★ CIGARETTE LIGHTER SPLITTER ADAPTER - Splits 1 car cigarette lighter port to 2 DC ports, 1 cigarette lighter male plug to 2 female sockets. A 2-Way cigarette lighter splitter adapter extension ...

The fastest way is with an inverter, which turns a car's cigarette lighter into a standard outlet. If you have a new laptop with USB-C, you could charge it with a power bank or car adapter.