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Morningstar 25A SunSaver Duo

Out of stock

Two Battery Solar Controller with Remote Meter
Suits 12v Systems

Features / Description

Morningstars SunSaver Duo is an advanced Pulse Width Modulated two battery controller for RVs, 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 Morningstars 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.


  • 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 LEDs 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.


General Specifications

Manufacturer Morningstar

Mechanical Specifications

Weight (Kg) 0.4000
Dimensions No

Electrical Specifications

Max Input Voltage N/A
Max Output Current 25A
Supported Battery Voltages N/A
Efficiency N/A