Product Introduction:
- Usable Battery Type:18650 battery(not include)
- Output Voltage:5V/1A
- Input Voltage:3.2V-4.2V
- Dimension: 60x15x10mm
- 5V 1A Power Bank Charger Board Charging Circuit PCB Board Step Up Boost Module Power Mobile Phone For 18650 Battery DIY.
- Connection: The battery positive should connect B+, and battery negative should connect GND
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