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Morningstar Sunguard 12VDC PWM Charge Controller - SG-4 4.5A

Morningstar Sunguard 12VDC PWM Charge Controller - SG-4 4.5A

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Morningstar Sunguard 12VDC PWM Charge Controller - SG-4 4.5A

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SKU PES-PA-ELC-0257

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$42.00 USD

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SKU: PES-PA-ELC-0257
MPN: SG-4 4.5A
Min purchase: 10 pcs

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Morningstar Sunguard 12VDC PWM Charge Controller - SG-4 4.5A $42.00

Specifications

Datasheet

Amperage 5A

Product Category Charge Controller

Certifications

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Morningstar SunGuard SG-4 4.5A 12VDC Charge Controller

The Morningstar Corporation SG-4 4.5A charge controller is an efficient and reliable solution for managing solar power systems. Designed specifically for 12-volt batteries, it delivers advanced PWM charging technology to ensure maximum energy delivery while safeguarding your solar investment. Whether used for off-grid applications or as a backup solution, this controller maximizes battery life and efficiency.

Product Features

Solid State Reliability

The Morningstar SG-4 Charge Controller features a 100% solid-state design, eliminating the need for mechanical relays. Its use of MOSFETs ensures reliable and swift switching with minimal wear over time.

Outdoor-Ready Wiring

Equipped with size #16 AWG wires and Hypalon insulation, the controller is prepared for outdoor environments, offering durable and weather-resistant performance.

Advanced Battery Regulation

The SG-4 utilizes advanced series PWM charge control, providing a seamless transition from 0 to 100% PWM duty cycle, ensuring efficient and stable charging of your batteries.

Temperature Compensation

Featuring an ambient temperature sensor, it adjusts the charging voltage by -28 mV per C, accommodating varying thermal conditions for optimum performance.

Reverse Current Protection

With built-in nighttime discharge protection, the controller prevents battery discharge through the solar array, eliminating the need for additional blocking diodes.

How It Works

The Morningstar SG-4 Charge Controller operates by intelligently managing solar input, battery charging, and system safety functions. It effectively maintains battery health and system efficiency, making it suitable for both technical and general users.

PWM Charging Technology

The core of the SG-4 is its PWM charging technology, which adjusts the charging current to maintain battery health and balance charging speed with longevity.

Environmental Adaptability

By using a built-in temperature sensor, the controller adapts the charging voltage according to real-time environmental conditions to optimize charge.

Reliable Performance

Its solid-state components and encapsulated design ensure that the SG-4 delivers consistent performance in varying environmental conditions, making it reliable for diverse applications.

Specifications

System Voltage	12 V
PWM Setpoint	14.1 V
Max. Solar Voltage	30 V
Rated Solar Input	4.5 A
Max. Solar Short Circuit Rating	5.5 A
Temperature Compensation	-28 mV/C
Operating Temperature Range	-40 to +60 C
Self-consumption	6 mA
Reverse Current Leakage	<10 uA
Wire Size	#16 AWG
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)

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Morningstar SunGuard SG-4 4.5A 12VDC Charge Controller

Product Features

Solid State Reliability

Outdoor-Ready Wiring

Equipped with size #16 AWG wires and Hypalon insulation, the controller is prepared for outdoor environments, offering durable and weather-resistant performance.

Advanced Battery Regulation

The SG-4 utilizes advanced series PWM charge control, providing a seamless transition from 0 to 100% PWM duty cycle, ensuring efficient and stable charging of your batteries.

Temperature Compensation

Featuring an ambient temperature sensor, it adjusts the charging voltage by -28 mV per C, accommodating varying thermal conditions for optimum performance.

Reverse Current Protection

With built-in nighttime discharge protection, the controller prevents battery discharge through the solar array, eliminating the need for additional blocking diodes.

How It Works

PWM Charging Technology

The core of the SG-4 is its PWM charging technology, which adjusts the charging current to maintain battery health and balance charging speed with longevity.

Environmental Adaptability

By using a built-in temperature sensor, the controller adapts the charging voltage according to real-time environmental conditions to optimize charge.

Reliable Performance

Its solid-state components and encapsulated design ensure that the SG-4 delivers consistent performance in varying environmental conditions, making it reliable for diverse applications.

Specifications

System Voltage	12 V
PWM Setpoint	14.1 V
Max. Solar Voltage	30 V
Rated Solar Input	4.5 A
Max. Solar Short Circuit Rating	5.5 A
Temperature Compensation	-28 mV/C
Operating Temperature Range	-40 to +60 C
Self-consumption	6 mA
Reverse Current Leakage	<10 uA
Wire Size	#16 AWG
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)

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

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Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

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I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

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You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

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Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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