Description
This listing is for 1 x 134N3P USB Power Bank Circuit Board, a compact charging and boost module designed for DIY power bank applications.
It charges a single 3.7V lithium battery and boosts the output to 5V via USB. Features built in protection and high efficiency power conversion perfect for portable USB charging projects.
- Specifications:
- Model: 134N3P
- Input Voltage: 3.7V to 5.5V DC
- Output Voltage: 5V DC (USB)
- Charging Current: Up to 1A
- Output Current: Up to 1A
- Battery Charge Cut-off Voltage: 4.2V ±1%
- Battery Discharge Cut-off Voltage: 2.9V ±1%
- Discharging Efficiency: ~85% (Input 3.7V, Output 5V @ 1A)
- Quiescent (Standby) Current: 8µA
- Charging Indicator:
- Red LED flashing = Charging
- Red LED steady = Fully charged
What You Get:
- 1 x USB Power Bank Charging & Boost Circuit Board (134N3P)
Features:
- Micro USB input for battery charging
- Standard USB-A output with boost converter
- Built-in LED charging status indicator
- Integrated protections:
- Overvoltage protection
- Short-circuit protection
- Overload protection
- Compact and easy to integrate into custom enclosures
Ideal For:
- DIY power banks
- Portable 5V USB device charging
- Arduino or Raspberry Pi power solutions
- Lithium battery charging and regulation
