20A 12/24V PWM Solar Charge Controller (TP-SC24-20)


Item# TP-SC24-20

Tycon Solar®’s new TP-SC24-20 solar controllers are 3 stage PWM type temperature compensated battery charging controllers. The controllers are auto-ranging to accommodate 12V and 24V battery systems. They are designed to charge AGM or GEL type sealed lead acid batteries. They have an integral LCD display that shows battery voltage, temperature, load current and solar current. They have multiple load operating modes which can be set through the “key” button on the controller.

The load output has a soft start feature so it can smoothly and reliably power up high capacitance loads up to 20A. There is a convenient On/Off button to disconnect load power when the unit is operated in the default mode (15).

They have full electronic protections for short circuit, reverse current, overvoltage, overcharge, over-discharge and over-temperature. The built-in over-discharge protection and low self consumption ensures the battery is not overdischarged, which greatly increases the life of the batteries. All protections are auto-recovery.

The units are protected against lightning strikes with TVS diode protection. They operate over a wide industrial temperature range. Electronics are conformal coated for environmental protection.

An automatic battery equalization charge automatically engages once every 30days. The equalization charge helps to balance the batteries in an array and reduce the possibility of battery sulfation. The equalization charge is limited to 1- hour duration to preserve battery life.

A special feature is the 5V 1A USB charging port, so a technician can charge his phone or tablet while on site.

Connections are via 6 screw terminals for wire size up to 10AWG. There are four screw holes(3.5mm) for mounting. The controllers are internally fused for protection, but we recommend always using an external 20A fuse between the controller and the battery. There are four screw holes(3.5mm) for mounting.



  • 3 Stage PWM Temperature Compensated Charging
  • Fully Automatic Operation
  • LCD Displays Battery Voltage, Temp, Load Current and Solar Current.
  • Autoranging 12V or 24V Battery Arrays
  • Multimode Load Operation – Normal (default) or Light Control
  • Soft Start Load Output to Power High Capacitive Loads
  • Automatic 30day Battery Equalization
  • Conformal Coated Electronics for Environmental Protection
  • TVS lightning protection, Industrial Temperature Range
  • USB Charging Port
  • Low self consumption <0.3W


  • Remote Power Systems
  • Solar Lighting
  • Solar Power Applications


Spec Sheet PDF

Rated Voltage

12/24 (Auto Detect),  Max <35V

Rated Current (Solar and Load)


Maximum Solar Panel Size

260W @ 12V ;  520W @ 24V

Maximum Solar Input Voltage


Boost (Absorption) Charge Voltage

14.4V @ 12V 28.8V @ 24V

Boost Charge Timeout

2 Hours

Float Voltage

13.8V @ 12V 27.6V @ 24V

Equalize Charge Voltage

14.6V @ 12V 29.2V @ 24V

Equalize Charge Interval and Timeout

30 Days ; 1 Hour

Overvoltage Protection

17.0V @ 12V 34V @ 24V

Over-Discharge Voltage

OFF:  11.1V @ 12V 22.2V @ 24V

ON:  12.6V @ 12V 25.2V @ 24V

Light Control Voltage

Light Control On: 5V @ 12V ; 10V @ 24V

Light Control Off: 6V @ 12V ; 12V @ 24V

Light Control Delay Time

1 Minute


< 0.3W

Temperature Compensation


Max Wire Size

10 AWG

Voltage and Current Accuracy


Environmental Protection




Operating Temp

-30°C to 60°C (-22°F to 140°F)


130 x 75 x 38mm (5.1 x 3.0 x 1.5”)


160 g   (5.6 oz )


3 years

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