Operating from Changhwa, Taiwan, we are a renowned electronics company manufacturing and supplying 2 Ports USB Power PCB Board. It is installed by connecting the power negative to circuit board B- and the power positive to circuit board B+. The flashlight LED is started by double pressing the switch and after pressing one more time, it turns off. The board has an insurance resistor that burns the polarity if batteries are connected incorrectly. The offered 2 Ports USB Power PCB Board is series soldered.
Overcharge and overcurrent protection
Wide operating temperature