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18650 Battery Holder Box — Bronze Contact Pins, Single / Series Configuration, DIY Battery Pack

18650 Battery Holder Box Bronze Contact Pins, Single / Series Configuration, DIY Battery Pack

$4.40 USD

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18650 Battery Holder Box — Bronze Contact Pins, Single / Series Configuration

This 18650 battery holder features high-conductivity bronze contact pins for reliable electrical connection and secure battery retention. Available in single-cell and multi-cell series configurations, it is the essential component for building DIY Li-ion battery packs, portable Arduino power supplies, and power bank projects using standard 18650 cells.

Key Specifications

Parameter	Value
Compatible Cell	18650 Li-ion (65mm length)
Contact Material	Bronze (high conductivity)
Configuration	Single cell or series (variant dependent)
Output	Wire lead (red = +, black = −)
Cell Retention	Spring-loaded contact pins

Configuration Guide

1S (single cell) — 3.7V nominal, for 3.3V/5V boost converter projects
2S (2 cells in series) — 7.4V nominal, for 5V–8V applications
3S (3 cells in series) — 11.1V nominal, for 12V Arduino / motor driver projects
4S (4 cells in series) — 14.8V nominal, for power tool battery packs

Why Choose This 18650 Holder?

✅ Bronze contact pins — lower contact resistance than steel springs
✅ Spring-loaded retention — secure fit for standard 65mm 18650 cells
✅ Wire lead output — easy to connect to BMS, boost converter, or load
✅ Series configuration available — build multi-cell packs without spot welding
✅ Compact enclosure — protects cells and prevents short circuits