Type)

Appearance and Structural Features:
Overall Structure: This is a single-cell battery holder designed specifically for surface mount technology (SMT), designed to accommodate one 18650 cylindrical lithium battery. It features an open-frame design that significantly reduces weight and saves space while allowing for air circulation for heat dissipation.

Materials and Manufacturing Process:
Shell: The main body is made of black engineering plastic (usually high-temperature resistant nylon), which offers good insulation and mechanical strength, suitable for automated welding processes.
Contacts: Both ends are equipped with brass gold-plated or nickel-plated contacts. One end is a flat spring clip (positive terminal), and the other end is a helical spring or clip structure (negative terminal), ensuring good contact even in vibrating environments. The close-up in the picture shows the contacts being gold-colored, likely due to gold plating, which provides better conductivity and oxidation resistance.

Functional Design (Key Features):
SMT Surface Mount Terminals: Unlike traditional wire connections, this battery holder has flat metal surface mount terminals extending from both sides. These terminals can be directly soldered to the pads on a printed circuit board (PCB), making it suitable for automated mass production using SMT machines.
PCB Layout Compatibility: Detailed dimension markings are provided in the drawings, making it easy for engineers to design the circuit board directly.
Polarity Indication: The plastic housing usually has embossed positive and negative polarity symbols (+/-) to prevent incorrect assembly.
Dimension Specifications (Based on Drawing Markings):
Total Length: Approximately 77.5mm
Width: Approximately 20.7mm
Height: Approximately 15mm (including terminal height)
Terminal Thickness: Approximately 0.95mm
Electrical Characteristics:
Compatible Batteries: Standard 18650 lithium batteries (diameter 18mm, length 65mm).
Voltage: Nominal 3.7V.