Why would it need a pig tail connector? You cant jump start from those & that it its primary function. I agree The wire gauge may look small but is made to work. Small enough for the unit & pouch to fit in a glovebox.
I should add i already have a booster also fyi it is a Stanley
walmart
i like it but is a bit large & has a big button is lil too ez to push when packing away & it will discharge so i tape a fender washer over it. (Seen in pic). But what i really like about the unit is its built in safety so say if my sister needs it i can just drop off with her , something i cant do with jumper-cables.