DC-DC Step Down XL4005 (Peak 5A) Charger - Adj. Voltage & Current w/ Voltmeter & Ammeter Display

  • RM30.00

  • Product Code: XL4005 Vol.Amp w/ Display
  • Availability: In Stock




  • Constant current and constant voltage battery charger for various type of battery (NiCad, NiMH, LiPO, Lead-Acid, etc)
  • Work as a power supply with current limit, can test a circuits in safety condition
  • LED Driver



  • Adjustable voltage & current output
  • Voltmeter & Ammeter Display
  • Charging and fully charge led indicator light
  • Serial connection for voltage & ampere reading
  • Screw terminal for wires connection



  • Module Properties: non-isolated step-down (BUCK) switching regulator
  • Input voltage: DC 5.0 - 32V
  • Output Voltage: Adjustable 0.8 - 30V DC (Input must 1.5V greater than output)
  • Output Current: Adjustable continues 4A, max. 5A (Heat sink required)
  • Measurement Accuracy: ±0.1V (To ensure the accuracy, keep the input above 4.5V)
  • Conversion efficiency: Up to 95% (Output voltage higher, the higher the efficiency)
  • Output ripple: 50mV (Max) 20M bandwidth
  • Minimum dropdown voltage:1.5V
  • Switching Frequency: 300KHz
  • Display: Dual 4 digit – 0.28” Digital tube
  • Operating temperature: Industrial grade (-40 to +85°C)
  • Size: 51mm x 26.3 mm x 14mm



*Note: Gently rotate the potentiometer counter-clockwise around 7-8 round will drop the output voltage for the first time usage .


Video credit to Julian Ilett


TTL Communication

  • Baud Rate: 9600 Bps
    • BB CC ADDR 00 XX XX CRC (current return command)
    • BB CC ADDR 01 XX XX CRC (voltage returns to the command)
  • BB CC for the header (2 bytes)
  • ADDR for the module address (1 byte)
  • 00 to read the current command (1 byte)
  • 01 is a read voltage command (1 byte)
  • XX XX arbitrary value (2 bytes)
  • CRC CRC checksum (1 byte)

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Tags: Step-Down