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Morningstar SunSaver Charge Controller

SunSaver™ Models

Morningstar SunSaver Charge Controllers

The Industry Standard for Off-Grid Solar System Battery Charging

Morningstar SunSaver & Sunlight Charge Controllers represent the industry standard for reliable solar battery charging in demanding off-grid applications worldwide. With over 1.5 million SunSaver controllers deployed across 90 countries since 1996, these proven PWM charge controllers deliver exceptional performance in mission-critical installations from oil and gas operations to residential solar systems.

Morningstar Sunlight Lighting Controller

Sunlight™ Models

Morningstar SunSaver Charge Controller Models & Specifications

SunSaver Model SS-6-12V SS-6L-12V SS-10-12V SS-10L-12V SS-10L-24V SS-20L-12V SS-20L-24V
Charge Rating 6 amps 6 amps 10 amps 10 amps 10 amps 20 amps 20 amps
Max. PV Open Circuit Voltage (Voc) 30 volts 30 volts 30 volts 30 volts 60 volts 30 volts 60 volts
Nominal Battery Voltage 12V 12V 12V 12V 24V 12V 24V
Minimum Battery Voltage 6V* 6V* 6V* 6V* 6V* 6V* 6V*
Load Control No Yes No Yes Yes Yes Yes
Voltage Accuracy +/- 25mV +/- 25mV +/- 25mV +/- 25mV +/- 48mV +/- 25mV +/- 48mV
Operating Temperature Range -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C
Warranty 5 Years 5 Years 5 Years 5 Years 5 Years 5 Years 5 Years
CE and RoHS Compliant Yes Yes Yes Yes Yes Yes Yes
TAA Compliant Yes Yes Yes Yes Yes Yes Yes
Hazardous Locations: Class 1, Division 2, Groups A-D Yes Yes Yes Yes Yes Yes Yes
UL-1741 and Canadian CSA Listed Yes Yes Yes Yes Yes Yes Yes
FCC Class B Part 15 Compliant Yes Yes Yes Yes Yes Yes Yes
ISO 9001 Certified Facility Yes Yes Yes Yes Yes Yes Yes

*In periods following excessive battery drain, provided the controller is not power cycled, the controller can self-recover from a battery voltage of 1V and provide intermittent charging operation up to 6V at which normal operation will resume.

Morningstar SunLight Charge Controller Models & Specifications

Model SL-10L-12V SL-10L-24V SL-20L-12V SL-20L-24V
Charge Rating 10 amps 10 amps 20 amps 20 amps
Max. PV Open Circuit Voltage (Voc) 30 volts 60 volts 30 volts 60 volts
Nominal Battery Voltage 12V 24V 12V 24V
Minimum Battery Voltage 6V 6V 6V 6V
Voltage Accuracy +/- 25mV +/- 48mV +/- 25mV +/- 48mV
Operating Temperature Range -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C
Warranty 5 Years 5 Years 5 Years 5 Years
CE and RoHS Compliant Yes Yes Yes Yes
TAA Compliant Yes Yes Yes Yes
Manufactured in a Certified ISO 9001 Facility Yes Yes Yes Yes

MorningStar SunSaver Charge Controller Review

The Morningstar SunSaver series has earned its reputation as the industry standard through exceptional real-world performance and reliability. With over 1.5 million units deployed across 90 countries since 1996, these controllers maintain an impressive failure rate of less than 0.1% in demanding applications ranging from remote oil and gas installations to residential off-grid systems. Professional installers consistently choose SunSaver controllers for mission-critical applications where failure simply isn't an option, from mining operations in extreme climates to telecommunications infrastructure in remote locations.

The solid-state power MOSFET design eliminates mechanical relay failures while delivering precise 4-stage PWM charging with temperature compensation to extend battery life. The extruded aluminum enclosure with integrated heat sink management, combined with epoxy encapsulation and marine-rated terminals, enables reliable operation from -40°C to +60°C in harsh field conditions. Factory pre-configuration eliminates installation complexity, while comprehensive electronic protections against overload, short-circuit, reverse polarity, and transient surges protect both the controller and connected equipment.

Introductory Image

Proven Reliability

Over 1.5 million controllers sold worldwide with less than 0.1% failure rate. Trusted in mission-critical applications across 90 countries since 1996.

4-Stage PWM Charging

Advanced pulse width modulation with bulk, absorption, float, and equalize stages extends battery life through precise temperature-compensated charging.

Comprehensive Protection

Full electronic protections against overload, short-circuit, reverse polarity, high temperature, lightning, and transient surges on all connections.

Extreme Temperature Range

Operates reliably from -40°C to +60°C with marine-rated terminals and tropicalized design for harsh field conditions.

Hazardous Location Certified

UL/CSA Class 1 Division 2 and ATEX/IECEx Zone 2 approvals for safe operation in oil, gas, and mining environments worldwide.

Easy Installation

Factory pre-configuration eliminates setup requirements. Electronic protections prevent damage from wiring mistakes during installation.

Intelligent Lighting Control

SunLight models feature 10 programmable lighting options with microcontroller precision for solar lighting applications.

Solid-State Design

100% solid-state power MOSFET technology with no mechanical relays ensures long-term reliability and silent operation.

SunSaver Solar Charge Controllers Rated for Hazardous Locations

Learn more about the HazLoc ratings and internal and external components of Morningstar’s SunSaver Solar Charge Controllers

Morningstar SunSaver Charge Controller Applications

Agricultural

Automation

Environmental

Lighting

Mining

Oil and Gas

Railroad

Residential

Rural Power

RV & Marine

Security

Telecom

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