... Double load output Solar system controller SR-2L Double load output Solar system controller SR-2LDouble load output Solar system controller SR-2L1.Individual ... components. ModelSR-L seriesrated charging current5A ,10A ,15A ,20A (Optional)Rated discharging current5A ,10A ,15A ,20A (Optional)Working Voltage12V ; ... of controllerAnti- connection-reverse protection for solar battery and storage battery.