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MPPT Charge Controllers

These are needed for use with larger 60 cell PV panels in order to match the PV output voltage with battery voltage.

  • They allow PV to operate at its maximum power point voltage
  • Controller drops this down to battery voltage
  • Current is boosted by doing this
  • So panels deliver full power to battery

They allow a PV array to deliver up to 30% more power to a battery than it would if it were connected directly to the battery.
The current from PV modules varies with sunlight levels but is fairly constant over a wide range of voltages. This means they can operate at higher voltages than the voltage of the battery bank which they are charging.

Advantages

  • Panel voltage doesn’t need to match battery voltage
  • Can use high voltage string configurations
  • Smaller cable can be used
  • PV can be sited further from battery
  • Better for larger systems (>200Wp)
  • 60 cell panels are better value than 36 cell 12V panels so the extra power delivered can justify extra cost of the controller even for 12V systems
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18 products

  • Victron SmartSolar Charge Controller MPPT 75/10 75/15 & 100/20

    Victron SmartSolar Charge Controller MPPT 75/10 75/15 & 100/20

    3 models available
    From £49.72

    These Victron SmartSolar Charge Controllers support a PV input with a maximum open circuit voltage of either 75V or 100V and have a maximum output of up to 20A. They work with and will automatically recognise 12V, 24V and 48V battery systems (48V with SmartSolar 100/20-48 only).

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  • Victron SmartSolar MPPT RS

    Victron SmartSolar MPPT RS

    2 models available
    From £984.36

    The MPPT RS SmartSolar is a 48V Solar charge controller with up to 450VDC PV input and either 100A or 200A output. It is used in on-grid and off-grid solar applications where maximum battery charging power is required.

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*see manufacturer's documentation for further information