DIY Power Bank Case – 3x 18650 Battery Box with 3 USB Ports
DIY Power Bank Case – 3x 18650 Battery Box with 3 USB Ports
Build Your Own Power Bank with This Versatile 3-Slot 18650 Battery Case
Take charge of your portable power with this DIY Power Bank Case. Designed to hold three 18650 batteries, this compact and lightweight enclosure lets you build a custom external charger that keeps your devices powered on the go. With three USB output ports and straightforward plug-and-play design, it's perfect for electronics hobbyists, campers, travelers, and anyone who wants a budget-friendly backup charging solution.
Please Note: Batteries are NOT included. This is a case/shell only — you will need to supply your own 18650 cells.
Key Features
- 3 x 18650 Battery Slots – Accommodates three standard 18650 lithium cells for generous portable capacity
- Triple USB Outputs – Charge multiple devices simultaneously with three USB ports
- Input: 5V / 1A | Output: 5V / 1A
- Compact & Lightweight – Dimensions: 22mm × 65mm × 98mm; Weight: just 40g
- Multiple Color Options – Available in Black, White, Pink, and Blue to suit your style
- DIY Friendly – Easy to assemble; no soldering required
- Durable Shell – Sturdy outer casing protects your batteries during travel and everyday use
Specifications
| Input | 5V / 1A |
| Output | 5V / 1A |
| Compatible Battery | 18650 (x3, not included) |
| USB Ports | 3 |
| Colors Available | Black, White, Pink, Blue |
| Dimensions | 22mm × 65mm × 98mm |
| Weight | 40g |
| Country of Origin | Made in China |
Great For
- DIY electronics projects and prototyping
- Camping, hiking, and outdoor adventures
- Emergency phone charging backup
- Travel and everyday portable charging needs
Related Products You May Like
- 10-Piece Gardening Tool Kit – Iron Head & Plastic Handle
- 10-Pc Hex Nut & Bolt Extractor Kit 9–19mm | HIP Tools
- 105° Right Angle Driver with 1/4" Hex Screwdriver Bit | HIP
Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Does this DIY power bank case come with 18650 batteries included?
A: No, batteries are not included. This product is the case and charging circuit only. You will need to purchase three 18650 lithium batteries separately and insert them into the case to use it as a power bank.
Q: How many devices can I charge at the same time with this power bank case?
A: This case features three USB output ports, so you can charge up to three devices simultaneously. Each port outputs 5V / 1A, making it compatible with most smartphones, earbuds, and other USB-powered devices.
Q: What colors are available for the 18650 DIY power bank case?
A: This power bank case is available in four colors: Black, White, Pink, and Blue. Select your preferred color from the options on the product page.
Q: Is this power bank case easy to assemble?
A: Yes! The case is designed for easy DIY assembly — simply insert three 18650 cells into the slots, close the case, and you're ready to charge. No soldering or special tools are required.
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.