4-cell 18650 lithium battery holder pins/wire soldered version

Product Name: 3-cell 18650 Battery Holder (Pin/Through-hole PCB Type)

Appearance and Structural Features:
Overall Structure: Black three-slot battery holder, specifically designed to accommodate three 18650 cylindrical lithium batteries (diameter ~18mm, length 65mm). Features three parallel open frames, with reinforced partitions separating the slots. The bottom has reinforcing ribs and a snap-fit mechanism, making it compact and flat.

Materials and Manufacturing:
Shell: Black engineering plastic (commonly ABS/PC), with good insulation, moderate temperature resistance, and impact resistance.
Contacts: Each slot has a nickel-plated metal spring contact at one end (positive terminal cap style) and a metal spring or clip at the other end (negative terminal). These contacts are highly elastic and provide stable connections, suitable for environments with some vibration.

Functional Design (Key Features):
Pin-out: Metal pins protrude from the bottom/sides (straight pins), allowing direct insertion into PCBs for soldering or into matching sockets. No additional wiring required, making assembly convenient and easy to secure on circuit boards.
Silk Screen Labeling: Model number printed on the bottom ("3S-18650-PLG" style), with series/parallel symbols and positive/negative polarity markings inside the slots for easy identification of internal wiring. Note: Different batches may be configured in series (3S, ~11.1V) or parallel (~3.7V). Always refer to the actual silk screen markings and multimeter measurements.
Mounting Holes: Screw holes/slots reserved on the bottom and sides of the shell for securing with screws or fitting into device enclosures.
Reverse Connection Protection: Raised polarity symbols inside the slots indicate the correct battery installation direction.

Dimension Specifications (Based on Image Markings):
Length: Approximately 78mm
Width: Approximately 60mm
Height: Approximately 21mm

Electrical Characteristics:
Compatible Batteries: Standard 18650 lithium batteries (some may also accommodate shorter batteries like 18500/18490, depending on contact design).
Series Configuration: Nominal voltage ~11.1V, fully charged ~12.6V, capacity equal to single cell capacity.
Parallel Configuration: Nominal voltage ~3.7V, fully charged ~4.2V, total capacity equals sum of three cells.
It is recommended to use a protection board (overcharge/over-discharge/short-circuit protection), especially for series configurations.