5V 2A DC-DC 3V to 5V Step-up Voltage converter Module DIY for Power Bank
1.LCD screen display, with battery voltage display, real-time input and output current display, temperature measurement, input and output ports instructions, etc.
2 Output Current Current 2A, 1.6A input
3 with LED lights
Note: Press access to the battery positive and negative B + B-cell battery positive and negative, reverse will burn
:1*Step-up Voltage converter Module