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Morningstar SunGuard Charge Controller - 4.5A (SG-4)


In Stock

Perfect for small single-use dedicated systems. Fixed voltage setpoints optimized GEL or AGM lead-acid batteries.

SKU: 25739

Morningstar SunGuard Charge Controller - 4.5A (SG-4)

The 4.5-amp, 12-volt Morningstar SunGuard™ Charge Controller is the world's leading single module controller. It combines all the advantages of the SunSaver charging circuit with less-expensive packaging to provide an economical controller for small PV systems. 5-year warranty.

Morningstar SunGuard SG-4 Charge Controller Features

  • Series design (not shunt)
  • 100% solid state
  • True 0 - 100% PWM duty cycle
  • Setpoint accuracy to 60mV
  • Temperature compensation
  • Rated for 25% overloads
  • No need to de-rate
  • Lightning protected with 1500W transorbs
  • Self-consumption is 6mA
  • Fully encapsulated in epoxy potting
  • ABS plastic, impact-resistant case
  • Outdoor rated, Hypalon connecting wires
  • 5-year warranty


Morningstar SunGuard SG-4 Charge Controller Specs

  • 2.5" H x 2" W x 1.5" D
  • 3 oz.
  • Nominal battery voltage: 12V
  • Peak input voltage: 30V
  • Maximum battery charging current: 4.5A
  • Wire: #16 AWG
  • Manufacturer: Morningstar
  • Model number: SG-4

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. Click here to see an estimate of our delivery times with standard FedEx Ground shipping.

Returns & Replacements
Regularly stocked, non-special-ordered, and non-custom-built items can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 30%. Freight shipping is non-refundable.

For more, please read our full return policy.

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