SunSaver Duo
The SunSaver Duo™ is an advanced PWM controller designed to intelligently charge two separate batteries from a single solar array. Ideal for smaller off-grid power systems, it allows user-selectable charging priorities while delivering reliable battery charging and long-term performance.
Built on Morningstar’s proven charging technology, the SunSaver Duo combines dependable operation with flexible configuration, optional remote monitoring, and durable environmental protection to maximize battery health and system reliability.
Specifications & Certifications
| Model | SSD-25 | SSD-25RM |
|---|---|---|
| Charge Rating | 25 amps | 25 amps |
| Max. PV Open Circuit Voltage (Voc) | 30 volts | 30 volts |
| Nominal Battery Voltage | 12V | 12V |
| Self Consumption | 6 to 10 mA | 6 to 15 mA |
| Battery Voltage Range | 1-15V | 1-15V |
| Voltage Accuracy | 1.0% | 1.0% |
| Operating Temperature Range | -40 C to +45C | -40 C to +45C |
| Warranty | 5 Years | 5 Years |
| Remote Meter included | No | Yes |
| CE and RoHS compliant | Yes | Yes |
| TAA compliant | Yes | Yes |
| Manufactured in a Certified ISO 9001 Facility | Yes | Yes |
Key Features
- Dual Battery Charging Capability
Solar charge current is shared between the two batteries based on a user selectable priority (house and vehicle for example). When one battery is fully charged, all of the charge current flows to the other battery. This eliminates the need for a second solar charging system and isolation between the batteries. - User Adjustable
Set parameters with on-board DIP switches or further customize with a PC using Morningstar MSView software.
- 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.