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1 have 2 100/30 solar controller they are of . how you turn them on
my 2 solar controller have voltage from the solar panels. but are turn of . i have a multyplus 2 .and a cerbo gx . and a smart shunt . 2 SOK batteries . at 280 amp each . does matter if it is in the morning . or in the afternoons in full sun . they have voltage in . but the app on cerbo gx or iphone app said 0 watt ? . do i need to buy a another controller brand ?