Power bank PCBA 3 USB 5V 2A board Motherboard 18650 3.7V battery charging board


1. 3 USB charging interface, can charge 3 mobile phones at the same time
2. Dual IC control, synchronous rectification, conversion rate up to 90%
3. Use high-quality power supply, double-tube rectifier, stable performance
4. Over-discharge, overcharge, and overload protection circuit
5. It can automatically identify and output 5V1A or 2A current according to the device.
6. Suitable for 3.7-4.2V rechargeable lithium batteries, such as mobile phone batteries, tablet batteries, 18650 batteries, etc.
7. The positive electrode of the lithium battery is connected to B+, and the negative electrode of the lithium battery is connected to B-. Be careful not to reverse the B+ and B- of the boosted battery, otherwise they will burn.
8. The first application requires activation of the Micro USB port.
9.Module size: 56*17mm
10. Lighting method: 4 blue lights, charging and running, discharging and flashing
11. Start-up method: double-click the button to turn on; automatically shut down when no load
12. Standby power consumption: 50-100 uA