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12V dual solar charge controller 14A escpecially for caravans and boats. Of course it's also suitable for other autarkic solar systems. Charges on-board and starter battery.

For solar modules with:
max. 220Wp module output
max. 14A module current
max. 28V module voltage


  • Main output (1): automatic charge and load preservation of the main supply battery (on-board battery)
  • Second output (2): current and voltage-reduced to recharge and preserve starter batteries and keep them operational
  • stepless regulation: full battery through instant recharge after consumption
  • Automatic charge program for Gel, acid/wet, AGM and lithium batteries
  • Very low consumption
  • Connectable to a battery temperature sensor
  • Displays: 'full', '>80%', 'charging', 'stand-by' and 'undervoltage'
  • Smooth battery charging - no overload 
  • maintenance-free

Through intelligent micro-processor controlling the batteries are charged optimally with IU1oU2 curves.

Bedienungsanleitung_SR-220-Duo-Digital.pdf Download
Ambient temperature: -20°C - +45°C
Battery type adjustable: Acid, Gel, AGM, LiFePO4
Battery voltage: 12 V
Charging characteristic: IU1oU2
Charging options: 1 supply battery
Charging timer: 3-fold
Charging voltage: max. 15V
Connection options: External temperature sensor
Dimensions: 131mm x 40mm x 77mm
Manufacturer: Votronic
Number of charging outputs: 2
On-board power supply filter: yes
Own consumption in standby: 4mA
Pre-charge current: max. 7.0A (deepest discharged battery:
Product Type: Charge controller
Protective functions: 54037,54179,54042,54828,54827,54055
Reset voltage: 12,7V
Scope of application: indoor area
Solar charging current living area battery: yes
Solar module - power (max.): 220Wp
Solar module current (max.): 14A
Solar module voltage (max.): 28 V/DC
System voltage: 12V DC
Weight: 155g
max. charging current: Battery1: 9.0A Battery2: 0.8A|14A
max. load current: 14A Reviews with
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