It’s just the common parlance. I wouldn’t have done this were it a more technical setting, but this is a shitpost community - so I’ll just have to beg forgiveness for my imprecision. Fortunately, should anyone go to test this by fondling their car’s terminals, no harm will befall them due to my lack of strict accuracy in the description here (though they might get rebuffed by their car if it’s not in the mood).