DIY 100W Powerbank Case for 4x 21700 Batteries

This DIY powerbank case is designed for users to assemble their own portable charger by installing four 21700 batteries in series (batteries not included). The case features a transparent ABS-PVC shell allowing a unique look at the internal components and battery status.

Users must weld batteries to the motherboard, connecting the positive and negative poles correctly to activate the circuit. After assembly, charging the pack activates the motherboard for standard use.

Supports full range two-way PD fast charging up to 100W output. Compatible with PD, QC, AFC, SCP protocols to fast charge laptops, phones, and iPads worldwide. This flexibility makes it a universal charging solution for multiple device types.

• 100W output power
• Supports PD, QC, AFC, SCP protocols
• USB and dual Type-C ports for varied device connectivity

Equipped with a high-quality imported LED screen integrated into the transparent case, it provides real-time indication of remaining power for convenient and accurate battery monitoring during use.

• Clear LED power display
• Instant battery status updates

Made from durable ABS-PVC material, the rigid case measures approximately 153x55x34mm for a practical balance between portability and capacity. Its design ensures safety and reliability during travel, including airplane transport without declaration.

• Durable black ABS-PVC case
• Compact dimensions for portability
• Approved for safe air travel

• Capacity designed for 4 pcs 21700 batteries (batteries not included)
• Input: DC 5V/3A, 9V/3A, 12V/1.5A, 10V/2.25A
• Outputs: Type-C1 5V/3A to 20V/5A; Type-C2 5V/3A to 20V/3A; USB 5V/3A to 10V/2.25A
• Size: approximately 153x55x34mm

• 1 x DIY powerbank case kit (includes motherboard and shell)