About The HRDi Charge Controller


The HRDi Charge Controller is the latest wind and solar regulator from Marlec. The HRDi has evolved from and improved on the successful HRDX controller. It provides Charge Control and Power Splitting for off-grid system with two independent batteries, such as the cranking battery and leisure battery on a boat. The contemporary design meets the needs of increasing power demands and features a useful digital display that shows the amount of generated free power, along with the battery state of charge. It is designed for use with the Rutland 504, 914i or FM910-4 Windchargers and up to 160W of solar panels.

Part No: HRDi-REG

The HRDi features:

  • Clear alpha-numeric digital LCD screen with user display options
  • Connectable to two independent battery banks
  • Priority charging of the lowest battery
  • Push button activated and timer controlled back light
  • Auto configuration to 12 or 24 V supply
  • Latest micro controller based system shuts wind charger down when batteries are full
  • Wall mounted modern moulded structure with easy access connection ports
  • Manual turbine & solar shutdown switch
  • Bulk & float charging stages for best battery performance
  • Temperature compensation to optimise charging in all conditions
    • Using internal sensor or external sensor also supplied
  • Accepts up to 6 mm² cable (SWG 11 or AWG 9)
  • Optional Remote Display can be added via dedicated port
  • Dims: 193 x 127 x 40mm. Weight 0.42kg

HRDi Installation Notes: 1. Solar panels must be fitted with diodes 2. Batteries must be connected first for auto voltage detection and setting 3. Care should be taken when connecting the HRDi, as with all electrical devices, reverse polarity connection will cause damage to the HRDi
Upgrading your turbine? If you currently have an HRDi controller, it should be a Rev 2 model to be compatible with the latest turbine. Check the label on the reverse of the device.

HRDi Remote Display

View the display information of the HRDi controller at a more convenient location such as the instrument panel or the cabin of your boat.

  • Recess Panel Mount for a flush finish on your consol or surface mount
  • Reprogrammable features
  • 3m connecting cable supplied
  • Can be used to stall Windcharger for your convenience


  • Surface mount : 125 x 75 x 50mm  Weight : 203g
  • Recess Mount : 125 x 75 x 9mm  Weight :132g
  • Recess Mount Cut Out : 100 x 62


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