DIY 100W PD Charger Box for 4pcs 21700 Batteries

This DIY charger case supports four 21700-size batteries connected in series, ideal for building your own 20,000mAh power bank.

Please note batteries and welding accessories are not included. Proper battery welding to the motherboard "B+" and "B–" terminals is required.

Supports full protocol two-way PD charging delivering up to 100W output, compatible with laptops, smartphones, and tablets.

Multi-protocol support includes PD, QC, AFC, and SCP ensuring wide device compatibility.

Equipped with a high-quality imported LED screen that displays remaining battery power in real time.

Transparent casing design allows you to monitor internal components and battery status visually.

Constructed with ABS-PVC material for durability and lightweight feel.

Compact dimensions: approximately 153 x 55 x 34 mm for portability.

• Capacity: Supports 4pcs 21700 batteries, total 20,000mAh
• Input: DC 5V/3A, 9V/3A, 12V/1.5A, 10V/2.25A
• Output Type-C1 & Type-C2: 5V/3A, 9V/3A, 15V/3A, 20V/5A and 20V/3A respectively
• USB Output: 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A
• Material: ABS-PVC
• Color: Black

• 1 x DIY power bank case kit (motherboard and casing)
• Note: Batteries and welding accessories not included