General description The 3X 18650 Battery Power Bank Box is a versatile charging solution designed for DIY enthusiasts. This power bank case allows you to create a custom power bank using 18650 batteries (not included). It features a sleek black plastic design and an LCD display for monitoring battery status. Technical specifications Battery capacity: 20000mAh Installable cells: 6 sections Size: 146 x 77 x 23 mm Material: Plastic Color: Black Weight: Not specified Compatibility and accessories Compatible with protocols: PD3.0, PD2.0, QC4+, QC4, QC3.0, QC2.0, SCP, PE2.0, PE1.1, SFCP Battery model required: 18650 (flat head, not included) Installation Ensure batteries are installed correctly: positive pole (flat end) goes in the designated slot, and the spring side is the negative pole. Do not attempt to disassemble the shell after installation; it is designed for one-time assembly. Usage Use the power bank case to charge devices by connecting them to the output ports once the batteries