Truma SDC12 & SDC25 Solar Dual Battery Charge Controller Operating & Installation Instructions

Download the Truma SDC12 & SDC25 Solar Dual Battery Charge Controller Operating & Installation Instructions, covering the use, setup, charging operation and installation of the Truma SDC12 and SDC25 MPPT solar charge controllers. The manual identifies the product as the Solar Dual Battery Charger Controller SDC12 & SDC25.

This 29-page PDF manual contains both operating and installation instructions, making it a useful replacement for caravan and motorhome owners who have lost the original Truma SDC manual, purchased a vehicle with the controller already installed, or need guidance on its settings, connections and operation. The document contains English instructions followed by Swedish instructions.

The SDC12 and SDC25 are MPPT (Maximum Power Point Tracking) solar charge controllers designed to manage charging from solar panels to 12V batteries. The controller supports separate main and starter battery connections and provides selectable charging for different battery technologies.

What's covered:

• Safety instructions and intended use
• Battery care and correct usage
• Controller connections, terminals and device elements
• MPPT solar charging operation
• Main and starter battery charging
• Boost and float charging phases
• Partially discharged batteries
• Overvoltage protection and charging voltage limits
• Battery type selection and DIP switch settings
• Charging parameters for GEL, lead acid, AGM and LiFePO4 batteries
• Charging chart and charging process
• LED status indicators and troubleshooting
• Maintenance
• SDC12 and SDC25 technical specifications
• Wiring diagram
• Installation safety instructions
• Installation and mounting
• Cable sizes, fuses and electrical connections
• Correct connection sequence
• Optional temperature sensor connection
• Optional LCD meter connection
• Commissioning

Model compatibility:

This manual specifically covers:

• Truma SDC12
• Truma SDC25

Both are 12V solar dual battery charge controllers, but their charging capacities differ. The SDC12 supports a recommended/maximum solar panel capacity of 50–165 Wp and charging current up to 12A, while the SDC25 supports 50–350 Wp and charging current up to 25A. Both support a maximum solar panel open-circuit voltage of 50V.

The manual also provides the correct charging parameters for GEL, lead acid, AGM and LiFePO4 battery types, including boost and float charging voltages.

The wiring diagram shows how the controller connects to the solar panel, main battery and optional starter battery, temperature sensor and LCD meter. It also specifies a maximum total panel capacity of 165W for the SDC12 and 350W for the SDC25.

Ideal if you're searching for a Truma SDC12 manual, Truma SDC25 instructions, replacement Truma solar charge controller user guide, wiring information or the original operating and installation instructions for an SDC12 or SDC25 fitted to a caravan or motorhome.

Please note: This is a downloadable replacement manual in PDF format, not the physical Truma solar charge controller.