Morningstar SSD-25RM SunSaver Duo 25A Dual Battery Charger with Meter (12V)


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Item code Brand name Model number Volts Amps
MORSS-Duo Morningstar Corp SSD-25RM 12V 25A

Morningstar Corporation

Morningstar Corporation
Sunsaver Duo
Solar Charge Controller

TWO BATTERY SOLAR CONTROLLER WITH REMOTE METER (But it works great with only one battery, too!)

Morningstar’s SunSaver Duo is an advanced PWM two battery controller for RV’s, caravans, boats and cottages. This product will charge two separate and isolated batteries at the same time, such as a "house" and an engine battery, based on user selectable priorities.

The SunSaver Duo employs Morningstar’s legendary SunSaver controller technology, whose long-term track record for high reliability and improved battery charging is well-recognized in the solar industry. This controller also includes a backlit remote meter which may be mounted in or on a wall, and displays digital and pictorial status information about the solar power system.

The SunSaver Duo is epoxy encapsulated for environmental protection, is user adjustable via DIP switch or connection to a personal computer, and has an optional remote temperature sensor.

It works great with just one battery, too!

If there is only one battery, the SunSave Duo sends up to all 25A to the single battery with no detrimental effects. The second battery can be added at a later time, or not at all. The meter shows dashes for battery 2 as it is not in use. At 25A with a remote meter, it is actually a really great value for a high current 12V digital controller with remote meter for single battery systems!

Standard Controller Features:

  • Two Battery Charging
    Solar charge current is shared between the two batteries
    based on a user selectable priority. When one battery is fully
    charged, all of the charge current flows to the other battery.
  • Provides Useful Information
    The remote meter and LED’s display system status data and
    any system errors. Custom icons and back lighting make the
    meter easy to read and understand.
  • Lower Cost
    Two battery charging eliminates the added cost of two
    separate solar charging systems and the need for isolation
    between the batteries.
  • Easy to Install
    The controller is installed near the batteries using the clearly
    labeled large wire terminals. The remote meter may be
    mounted in the wall or on the wall using the included frame.
    Also includes the meter wiring with RJ-11 connector.
  • Longer Battery Life
    Four stage series PWM pulse charging and temperature compensation increases the useful life of the batteries.
  • Extensive Electronic Protections
    The controller will not be damaged by wiring mistakes during installation. There are no fuses to replace, and the controller will automatically re-set after a wiring mistake.
  • Highly Reliable
    Epoxy encapsulation protects the controller against dust and high humidity. Efficient electronics and a conservative thermal design allow the controller to operate reliably at high temperatures. Five year warranty and estimated 15 year life.

Sunsave Duo in RV

Includes controller, meter and 10 m (33 ft.) of meter wire.


Morningstar Corporation

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