DIY power bank module solderless — 1–5x 18650 cells, LCD indicator, USB output, LED flashlight 12V Relay TIP42C Transistor DARLINGTON PNP

TIP42C Transistor DARLINGTON PNP

On-chip Debugging support and programming

Master and Slave mode configurable via AT commands

The 150W DC-DC Boost Converter steps up an input voltage of 10V–32V to an adjustable output of 12V–35V

5mm audio jack)

DIY power bank module solderless — 1–5x 18650 cells, LCD indicator, USB output, LED flashlight 12V Relay TIP42C Transistor DARLINGTON PNPBuild your own portable USB power bank without any soldering using this all in one DIY power bank module. Designed for simplicity and flexibility, it accepts 1 to 5 standard 18650 lithium ion cells (3. 6V3. 7V, not included) and provides a regulated 5V USB output for charging smartphones, tablets, and other USB devices. The built in LCD display shows remaining battery capacity and charging status at a glance, while the integrated LED flashlight adds