DIY 5×21700 Battery Power Bank Case – LCD, Type-C Input
DIY 5×21700 Battery Power Bank Case – LCD, Type-C Input
DIY 5×21700 Battery Power Bank Shell – LCD Display & Dual USB Output
Build your own high-capacity portable charger with this versatile DIY Battery Storage Case. Designed to hold 5×21700 lithium batteries (not included), this sleek shell features an LCD power indicator, dual USB output ports, and a Type-C input for convenient recharging. Whether you're heading outdoors, camping, or just need a reliable backup charger, this lightweight and compact case has you covered.
Key Features
- LCD Display: Real-time battery level indicator so you always know how much charge remains.
- Type-C Input: Modern, reversible charging port for easy top-ups.
- Dual USB Output: Charge two devices simultaneously — 5V/2.1A + 5V/2A.
- Built-in Protection Circuit: Overvoltage, overcurrent, and undervoltage protection keeps your batteries and devices safe.
- Lightweight & Portable: Compact plastic construction makes it ideal for travel, outdoor adventures, and everyday carry.
- Multiple Color Options: Available in Black, White, Blue, and Green.
- DIY Friendly: No soldering required — simply insert your 21700 cells and go.
Specifications
| Battery Compatibility | 5 × 21700 (batteries not included) |
| Input | Type-C |
| Dual Port Output | 5V / 2.1A |
| Single Port Output | 5V / 2A |
| Material | Plastic |
| Colors Available | Black, White, Blue, Green |
| Country of Origin | Made in China |
What's in the Box
- 1 × DIY Battery Power Bank Case (batteries NOT included)
Note: Please allow 1–2 cm tolerance due to manual measurement. Colors may vary slightly between monitors and actual product.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What batteries are compatible with this DIY power bank case?
A: This case is designed specifically for 5×21700 lithium batteries. Please note that batteries are NOT included with the purchase — you will need to source your own 21700 cells separately.
Q: Does this power bank case support fast charging?
A: The case offers a dual USB output of 5V/2.1A and 5V/2A, providing efficient charging for most smartphones and devices. The Type-C input allows for convenient recharging of the case itself.
Q: Is there any protection against battery damage?
A: Yes! The built-in circuit board includes overvoltage, overcurrent, and undervoltage protection, helping to safeguard both your batteries and the devices you're charging.
Q: Can I use this case while traveling or outdoors?
A: Absolutely. The lightweight plastic construction and compact form factor make it perfect for outdoor travel, camping, hiking, or any on-the-go use.
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.