Morningstar SG-4 SunGuard Solar Controller

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Morningstar SG-4 SunGuard Solar Controller
List Price: $39.60 Save $6.60!

Sale Price: $33.00

In stock *May be eligible for a Solar Tax Credit

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SunGuard is a single module, compact solar charge controller for small systems, ideal for both professional and consumer use. Featuring the same components, charging circuit, and build quality of Morningstar’s industry-leading SunSaver controllers, SunGuard is easily the most compact, advanced and economical solar charge controller on the market today. With SunGuard, there’s no reason not to insist on Morningstar quality with any system design—no matter how small.


  • Rugged design—100% solid state, epoxy encapsulated; rated for 25% overcurrents (no need to de-rate)
  • Longer battery life—series design PWM charging (instead of shunt) with temperature compensation, low self-consumption
  • Easy to install—outdoor rated connecting wires make a waterproof connection to the solar module and battery



Rated Solar Input: 4.5 Amps 

Max. Input (5 min.): 5.5 Amps 

System Voltage: 12 Volts 

Max. Solar Voltage: 30 Volts 

Regulation Voltage: 14.1 Volts 

Accuracy: 60 mV 

Self-consumption: 6 mA

Temp. Compensation: -28 mV/oC

Operating Temperature: –40 to +60°C

Dimensions: 6.4 x 5.1 x 3.8 cm / 2.5 x 2.0 x 1.5 in

Weight: 3 oz (0.09 kg)

* All prices, specifications and availability subject to change without notice. Contact us for most current information. Sale prices, rebates, or discounts may not be eligible with certain promotions.

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Shop with confidence knowing you'll receive free technical support from beginning to end until your system is powered up and you're generating free energy from the sun!

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