Description
The Morningstar SunGuard SG-4 is a compact, high-quality 12V 4.5A PWM solar charge controller designed to provide efficient, reliable, and maintenance-free battery charging. As a single-module controller, the SunGuard is perfect for small solar energy systems, including remote telemetry, lighting, and small-scale solar applications.
Built using Morningstar’s advanced PWM charging technology, the SunGuard enhances battery life and ensures peak performance with minimal power consumption. Its robust encapsulated design makes it highly durable and resistant to harsh environments, making it an excellent choice for outdoor applications.
Key Features
- Reliable PWM Charging: Uses Pulse Width Modulation (PWM) technology to improve battery performance and extend lifespan.
- Low Power Consumption: Ultra-low self-consumption of only 6mA, ensuring more power is available for the battery.
- Fully Encapsulated Design: Epoxy-sealed electronics provide protection against dust, moisture, and extreme temperatures.
- Automatic Temperature Compensation: Adjusts charging voltage based on temperature fluctuations to optimize battery health.
- Overcurrent Protection: Handles up to 25% overcurrent surges without requiring a reduction in performance.
- Easy Installation: Comes with pre-wired terminals, making it simple to connect to your solar panel and battery system.
- Maintenance-Free Operation: No moving parts and a rugged design mean you can install it and forget it.
Applications
- Remote Telemetry & Communications
- Solar-Powered Lighting
- Off-Grid Battery Charging
- Marine & RV Solar Systems
- Solar Security Cameras
- Small Off-Grid Solar Projects
Technical Specifications
| Specification | Details |
|---|---|
| Model Number/ID | SG-4 |
| Charge Controller Type | PWM (Pulse Width Modulation) |
| Nominal System Voltage | 12V DC |
| Rated Charging Current | 4.5 Amps |
| Max Short-Term Current (5 min.) | 5.5 Amps |
| Maximum Solar Input Voltage | 30V DC |
| Regulation Voltage | 14.1V DC |
| Self-Consumption | 6mA |
| Load Control | No (charge controller only) |
| Temperature Compensation | -28mV/°C |
| Operating Temperature Range | -40°C to +60°C (-40°F to 140°F) |
| Humidity Tolerance | 100% non-condensing |
| Enclosure | Fully epoxy-encapsulated |
| Mounting | Surface Mountable |
| Wire Size | 16 AWG (pre-wired) |
| Weight | 0.1 kg (3.5 oz) |
| Dimensions (L x W x H) | 6.4 x 5.1 x 3.8 cm (2.5 x 2 x 1.5 in) |
| Certifications | CE, RoHS Compliant |
| Warranty | 5 Years |
Why Choose the Morningstar SunGuard SG-4?
- Superior Durability: Epoxy-encapsulated construction protects internal electronics from dust, moisture, and physical damage.
- Highly Efficient Charging: Advanced PWM technology ensures your battery charges optimally, extending its lifespan.
- Minimal Maintenance Required: No moving parts and a low self-consumption design mean long-term, trouble-free performance.
- Trusted by Professionals: Used in remote solar applications worldwide, proven reliability in extreme conditions.
- Easy to Install and Use: Pre-wired leads make connections simple—just plug and play.
Specs & Info