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Morningstar SunGuard SG-4 4 Amp 12VDC PWM Charge Controller

Morningstar SunGuard SG-4 4 Amp 12VDC PWM Charge Controller

Our Price: $42.31

Product Code: SG-4

Description Document(s)

Morningstar SunGuard SG-4 4 Amp 12VDC PWM Charge Controller

Manufacturer Part#: SG-4

Morningstar’s SunGuard is the world’s leading single module controller. Morningstar has combined all the advantages of their SunSaver charging circuit with less expensive packaging to provide an economical controller for small PV systems.

Morningstar's SunGuard SG-4 is the most advanced small, economical solar charge controller on the market today. Providing exceptional reliability, PWM battery charging, consistent high quality & low cost. The SunGuard is able to match the quality and performance of the world-leading SunSaver controllers as they are made on the same high speed, automated production lines, use the same charging circuit, and uses the same components.


  • Advanced, Small & Economical - ISO 9002 quality programs. Series design (not shunt). 100% solid state. True 0 to 100% PWM duty cycle. Setpoint accuracy to 60 mV.Temperature compensation. Rated for 25% overloads. No need to derate. Self-consumption is 6 mA.
  • Protected & Safe - Lightning protected with 1500 W transorbs. Fully encapsulated in epoxy potting. ABS plastic, impact-resistant case. Outdoor rated, Hypalon connecting wires.
  • Advantages - SunGuard's SG-4 PWM charging compared to most other On-Off solar regulators on the market: Typically 30% more solar energy into the battery per day. Average battery State-of-Charge is 90% - 95% compared to 55% - 60% for On-Off regulators.

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