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scraggs avatar image
scraggs asked

MPPT calculator possible error

Not sure if there is something a miss with the calculator but I have just tried putting in some panels that a few months ago brought up the 250/100 and now it doesn't, if I put 4 in series and 4 in parallel it will give me the 250/85 but if I add 1 into the series or parallel it now comes up with no suggestion where it used to suggest the 250/100.
Panels are 390 watt.
Voc 45.33
Lsc 10.92
Vmpp 37.72
Lmpp 10.34


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kevgermany avatar image kevgermany ♦♦ commented ·
Is this the online or Excel calculator?

Are you using the same temperature low point as before?


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scraggs avatar image scraggs kevgermany ♦♦ commented ·

Hi @kevgermany

Yes this is the online version (I have never been very successful getting the Excel version to work in Openoffice) and using the same low point.

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kevgermany avatar image kevgermany ♦♦ scraggs commented ·

Excel version worked for me in Libre Office. But that won't help.

I'll report it for you. But as it's festive season, might take a while.

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scraggs avatar image scraggs kevgermany ♦♦ commented ·
@kevgermany Many thanks
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