As good as new just ran it briefly, the battery pack i had at the time could not handle the current the controller was drawing.
I dont know much about these controllers but i bet there is a thread somewhere here on es about sunwin controllers.
What i know,
it got the LVC switch for 48/60/72V batteries
rated power 1500W but probably more
what i can recall, its dual mode sensored/sensorless
Price $40 + shipping