With the Pyle PNV4000 4000W Modified Sine Wave Power Inverters you can be more productive, have more fun and use all the electronics you want in your car or truck. It converts 4000W of 12V DC power to 115V AC power safely and effectively in your vehicle. Power your cell phone charger, iPod and other electronics with this safe and convenient 12 volt power inverter. This DC to AC power inverter includes a built-in cooling fan and low voltage, high voltage, overload and thermal protection to keep your car system and electronics safe. The Pyle PNV4000 4000W Modified Sine Wave Power Inverter is perfect for people on the go who need access to all of their electronics, all the time.