This charge controller will not work with any solar panel. I originally had (4) generic 100w panels in parallel on this unit, but in the winter learned panels must be <25V open circuit, otherwise neither solar or alternator will be allowed to charge.
To charge from alternator at 50A you will need to disconnect the solar array, otherwise the alternator side will only provide 25A + available solar.
I used this to add lithium battery to an existing lead-acid setup, effectively creating a new, seprate battery bank that can still pull from the old battery bank, this let me use up the lead acid vs just discarding the old battery bank.
UPDATE 2024: Latest version of this product supports 50Voc panels (proof the ceiling was too low at 25v)