I am building a van with a 12V system and I already have a smart solar mppt 100/30 built in.
I can get it from a friend for good money
1x 330wp polycrystal 2x1m
Max. no-load voltage Voc = 45.71V
Max. short-circuit current Isc = 9.01A
Max. voltage at load 330W: Vmp = 38.45V
Max. Current at 330W: Imp = 8.59A
Then others told me to put it on the roof as much as possible. So I'm thinking maybe this one would get in there:
1x 545 wp monocrystal 2,3x 1x15m
Max. no-load voltage Voc = 49.4V
Max. short-circuit current Isc = 13.9A
Max. voltage at load 545W: Vmp = 41.2V
Max. Current at 545W: Imp = 13.2 A
they say they will never go full power on the flat roof of a car.
the question is? Is it necessary to go to such a panel at all? would it stand it 100/30?
does it make sense or just 330wp is enough?
may a better choice be two smaller ones?
sorry for my english. Jiri