21700 Power Bank Case with PD 20W Fast Charging & Detachable Cable
Solder-free DIY 21700 power bank case with PD 20W fast charging and detachable dual Type-C cables. Compact, eco-friendly shell with battery level indicator lights.
Compact power solution with user-friendly design
This DIY power bank case supports single 21700 batteries, offering a compact and lightweight option for on-the-go charging. The eco-friendly plastic shell is designed for easy disassembly and battery replacement, extending product lifespan.
The solder-free assembly enables electronics enthusiasts to set up the power bank quickly and safely, without needing soldering skills or tools.
Efficient fast charging with integrated Type-C cables
Supports USB Power Delivery (PD) up to 20W, compatible with mainstream Type-C devices to charge quickly and efficiently.
Equipped with a detachable dual Type-C cable design allowing convenient storage while preventing cable loss during travel or outdoor activities.
Intuitive battery and charging indicators
Four LED lights display the battery level clearly—when fully charged, all four lights remain lit.
A green light indicates active fast charging, helping users monitor charging status at a glance.
Safe and reliable protection features
Built-in protections against overcharge, over-discharge, overvoltage, and overcurrent ensure safe and stable operation for both the battery and connected devices.
Key specifications
- Material: Eco-friendly plastic shell
- Size: 85mm x 50mm
- Supports Single flat-top 21700 battery (not included)
- Mainboard includes USB fast-charge output port, Type-C bidirectional fast-charge port, and integrated Type-C cable
- Charging parameters: 5V2A / 5V3A / 9V2.2A / 12V1.67A
- Output parameters: 5V2A / 5V3A / 9V2.2A / 12V1.67A / 10V2.25A
What's in the box
1 DIY 21700 power bank case unit
