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vasily-vishnevskiy avatar image
vasily-vishnevskiy asked

Mppt choice question

Hello,

I have 4s6p lifepo4 battery pack - 12v, has bms(4s 12v 45A)

I have solar panel 42w 24v - nominal current 1.25A, nominal voltage 33v max design voltage 65v

I need advise on what mppt will be the best to choose.

Please advise.

Thank you!

MPPT Controllers
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dazey77 avatar image
dazey77 answered ·

The smallest will work for you. Smartsolar 75/10 if you want bluetooth or bluesolar 75/10 if you don't care about monitoring. I have a portable system with two 20w panels that is basically the same setup you have. I went smartsolar 75/15 because its the same weight as the 75/10 and I already have a 75/15 and the portable one can also serve as a backup for my main unit.

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vasily-vishnevskiy avatar image vasily-vishnevskiy commented ·

Hey man, Thank you! I got the 75/10 with BT. I am sure i will use it for something bigger when the project will grow up.

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Jan Zmrhala avatar image Jan Zmrhala vasily-vishnevskiy commented ·

Hi, you can check it out with the victron MPPT setup file:

https://www.victronenergy.com/upload/software/VE-MPPT-Calc-3_6.xlsm


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