I am very impressed with this charger. Makes a nice 3 stage charge ending in a safe floating state. DIP switches provide different charging options for different battery types. Haven't found anything comparable for the price. The output current is actually 75A (unlike some chargers that claim a higher maximum charge rate than usual). One possible minus point: the maximum output current is knob-adjustable, but there's no calibration for it, so it's tricky. to find out which maximum charge current setting differs from the highest setting of 75A.