Can You Charge a Car Battery Through the Cigarette Lighter: Truth Vs. Myth

The Cigarette Lighter Charging Myth—Busted Yes, you can charge a car battery through the cigarette lighter—but only under specific conditions. It will not jump-start a completely dead battery. It works best for slow trickle charging a partially drained battery over many hours. Our team tested this method on 12 different vehicles and found it rarely … Read more