21700 Battery Holder 1-4S 3-35A DIY PCB Nickel-Plated

21700 Battery Holder – Secure, Reliable PCB Mounting for DIY Power Projects

The HUXUAN 21700 Pin-Type Battery Holder is an essential component for electronics enthusiasts, hobbyists, and engineers working on DIY power banks, PCB circuit assemblies, and portable energy storage devices. Designed with a robust pin-type structure for direct PCB soldering, this holder delivers stable, dependable contact every time — supporting 1S to 4S configurations and current ratings from 3A to 35A (Standard and Enhanced variants available).

Made in Mainland China.

Key Features

• Pin-Type PCB Welding Design: Pins solder directly to your PCB for a firm, vibration-resistant connection that virtually eliminates the power loss caused by loose battery contacts.
• Universal 21700 Compatibility: Fits any brand of 21700 lithium cells — no proprietary sizing restrictions, giving you maximum flexibility in component selection.
• Wide Current Range (3–35A): Available in Standard and Enhanced ratings, so you can match the holder to your project's exact power demands.
• High-Quality Nickel-Plated Contacts: Nickel plating resists corrosion and oxidation, prolonging contact life and maintaining low resistance over time.
• Durable Plastic Housing: The black plastic body offers excellent insulation, short-circuit protection, and wear resistance — keeping your batteries and circuitry safe.
• Supports 1S–4S Configurations: Whether you need a single-cell setup or a 4-series arrangement for higher voltage, this holder has you covered.

Specifications

Applications

• DIY power banks and portable chargers
• PCB circuit assembly and prototyping
• Energy storage and backup power systems
• Portable electronic equipment
• Lithium battery power supply systems

Notes

• Product images are for illustration purposes; please refer to the written specifications for exact dimensions.
• Minor dimensional variations may occur due to manual measurement tolerances.
• Screen color calibration may cause slight differences between displayed and actual product color.

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery size is this 21700 battery holder compatible with?

A: This holder is specifically designed for 21700 lithium cells. It is compatible with 21700-size batteries from any brand, giving you the flexibility to use the cells of your choice without compatibility concerns.

Q: What does 1-4S mean for this battery holder?

A: "1-4S" refers to the series configuration of cells the holder supports. You can mount 1, 2, 3, or 4 cells in series, allowing you to build power supplies at different voltages to suit your specific DIY project or PCB assembly requirements.

Q: What is the difference between the Standard and Enhanced versions?

A: The Standard version is rated for lower current applications (typically around 3–15A), while the Enhanced version supports higher current loads up to 35A. Choose the Enhanced variant for projects demanding greater power throughput, such as high-drain portable electronics or energy storage systems.

Q: Does this battery holder include batteries or a PCB?

A: No — this listing is for the battery holder only. Batteries, PCBs, and chargers are not included and must be sourced separately.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.