Universal 18650 Battery Case with USB-C and On-Off Switch

Model Description: This case is designed for 18650 batteries and features a USB-C charging port along with an on-off switch.

Usage: The model serves as a replacement for wall-mounted outlets, providing a more sustainable and versatile power solution for various devices such as Arduinos and other boards using barrel connectors.

Construction Features: The case accommodates a standard 18650 cell, offering 12Wh of power, equivalent to four standard AA batteries. It includes a TP4056 charging board and an MT3608 step-up converter for adjustable output voltage (6V, 9V, or 12V). There are also openings for connecting the barrel connector cable and a 3mm LED to indicate power status.

Printing Recommendations: It is recommended to print with a layer height of 0.2mm using PETG or PLA. No support is needed. When using light or semi-transparent filament, the charging and full LEDs will shine through the casing.