003266 – Charge Controller, 12V, PWM, LVD, SSD-25


Morningstar SunSaver Duo SSD-25

Product Documents

SKU: 003266 Category: Tag:


MorningStar SunSaver Duo SSD-25 Charge Controllers

Morningstar SunSaver Duo ™ is an advanced PWM two battery controller for RVs, caravans, boats and cottages. Designed for 25 amps at 12 volts DC, at the same time calculate this product of two separate batteries and isolated as a “house” and an engine battery, based on user selectable priorities. This SSD-25 also includes a backlit remote meter which may be mounted in or on a wall, and displays digital image and status information about the solar power system.


5 years

model numbers

SSD-25RM, SSD-25

Key Features and Benefits

  • Two battery charging
  • offers more system information
  • Lower cost
  • Easy installation
  • Longer battery life
  • Extensive Electronic Protections
  • Highly Reliable
  • estimated 15-year life


• Rated Solar Input 25 amps
• Rated Load Output Not applicable
• Battery Voltage 12 volts
• Min. Battery Voltage 1 volt
• Max. Battery Voltage 15 volts
• Max. Solar Voltage 30 volts
• Self Consumption
Controller 6 to 10 milliamps
Remote meter 6 to 15 milliamps


• Operating Ambient Temperature
Controller –40°C to +45°C / –40°F to +113°F
Meter –20°C to +60°C / –4°F to +140°F
• Humidity 100% non-condensing
• Tropicalization
Controller Epoxy encapsulation
Anodized aluminum case
Corrosion resistant terminals
Meter Conformal coated printed circuit board


The TriStar charge controller’s high voltage capability and flexible design enable several application scenarios including:

  • Oil & Gas
  • Remote Monitoring
  • Telecom
  • Security
  • Water & Wastewater
  • Traffic
  • Much More!

Morningstar Corporation is a world-leading manufacturer and supplier of solar charge controllers & inverters. Since our inception in 1993, over three million Morningstar units have been installed in over 112 countries around the world. Our controllers & inverters have set new standards in performance, quality, reliability and innovative features, and global solar markets have consistently recognized Morningstar’s products as the industry’s best overall customer value.

Our manufacturing is conducted in a fully automated world-class ISO 9001 facility, and our quality control includes 100% functional testing on every product, using the latest computerized test equipment and processes. For over 20 years, Morningstar has not changed its ownership, management or strategy, helping to build trusted, long term relationships among its employees, customers and suppliers.

Looking for more technical information on solar charge controllers? View our Tech-Note on different types of charge controllers!