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Morningstar SunSaver Duo SSD-25RM PWM Charge Controller

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  • SunSaver Duo SSD-25RM
  • SunSaver SSD-25RM
  • SSD-25RM
Morningstar Corporation
MSRP: $188.00
$150.00 (You save $38.00)
SKU: ALG-020-01250
Condition: New
Weight: 0.87 LBS
Shipping: Free Shipping

 Product Description

Morningstar SunSaver Duo 25A PWM Charge Controller - SSD-25RM

Morningstar, SunSaver Duo, PWM Charge Controller, 25A, 12VDC, #6 AWG, Remote Meter, SSD-25RM

Morningstar’s SunSaver Duo SSD-25RM is an advanced PWM two battery charge 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.


  • Two Battery Charging & Longer Battery Life - 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. Four stage series PWM pulse charging and temperature compensation increases the useful life of the batteries.
  • Easy to Install & Lower Cost - 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. Two battery charging eliminates the added cost of two separate solar charging systems and the need for isolation between the batteries.
  • Highly Reliable & Extensive Electronic Protections - 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 fifteen year life span. The controller will not be damaged from wiring mistakes during installation. There are no fuses to replace, and the controller will automatically re-set after a wiring mistake.


General Information  
Manufacturer: Morningstar
Product Line:
SunSaver Duo
Model ID:
Certifications and Safety Ratings: ce.gif


Mechanical Data
Technology: Pulse Width Modulation (PWM)
Controller Dimensions:
6.70 x 2.20 x 1.60 inches (SSD-25RM Dimensions)
Meter Dimensions: 3.80 x 3.80 x 1.20 inches (Remote Meter Dimensions)
Weight: Controller: 0.57 lbs, Meter: 0.30 lbs
Casing: Anodized Aluminum (Black)
Remote Meter Display: Digital Display with LED's
Battery Select:
4 Stage: Bulk, PWM, Float & Equalize (Use on Flooded Only)
Largest Wire Size: #6 AWG (16 mm²)
Meter Wire Size: 10 m / 33 ft
Encapsulation: Epoxy Encapsulated
Terminals: Corrosion Resistant
Meter Tropicalization: Conformal Coated Printed Circuit Board


Electrical Data
System Voltage: 12 Volts
Rated Solar Input:
25 Amps
Rated Load Output: N/A
Minimum Battery Voltage: 1 Volt
Maximum Battery Voltage: 15 Volts
Maximum Solar Voltage: 30 Volts
Self-Consumption: Controller: 6-10 Milliamps, Meter: 6-15 Milliamps
Operating Controller Temperature: -40°C to +45°C
Operating Meter Temperature: -20°C to +60°C
Battery Charging -
Regulation Voltage:
Sealed: 14.10V, Flooded: 14.40V
Float Voltage: 13.70 Volts
Equalization Voltage: 14.80 Volts
Temperature Compensation: –30 Millivolts per °C (25°C Reference)
Battery Charging Priority:
1) 90% / 10% 2) 50% / 50% (Customize via PC Connection)


Document Type
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Specifications Specifications
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Manual Users Manual
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Electrical Diagram
Electrical Diagram
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo Testing Instructions Testing Instructions
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Remote Meter Manual
Remote Meter Manual
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Remote Meter Map
Remote Meter Map
Warranty 5 Year Material & Workmanship Warranty
logo-adobe-pdf-2.jpgMorningstar SunSaver Duo SSD-25RM Warranty Warranty


Terms & Conditions
Shipping: Shipping Policy
Returns: Returns Policy
Payments: We accept: Visa, MasterCard, Discover, and American Express. We also accept checks, direct deposit and wire transfers for large orders.

Morningstar Corporation - Morningstar SunSaver Duo SSD-25RM PWM Charge Controller
Price: 150
Condition: new
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 Warranty Information

Warranty: 5 Year Material & Workmanship Warranty

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