Micro USB Car Charger - Cigarette Power Adapter Charge and use your smartphone at the same time. Special circuitry design protects your unit from overcharging and short-circuiting. The charger fits cigarette adaptors in both foreign and domestic vehicles. Reasons to buy Micro USB Car Charger - Cigarette Power Adapter Charge in car through your cigarette lighter socket Will not overcharge your unit (reverse circuit protection) Fuse protected Coiled Cord LED Indicator shows charging status of your unit Robust and compact design, 100% new, high durable quality Works on 12 and 24 volt batteries