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Item #:
1011506
Morningstar Sunguard 4.5A PWM Solar Charge Controller (SG-4) - Intelligent Solar Panel Regulator. Supports 12V Batteries, Outdoor Rated, Highly
Item #:
1011506
BHD 22
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Morningstar Sunguard 4.5A Solar Charge Controller - The Best Choice for 12V Batteries.
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What Stands Out
Intelligent Regulation
The Morningstar Sunguard features advanced PWM technology, ensuring precise battery charging and preventing overcharging, which extends battery life and optimizes performance.
User-Friendly Installation
Designed for easy installation, this solar charge controller simplifies setup for users, making it accessible for both beginners and experienced users alike.
Outdoor Durability
With outdoor-rated construction, the SG-4 withstands harsh weather conditions, ensuring reliable performance and longevity, making it ideal for outdoor solar applications.
Product Details
- Morningstar Sun Guard 4.5A 12V solar controller
- Series design for efficient performance
- Rugged and durable, with a 100% solid state and epoxy encapsulated construction
- Rated for 25% overcurrents, eliminating the need for de-rating
- Easy and convenient installation with outdoor rated connecting wires
- Waterproof connection to the solar module and battery
| Brand Name | Morningstar Corporation |
| UPC | 782290181163 |
| Unit Count | 1.0 Count |
| Manufacturer | Morningstar Corporation |
| Included Components | CONTROLLER |
| Model | SG-4 |
| Part Number | SG-4 |
| Voltage | 12 Volts |
| Display Type | LED |
| Color | WHITE/BLUE |
| Material Type | Epoxy |
| Item Dimensions L x W x H | 2.5"L x 2"W x 1.4"H (6.4 x 5.1 x 3.6 cm) |
| Item Weight | 5 Ounces (141.75 grams) |
| Brand | Morningstar Corporation |
| Product Dimensions (L x W x H) | 2.5"L x 2"W x 1.4"H (6.4 x 5.1 x 3.6 cm) |
| Material | Epoxy |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Off-Grid Users
Ideal for users relying on renewable energy in remote locations, ensuring efficient charging of 12V batteries.
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Amateur Solar Installers
Great for beginners seeking an easy-to-install charge controller with reliable performance for small solar setups.
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Outdoor Enthusiasts
Perfect for camping or outdoor activities, providing safe and efficient charging in various weather conditions.
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High Power Demands
Not suitable for applications requiring significant charging capacity beyond the 4.5A limit of this controller.
Product Description
Morningstar Sunguard 4.5A PWM Solar Charge Controller (SG-4) - Intelligent Solar Panel Regulator. Supports 12V Batteries, Outdoor Rated, Highly Reliable and Easy to Install - Designed in the USA
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Product Buying Guide
Morningstar Sun Guard 4.5A 12V solar controller is a reliable and efficient solution for managing solar panel charging for 12V batteries. With its rugged design and waterproof features, it offers a durable and hassle-free experience for users.
Product Specifications
- Series design (not shunt)
- Rugged design, 100% solid state, epoxy encapsulated
- Rated for 25% overcurrents (no need to de-rate)
- Easy to install, outdoor rated connecting wires
Key Features
- Series design for enhanced efficiency
- Rugged and durable solid-state construction
- Waterproof and outdoor-rated for reliable performance in any weather conditions
- Designed to handle overcurrent without de-rating
Usage Scenarios
- Charging 12V batteries with solar panels
- Outdoor solar panel installations in various weather conditions
Usage Scenarios
The competitors for Morningstar Sun Guard 4.5A 12V solar controller include other brands offering 12V solar charge controllers with similar features and specifications.
Some User Review
- Users appreciate the rugged design and waterproof features, making it suitable for outdoor installations.
- The ability to handle overcurrent without de-rating gives users peace of mind and confidence in the product's performance.
Competitors
- The price of Morningstar Sun Guard 4.5A 12V solar controller falls within the competitive range for similar products in the market, offering good value for its features and reliability.
Buying Considerations
- Consider the specific requirements of your solar panel system and battery to ensure the controller is compatible with your setup.
Conclusion
Morningstar Sun Guard 4.5A 12V solar controller stands out as a dependable and efficient choice for managing solar panel charging, especially for 12V batteries. Its rugged design, waterproof construction, and ability to handle overcurrent make it a reliable option for outdoor solar installations.
View LessMorningstar Sun Guard 4.5A 12V solar controller is a reliable and efficient solution for managing solar panel charging for 12V batteries. With its rugged design and waterproof features, it offers a durable and hassle-free experience for users. Continue Reading
Customer Questions & Answers
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Question:
What is the main function of the Morningstar Sunguard 4.5A PWM Solar Charge Controller SG-4?
Answer: The primary function of the Morningstar Sunguard solar charge controller is to regulate the charging of 12V batteries from solar panels. It employs Pulse Width Modulation (PWM) technology to optimize battery charging, ensuring that batteries are charged efficiently and safely. This feature significantly prolongs the life of the batteries by preventing overcharging, which can lead to battery damage. Whether you are using it for off-grid applications, recreational vehicles, or remote cabins, this charge controller is designed to provide reliable performance in various outdoor settings. -
Question:
How does PWM technology benefit the charging process?
Answer: PWM technology, or Pulse Width Modulation, benefits the charging process by ensuring a gradual and controlled charging phase, which is vital for battery longevity. Unlike simpler charge controllers that apply constant voltage, PWM adjusts the energy sent to the battery based on its charging state. This means that when the battery reaches a certain level of charge, the controller reduces the current, allowing the battery to take in more energy without damaging it. For users who rely on consistent energy sources, this helps in maximizing solar energy utilization while maintaining battery health. -
Question:
Is the Morningstar Sunguard solar charge controller suitable for outdoor use?
Answer: Yes, the Morningstar Sunguard solar charge controller is specifically designed for outdoor use. Its durable housing and weather-resistant design ensure that it can withstand various environmental conditions, including rain and dust. This makes it an excellent choice for outdoor solar applications, such as powering equipment for camping, providing energy for garden lighting, or charging batteries in remote locations. Its reliability in outdoor settings allows users to set up solar systems in locations far from traditional power sources without worrying about equipment failure. -
Question:
What types of 12V batteries are compatible with the SG-4 charge controller?
Answer: The Morningstar SG-4 solar charge controller is compatible with various types of 12V batteries, including lead-acid, gel, and AGM batteries. This versatility makes it suitable for a wide range of applications like solar power systems for homes, boats, and RVs. Understanding battery compatibility is crucial for optimizing solar charging scenarios, as different battery types have distinct charging requirements. Users should ensure they select the correct battery type to match the charge controller to enhance performance and ensure longevity. -
Question:
Can I use the Morningstar Sunguard with large solar panels?
Answer: The Morningstar Sunguard SG-4 charge controller is optimized for solar panels up to 60 watts. While larger systems can be designed, users must ensure that the total solar input does not exceed the controller’s input ratings. It is ideal for small-scale solar setups, such as those found in recreational vehicles or small cabins. If your energy needs grow, consider using multiple SG-4 controllers or upgrading to a higher capacity model for larger solar panel installations, maintaining efficiency and reliability in your solar energy system. -
Question:
What features make the SG-4 solar charge controller highly reliable?
Answer: The Morningstar SG-4 solar charge controller offers high reliability due to its robust construction, advanced PWM technology, and comprehensive electronic protections. Features such as overcharging prevention, battery temperature compensation, and reverse polarity protection ensure optimal functionality and safety. This reliability translates to peace of mind for users who depend on solar power for their operations, be it in remote areas, boats, or recreational vehicles. The controller’s proven track record in various applications reinforces its solid reputation in the solar energy market. -
Question:
How does the Morningstar SG-4 display system status?
Answer: The Morningstar SG-4 solar charge controller uses LED indicators to convey system status and performance data effectively. These LEDs provide visual feedback on charging activities and battery status, allowing users to monitor their solar system easily. Understanding these indicators helps users take necessary actions, such as adjusting their solar setup or performing maintenance. By keeping an eye on system status through these indicators, users can optimize energy use and ensure that their charging system is functioning effectively. -
Question:
What kind of maintenance does the SG-4 require?
Answer: The SG-4 solar charge controller requires minimal maintenance, making it user-friendly. Regular checks on connections, ensuring that terminals are clean and secure, are essential for optimal performance. Users should inspect the controller and batteries for any signs of wear or corrosion, especially in environments prone to moisture. Additionally, keeping the solar panels clean can maximize charging efficiency. This low-maintenance design allows users to focus on enjoying their solar-powered systems rather than worrying about extensive upkeep. -
Question:
Where can I buy the Morningstar Sunguard 4.5A PWM Solar Charge Controller SG-4 in Bahrain?
Answer: You can purchase the Morningstar Sunguard 4.5A PWM Solar Charge Controller SG-4 from Ubuy in Bahrain. Ubuy offers a wide selection of solar products and ensures that you receive high-quality items. By shopping on Ubuy, you'll also find a range of options tailored to your solar needs, along with reliable customer support for any queries regarding your purchase.
Morningstar Corporation Energy Controllers Editorial Review
The Morningstar Sunguard 6A Solar Charge Controller is a reliable and high-quality option for charging 12V batteries. It acts like a blocking diode, preventing energy flow from the batteries back to the panels. It is not suitable for charging two 12V batteries in series, as it is designed for a single 12V battery. The maximum voltage output of this unit is around 14.35 volts at temperatures between 0째F and 60째F. The compact and well-made design allows for easy installation and it is waterproof. Customers have praised its performance, durability, and user-friendly interface.
Customer Reviews & Ratings
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Pros
- Reliable and high-quality performance
- Acts like a blocking diode to prevent energy leaching
- Compact and well-made design
- User-friendly interface
- Waterproof
Cons
- Not suitable for charging two 12V batteries in series
Platform Trust & Buyer Confidence
MB
Maryam
Verified buyer
“The order arrived fast and in perfect condition”
2 June 2026 · via Trustpilot
T
trusttaker
Verified buyer
“I loved it. That was my second order, and I am already thinking of placing a third order.”
16-Jul-26 · via Trustpilot
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Haitham
Verified buyer
“Trusted merchant”
11 July 2026 · via Trustpilot
MA
Mohammad
Verified buyer
“Excellent quality and very fast delivery, I really appreciate your service, when you work good I will appreciate that, I am very satisfied , thank you”
13 June 2026 · via Trustpilot
LA
Lulwa
Verified buyer
“I like the package arrived safely”
17 June 2026 · via Trustpilot
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BHD 22
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Features & Benefits
- Series design for improved performance
- Rugged and waterproof design
- No need to de-rate, rated for 25% overcurrents
- Easy to install with outdoor rated connecting wires
- 100% solid state, epoxy encapsulated
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