18650 Battery Spring Contact Sheets – Positive & Negative DIY

Keep your DIY electronics and battery-powered projects running smoothly with these 18650 Battery Spring Contact Sheets. Whether you're assembling a custom battery holder, repairing a battery box, or building a new electronics project from scratch, these precision-made nickel-plated spring contacts deliver reliable electrical connectivity every time.

Crafted from 0.3mm nickel-plated iron, these contacts offer excellent conductivity, corrosion resistance, and a firm spring tension that ensures a secure fit inside 18650 battery boxes and holders. Available in positive, negative, and bipolar configurations to suit a wide range of single and multi-cell battery enclosures.

Key Features

• Material: 0.3mm nickel-plated iron for durability and reliable conductivity
• Compatibility: Designed for standard 18650 battery boxes and DIY battery holders
• Configurations: Available as positive, negative, and bipolar (single & double) contact sheets
• Color: Silver finish for a clean, professional look
• Pack: 20 pieces per order — great value for ongoing projects
• Spring design: Firm tension ensures steady electrical contact with the battery terminal
• Easy to install: Drop-in replacement for standard battery box contacts

Perfect For

• DIY battery pack assembly and repair
• Electronics prototyping and hobbyist projects
• Flashlight, torch, and portable device battery box repair
• Robotics, RC vehicles, and custom power supply builds
• Maker spaces and STEM education projects

Why Choose These Battery Contacts?

These spring contact sheets are a must-have addition to any maker's toolkit. The nickel-plated finish prevents oxidation and maintains a low-resistance connection over time, while the springy design accommodates minor size variations between 18650 cells. Stock up and always have reliable contacts on hand for your next build.

For more information on safe DIY electronics practices and battery handling, visit the U.S. Consumer Product Safety Commission – Battery Safety Resource.

Frequently Asked Questions

Q: What are 18650 battery spring contact sheets used for?

A: These spring contact sheets are used in DIY battery holders, custom battery packs, flashlight repairs, and electronics projects that use 18650 lithium-ion cells. They provide a secure, low-resistance electrical connection between the battery terminal and the battery box.

Q: What material are these battery spring contacts made from?

A: These contacts are made from 0.3mm nickel-plated iron. The nickel plating provides corrosion resistance and excellent electrical conductivity, making them reliable for long-term use in battery holders and DIY electronics enclosures.

Q: What configurations are available — positive, negative, or both?

A: These contacts are available in positive, negative, and bipolar (single and double) configurations, so you can select exactly what your battery box or DIY project requires for a complete circuit connection.

Q: How many pieces are included in a pack?

A: Each order includes 20 pieces, giving you plenty of contacts to complete multiple projects or keep as spares for future repairs and builds.