question

ciripa avatar image
ciripa asked

MPPT smartsolar controller sizing

Hello,

my set-up in my caravan:

2 solar panels on the roof of my caravan each 100 watts and 2 Ion Lithium batteries each 100 A/H.

I an intending to buy the Victron SmartSolar MPPT 75/15 solar charge controller.

Do you think that might be enough for my set-up or should I go further to the Victron SmartSolar MPPT 100 | 20 solar charge controller?

MPPT Controllers
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8 Answers
Todd Wackford avatar image
Todd Wackford answered ·

What is the spec's of the panels? VOC, Imp, etc?


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ciripa avatar image
ciripa answered ·

Thank you. I'll find out the specs.

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ciripa avatar image
ciripa answered ·

@Todd Wackford Thank you I'll provide the specs.

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ciripa avatar image
ciripa answered ·

Hi Todd, please find the attached image to have the solar panels specs.190325_P3250048.JPG


190325-p3250048.jpg (72.9 KiB)
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ciripa avatar image
ciripa answered ·

@Todd Wackford

Sinola Solar Panel
Model SAMC 100 W
Standard Power: 100 W
Max Power Voltage (Vmp): 19.2 V
Max Power Current (Imp): 5.2 A
Open Circuit Voltage (Voc): 23.0 V
Short Circuit Current (Isc): 5.7 A
Max System Voltage: DC 1000 V
Size of Module: 1200/554/30 mm
At Standard Test Conditions: AM 1.5 1000 W/sqm 25°
www.sinola.cn

Anybody is invited to answer my question to be able to judge, whether can use the Victron Smart Solar charge Controller MPPT 75 | 15

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JohnC avatar image
JohnC answered ·

Hi Ciripa. All the planets would have to be aligned for 15A out of those panels to be reached. So there's no point buying a larger one. Wire your panels in series for best results. Happy camping..

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ciripa avatar image ciripa commented ·

@JohnC

Thank you very much :). I thought it might be the right solar charge controller for my setup. I was needing just a confirmation from outside people, like yourself.

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ciripa avatar image
ciripa answered ·

@JohnC

Thank you very much.

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Lasse avatar image
Lasse answered ·

You can find the right MPPT Solar Charger with the online sizing calculator https://mppt.victronenergy.com/

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