Ensure that you?re never stranded with a flat battery when you pick up the DieHard 140 Watt Power Inverter. This compact unit plugs directly into your vehicle?s 12V accessory outlet transforming it to AC power that you can use to charge up your tablet mobile phone MP3 or laptop. The unit is equipped with a high-speed fan and overload protection to ensure that your devices stay safe through the entire charging process. Plus the LED light indicates whether the unit is operating properly with just a glance so you can keep your eyes on the road as your devices charge.