21700 DIY Power Bank Case with PD 20W Fast Charging
Compact DIY power bank case designed for 21700 batteries with PD 20W fast charging support. Features solder-free assembly, detachable Type-C dual cables, and battery level indicators.
- Eco-friendly plastic shell
- Solder-free, quick setup
- Compatible with mainstream Type-C devices
- Four LED battery indicators
Safe Solder-Free DIY Assembly
This power bank case features a solder-free design making battery installation and circuit assembly quick and safe—perfect for electronics enthusiasts seeking an easy set-up without tools.
Efficient PD 20W Fast Charging
Supports Power Delivery 20W output for fast, efficient charging compatible with most Type-C devices, ensuring rapid power delivery wherever you go.
Convenient Detachable Dual Type-C Cables
Includes integrated dual Type-C cables that are detachable for easy storage and portability, so you never forget your charging cables on the go.
User-Friendly Maintenance and Battery Replacement
The eco-friendly plastic shell is designed for effortless disassembly, facilitating battery replacement or circuit maintenance to extend product lifespan.
Compact Size for Outdoor and Everyday Use
Sized at approximately 85×50 mm and designed specifically for a single flat-top 21700 battery, this case is ideal for outdoor activities, commuting, and everyday portability.
Multiple Safety Protections
Built-in safeguards protect against overcharge, over-discharge, overvoltage, and overcurrent, ensuring safe and reliable performance during use.
Key Specifications
- Material: Eco-friendly plastic shell
- Size: 85×50 mm
- Battery type: Single flat-top 21700 battery (not included)
- Output: PD 20W with 5V/2A, 5V/3A, 9V/2.2A, 12V/1.67A, and 10V/2.25A
- Charging and output ports: USB fast-charge output port, Type-C bidirectional fast-charge port, integrated dual Type-C cables
- LED indicators: Four lights display battery level and charging status
What's in the box
- 1 x 21700 Power Bank DIY Case (battery not included)
