I have 3 x 175w Victron mono crystal panels fitted in series, one of which needs replacing. I have just gone to fit the replacement and realised I have ordered a polycrystal panel by mistake, if i fit it will it cause any problems? Thanks in advance.
Dave Green
Itls the voc and isc the same? If so then it’s ok
The poly panel gives voc = 21.9 isc = 10.24
The mono panel is voc = 23.7 isc = 9.89
Does this mean they are incompatible?
Close enough not to be an issue really. There are the sticklers and other, sometimes must needs.
Are they in parallel or series? One controller or a few?
They are in series with one mppt, I don’t mind a drop in performance so long as they are safe together.
Many thanks
Didn’t preas post 
They will be ok.
Thanks again for your help