20000mah Power Bank Case Bigmax with Circuit Board – 22.5W Fast Charging | 3.7V 20000mAh Polymer Battery Support | Type-C PD + Dual USB | Display | Black & White

Specification:

1. Battery Type: Supports 2 × 3.7V Li-Po Polymer Batteries (10000mAh recommended)
2. Output Ports: 2 × USB-A (22.5W max), 1 × Type-C PD (in/out)
3. Input Ports: Micro USB & Type-C
4. Display: LED digital screen (battery percentage)
5. Fast Charging Protocols: PD 20W / QC 3.0 / SCP / FCP
6. Output Voltage: 5V/9V/12V
7. Circuit Protection: Over-voltage, over-current, and short-circuit protection
8. Shell Material: Durable ABS plastic
9. Color Options: Black / White
10. Dimensions: Approx. 145 × 70 × 27 mm
11. Weight: Approx. 100g (without battery)

Description:

This power bank DIY case is specially designed to work with two 3.7V polymer batteries (not included) to create a compact and powerful 20000mAh-class fast charger. It supports modern fast-charging standards through dual USB and Type-C ports and features a digital display for easy monitoring. Ideal for custom power solutions.

Application:

1. DIY power bank with polymer battery
2. Fast-charging solution for mobile devices
3. Project builds and portable charging kits
4. Backup power for travel and outdoor use
5. Power bank business or resale with own battery setup