Victron Blue Solar MPPT 75/15 (12/24V) Regulator

Product Code: Victron 75/15 MPPT
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Ultra-fast Maximum Power Point Tracking (MPPT)

Especially in case of a clouded sky, when light intensity is changing continuously, an ultra-fast MPPT

controller will improve energy harvest by up to 30% compared to PWM charge controllers and by up to 10% compared to slower MPPT controllers.


Load output

Over-discharge of the battery can be prevented by connecting all loads to the load output. The load output will disconnect the load when the battery has been discharged to a pre-set voltage. Alternatively, an intelligent battery management algorithm can be chosen: see Battery Life.

The load output is short circuit proof. Some loads (especially inverters) can best be connected directly to the battery, and the inverter remote control connected to the load output. A special interface cable may be needed, please see the manual.


Battery Life: intelligent battery management

When a solar charge controller is not able to recharge the battery to its full capacity within one day, the result is often that the battery will continually be cycled between a ‘partially charged’ state and the ‘end of discharge’ state. This mode of operation (no regular full recharge) will destroy a lead-acid battery within weeks or months. The Battery Life algorithm will monitor the state of charge of the battery and, if needed, day by day slightly increase the load disconnect level (i.e. disconnect the load earlier) until the harvested solar energy is sufficient to recharge the battery to nearly the full 100%. From that point onwards the load disconnect level will be modulated so that a nearly 100% recharge is achieved about once every week.


Programmable battery charge algorithm

See the software section on Victron’s website for details


Day/night timing and light dimming option

See the software section on Victron’s website for details


Programming, real-time data and history display options

- Modern Apple and Android smartphones, tablets, macbooks and other devices: see the VE.Direct Bluetooth Smart dongle and the MPPT app discovery sheet for screenshots.

- ColorControl panel


BlueSolar Charge Controller                      MPPT 75/15

Battery voltage                                            12/24V Auto Select

Rated charge current                                  15A

Maximum PV power, 12V 1a,b)                 220W

Maximum PV power, 24V 1a,b)                 440W

Max. PV short circuit current 2)                20A

Automatic load disconnect                        Yes, maximum load 15A

Maximum PV open circuit voltage            75V

Peak efficiency                                             98%

Self-consumption                                        10 mA

Charge voltage 'absorption'                       14,4V / 28,8V (adjustable)

Charge voltage 'float'                                  13,8V / 27,6V (adjustable)

Charge algorithm                                         multi-stage adaptive

Temperature compensation                      -16 mV / °C resp. -32 mV / °C

Continuous/peak load current                  15A / 50A

Low voltage load disconnect                     11,1V / 22,2V or 11,8V / 23,6V or Battery Life algorithm

Low voltage load reconnect                       13,1V / 26,2V or 14V / 28V or Battery Life algorithm

Protection                                                     Battery reverse polarity (fuse)

                                                                        Output short circuit / Over temperature

Operating temperature                              -30 to +60°C (full rated output up to 40°C)

Humidity                                                        95%, non-condensing

Data communication port                          VE.Direct



Colour                                            Blue (RAL 5012)

Power terminals                            6 mm² / AWG10

Protection category                      IP43 (electronic components), IP22 (connection area)

Weight                                             0,5 kg

Dimensions (h x w x d)                 100 x 113 x 40 mm


Safety                                              EN/IEC 62109

1a) If more PV power is connected, the controller will limit input power to the stated maximum.

1b) PV voltage must exceed Vbat + 5V for the controller to start. Thereafter minimum PV voltage is Vbat + 1V

2) A PV array with a higher short circuit current may damage the controller.

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