50W Lithium Battery Charging LED Lighting Control Board with Bluetooth/Radio/USB Flash Disk Play Function


The 50W PCB is a LED control board used in a lithium battery power supply system. The product has a lithium battery charging management system, LED dimming control part, USB charging interface module, FM radio module, USB audio playback, Bluetooth connection audio playback.

  • Support Bluetooth 4.0 connection
  • FM FM radio 88MHz-108MHz
  • Support U disk music player function
  • USB interface supports U disk / mobile phone charging automatic recognition function
  • Support 30W LED constant current control, high efficiency (typical efficiency 95%)
  • Support LED dimming
  • With charging overvoltage protection,
  • With discharge Undervoltage protection
  • High charging efficiency (typical efficiency 96%)
  • With charger input reverse connection protection
  • Very low standby current when powered by battery: <15uA
  • With battery indicator
  • The double-sided PCB layout makes it more reliable.
  • With LED load detection function, when the switch sets the product to LED lighting mode, if the LED is not connected for 2 hours, it will sleep
Technical parameter


  • 156MHz 32-bit RISC processor core internal ROM internal RAM for data and programming
  • Bluetooth 4.2
  • Compatible with Bluetooth V4.1/V4.0/2.1+EDR
  • Support AFH to dynamically detect channel quality to improve Bluetooth transmission quality
  • Maximum Bluetooth transmit power: >4dBm
  • Bluetooth receiving sensitivity: <-88dBm
  • Built-in high-performance DAC and ADC


  • Radio Frequency: FM 88-108MHz
  • Superior sensitivity: better than 1.5uVemf
  • Stereo signal to noise ratio: 0.03%THD
  • L/R channel separation: >45dB

USB interface

  • Support music format: MP3/WQV/WMA/APE/FLAC
  • USB output voltage: 5V
  • USB port output current: 1000mA
  • Support mobile phone charging function: Apple/Android

Audio amplifier

  • Working Mode: Digital Class D
  • Output power: 2*8W
  • Over-current/short-circuit current protection
  • Over Temperature Protection

Charging Part

  • Adapter Battery: 4 Lithium batteries
  • Charging voltage: 16.8V ±1%
  • Charging current: 3A
  • Charging mode: CV/CC

LED Lighting Part:

  • LED power 50W
  • LED terminal current ripple <15% (camera shooting does not flicker)
  • Brightness adjustment: Off/10%/50%/75%/100%
  • Over Temperature protection
  • Short circuit protection
  • Portable Speaker
  • Portable mobile lighting fixture