question

daniele-debernardi avatar image
daniele-debernardi asked

Setting my mppt 150 35 for Batteria LiFePO4 100Ah 24V SolarFam SX25.6

I have problem with my system from 29/10 ... When I update firmware


I don't remember my prev sets but I don't think upgrade erase them...

I have 4 280w panel 2 string in parallel futura sun 24v

These my screenshots now


screenshot-20211106-175429.jpg



screenshot-20211106-175927.jpg

Thx all for any help

battery chargingmppt charging
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3 Answers
Paul B avatar image
Paul B answered ·

these settings look ok, but it would be better to select the lithium presets in the mppt unit, or set them to the battery manufacturers requirements.

normally a upgrade does not change the prior settings

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daniele-debernardi avatar image
daniele-debernardi answered ·

Ok now I set lithium presets... I hope it will be better


Another ask is why after 29/10 i cannot charge battery fullly?


Sure sun is down now, there is a possibility there is problem on PV ? This shot of now from charging victron



screenshot-20211107-082713.jpg



Usually during night loss 5/10% of battery from unique load by refrigerator... But during sunny day in this season will be enough to charge 15/30% ..



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daniele-debernardi avatar image
daniele-debernardi answered ·

Hy just before close thread... Thx all 4 read and answer... Now the problem seam be closed... Maybe mppt settings or maybe dirt on PV... I clean all just yesterday and now I have 3 or 4 A just enough to load my battery


screenshot-20211107-140400-solmax.jpg



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