18650 DIY Metal Power Bank Case USB-C 5V 1A Overcharge Protection

Build Your Own Power Bank with This DIY 18650 Metal Charger Case

The 18650 DIY Metal Power Bank Case is a sleek, compact charger housing that lets you build a custom portable charging solution using a standard 18650 lithium battery. Featuring a USB-C input port, 5V 1A charging output, and built-in overcharge protection circuitry (SMD), this rugged metal enclosure is perfect for makers, hobbyists, and anyone who loves hands-on electronics projects.

Key Features

• USB-C Charging Input: Modern USB-C port for convenient, reversible plug-in charging
• 5V 1A Output: Steady and reliable power delivery for smartphones and other USB devices
• Overcharge Protection: Built-in SMD protection circuit safeguards your 18650 battery from overcharging
• Durable Metal Construction: Solid metal shell offers excellent build quality and heat dissipation
• Compact Size: Measures just 96 × 24 × 23mm — easy to carry in a pocket or bag
• DIY Customizable: Fully customizable enclosure — ideal for personal projects, prototypes, and electronics builds
• Single Cell Design: Compatible with standard 18650 lithium-ion batteries (battery not included)
• Available in Black

Specifications

What's in the Box?

Each order includes one 18650 metal power bank DIY case with an integrated SMD protection and charging board. Please note: 18650 batteries are not included — you'll need to supply your own compatible 18650 lithium-ion cell.

Perfect For

• DIY electronics enthusiasts and makers
• Prototyping and custom battery pack builds
• Emergency backup charger projects
• Replacing or upgrading old power bank shells

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery does the 18650 DIY Metal Power Bank Case support?

A: This DIY power bank case is designed specifically for a standard 18650 lithium-ion battery cell (sold separately). Simply insert a compatible 18650 cell into the case to build your own compact portable charger.

Q: Does this power bank case include overcharge protection?

A: Yes! The case includes an integrated SMD overcharge protection circuit that automatically monitors your 18650 battery and stops charging when it reaches full capacity, helping to extend battery lifespan and ensure safe operation.

Q: What devices can I charge with this power bank case?

A: The USB-A output delivers a stable 5V 1A output, which is compatible with most smartphones, earbuds, small fans, LED lights, and other standard USB-powered devices. It's great for topping up devices on the go.

Q: Is this power bank case suitable for beginners?

A: Absolutely. The case comes with the SMD charging board pre-installed, so assembly is straightforward — just insert your 18650 battery and you're ready to use it. It's an excellent starting point for beginner electronics and DIY projects.

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.