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| Model | SL-20L-12 |
| Charge Rating | 20 amps |
| Load Rating | 20 amps |
| System Voltage | 12V |
| Load Disconnect | 11.7V |
| LVD Reconnect | 12.8V |
| Lighting Control Options | 10 programmable settings |
| Timer Accuracy | Within 2 seconds |
| Self-Consumption | 8 mA |
| Temperature Compensation | -27 mV/°C |
| Operating Temperature | -40°C to +60°C |
| Wire Size | #10 AWG (5.2 mm²) |
| Weight | 9 oz (0.26 kg) |
| Warranty Period | 5 Years |
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Morningstar SunLight Charge Controller 12 volts 20 Amp
SKU SL-20L-12
SunLight SL-20L-12V Lighting Controller
The SunLight SL-20L-12 delivers maximum power capacity in the 12V SunLight platform, combining the proven SunSaver foundation with microcontroller-managed automatic lighting control functions for high-demand solar lighting applications.
- Maximum 12V Power: 20-amp charge and load capacity enables large-scale 12V solar lighting installations with multiple high-wattage fixtures and extended runtime capability.
- 10 Programmable Lighting Options: User adjustable for 2 to 10 hours ON or all night with unique ON/OFF/ON settings that conserve energy and provide pre-sunrise lighting.
- Microcontroller Precision: Timer accuracy within 2 seconds with automatic day/night detection using the PV array for reliable lighting control.
- Integrated Load Management: Automatic load disconnect at 11.7V and reconnect at 12.8V prevents battery damage while managing high-capacity lighting loads.
- Easy Setup & Testing: Test button confirms correct installation by turning lights on during daylight with LED indicator showing selected lighting option.
- Rugged Design: Anodized aluminum enclosure with epoxy encapsulation and marine-rated terminals for harsh environmental conditions.
SunLight Lighting Control Options
SunLight SL-20L-12 Certifications
The SL-20L-12 meets international quality and safety standards for global deployment in solar lighting applications requiring reliable automated control.
- CE Marking - European Conformity for EU market access
- RoHS Compliant - Restriction of hazardous substances
- REACH Compliant - European chemical safety regulation
- ISO 9001 - Manufactured in certified quality facility
Contact Us toll-free: (877) 297-0014
Read more about Morningstar SunLight charge controllers.
Morningstar SunLight Solar Lighting Controller Review
The SunLight SL-20L-12 combines maximum 20-amp power capacity with intelligent microcontroller-managed lighting functions for the most demanding solar lighting installations. Building on the industry-standard SunSaver platform that has deployed over 1.5 million units worldwide, the SL-20L-12 delivers sophisticated lighting control with 10 programmable options and 2-second timer accuracy for large-scale street lighting, commercial parking areas, and industrial installations. The high-capacity 20-amp capability supports multiple high-wattage fixtures while the unique ON/OFF/ON energy conservation settings and automatic day/night detection make it ideal for municipal lighting projects, large commercial facilities, and industrial applications where maximum 12V power and reliable automated lighting control are essential.
Morningstar SunLight Solar Lighting Controller Applications
Lighting
Residential
Surveillance & Security
Traffic & Signaling
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