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Blue Solar MPPT 75/05

BlueSolar 75 VOC, 5 Amp MPPT solar panel charge controller for 12V and 24V battery systems including Lithium.


Maximum Power Point Tracking Charge Controller

Max PV Source Voltage(open circuit):75VDC

Max Input/Output Current:5 AMPS DC

Max PV power,12V 1a,b):70w

Max PV power,24V 1a,b):135w

Nominal Battery Voltages:12/24/Automatic

Operating ambient Temperature range:-30~60℃(Full rated output up to 40℃)

Dimensions X/Y/Z(mm):100/113/38.5



Untra-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 issufficient to recharge the battery to nearly the full 100%.From that point on wards 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 our website for details

Day/night timing and light dimming option

See the software section on our website for details


blue mppt


MPPT75/05 MPPT75/10 MPPT100/15
System voltage 12/24 V Auto Select
Maximum output current 5A 10A 15A
Maximum PV power,12V 1a,b) 70 W 135W 200WV
Maximum PV power, 24V 1a,b) 135 W 270W 400WV
Maximum PV open circuit voltage 75 V 100 V
Maximum efficiency 98  %
Self-consumption 10  mA
Charge voltage ‘absorption’ Default setting:14,4V/28.8V(adjustable)
Charge voltage ‘float’ Default setting:13,8 V/27,6V(adjustable)
Charge algorithm multi-stage adaptive
Temperature compensation -16   mV/°Cresp.-32mV/℃
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/28Vor Battery Life algorithm
Protection  Battery reverse polarity (fuse)/Output short circuit / Over temperature
Operating temperature  -30 to +60℃(full B14 output up to 40°C)
Humidity 95%,non-condensing
Data communication port                    VE.Direct
See the data communication white paper on our website
Colour Blue (RAL 5012)
Terminals(fine / single wire) 6mm     2/AWG10
Protection category IIP22 (connection area)
Weight 0.35 kg 0.5kg
Dimensions(X×Y×Z) 100×113×38.5 mm 101×114×47 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


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