DIY Power Bank Case for 2×18650 Batteries | Secure Lock Shell
DIY Power Bank Case for 2×18650 Batteries — No Soldering Required
Keep your devices charged on the go with this compact, lightweight DIY Power Bank Case designed for two 18650 flat-top batteries. Whether you're commuting, traveling, or heading outdoors, this portable battery housing lets you swap batteries in seconds — no tools, no soldering, no hassle.
Key Features
- No-Solder Assembly: Snap-together design means anyone can assemble or swap batteries quickly — no professional tools or technical experience needed.
- Durable Plastic Construction: Made from quality plastic that balances sturdy protection with a lightweight, pocket-friendly profile.
- Secure Lock Shell: A built-in locking mechanism keeps the case firmly closed during use, preventing accidental battery displacement.
- Flexible Battery Management: Supports 2× 18650 flat-top batteries (not included), making it easy to carry spare cells and extend your power supply wherever you are.
- Compact & Travel-Ready: Measures approx. 90 × 45 × 23 mm (3.54 × 1.77 × 0.9 in) — fits easily in a pocket, bag, or backpack.
- Color Options: Available in classic Black or clean White.
Specifications
- Material: Plastic
- Dimensions: Approx. 90 × 45 × 23 mm / 3.54 × 1.77 × 0.9 in
- Compatible Batteries: 2× 18650 flat-top batteries (NOT included — must be purchased separately)
- Colors: Black, White
- Country of Origin: Made in China
Package Includes
- 1× Battery Box / Power Bank Case
⚠ Important Notes:
- 18650 batteries are not included — purchase separately.
- Compatible with flat-top 18650 batteries only (positive electrode must be flat).
- Observe correct polarity (+ / −) when installing batteries.
- After installing batteries, fully charge and activate the case before use.
- Please allow 1–3 cm variance due to manual measurement.
- Colors may vary slightly from screen to screen due to monitor differences.
- Power bank case only — no accessories shown in product images are included.
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What type of 18650 batteries are compatible with this power bank case?
A: This DIY power bank case is compatible with 2× 18650 flat-top batteries only. Button-top 18650 batteries will not fit correctly. Batteries are not included and must be purchased separately.
Q: Do I need any special tools or soldering skills to assemble this 18650 battery case?
A: No tools or soldering are required. The no-solder snap-together design makes assembly simple and straightforward — ideal for beginners and experienced users alike.
Q: What is the size of the DIY power bank case?
A: The case measures approximately 90 × 45 × 23 mm (3.54 × 1.77 × 0.9 in), making it compact and easy to carry during travel, commuting, or outdoor activities.
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.