Don’t feel like buying a new car just to plug in your laptop? Then we’ve got you covered. The simplest power inverters plug into your car’s cigarette-lighter or power-point to instantly ...

A laptop can often run for a few hours off a car battery and inverter without impairing the vehicle’s ability to start. A box fan, impact drill, or hair dryer can drain a battery in minutes.

The biggest stories of the day delivered to your inbox.