Overview of Roy Charge Controller 20A /24V

This Auto Solar Panel Charger Controller 20A / 24V is needed in virtually all solar power systems that utilize batteries. It regulates the power going from the solar panels to the batteries and It slowly lower the amount of power applied to the batteries as the batteries get closer and closer to fully charged.

Roy Charge Controller 20A /24V Features

  • Vivid LCD graphic symbols

  • Simple button operation

  • Automatic identification of system voltage level

  • Intelligent PWM charging mode 

  • Adjustable charge-discharge protection

  • Automatic temperature compensation

  • Settable operation mode of load

  • Battery reverse-discharge protection

  • Battery low voltage disconnection(LVD)

  • Battery reverse connection protection

  • Overcurrent protection

  • USB output


Technical Specifications of Roy Charge Controller 20A /24V 

Model: 20DU

PV voltage: ≤50V

System Voltage: /24V Auto 

HVD: 16.00V×1/×2/×3/×4

Rated discharging current: 20A

No-load loss: ≤13mA

Charge loop voltage drop: ≤0.21V

Charging mode: PWM 4-stage(bulk, absorption,float, equalized):

Voltage float charging: 13.8(13V~15V)×1/×2/×3/×4

Voltage absorption charging: 14.4V(13V~15V) ×1/×2/×3/×4

Duration of absorption charging: 2hs

LVD: 10.7V(10V~14V) ×1/×2/×3/×4

LVR: 12.6V(10V~14V) ×1/×2/×3/×4

Load working mode: Regular control mode; Light control with switch-off point at night and switch-on point before dawn 

Light control voltage: 5V(1V~10V) ×1/×2/×3/×4

Battery type: GEL, SLD, FLD and USR(default)

USB: 5V 1A

Man-machine interface: LCD, 2 buttons

Wiring: PCB terminal, ≤6mm

Working temperature: -20 ~ +55 °C


Storage temperature: -30 ~ +80 °C

Working humidity: 10% ~ 90%, no condensation


Dimension: 188 x 95 x 46.5mm

IP Code:  IP30



Optional function: Remote communication,TTL, standard ModBus protocol


More Information
Product Name Roy Solar Charge Controller 20A / 24V (TK20DU)
brand Roy Solar
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