This compact 150 Watt power inverter has 1 AC outlet to charge your home powered electronics and 1 USB port with 5 Volt and 2.1 Ampere output. Traditional USB ports have an output ranging from 5 milliampere to 1 Ampere, but iPad and tablets require 2.1 Ampere USB ports. Other compatible electronics include e-readers, laptops, smartphones, mp3 players, etc. It allows you to run and charge electronics in your vehicle. As an added bonus, the DC cord detaches to reveal a built in airline port so this can also be used on an airplane too (requires compatible power port on airplane). This inverter has several safety features, such as overvoltage, overload, short circuit, and high temperature protection and low voltage shut-off. It provides 150 Watts continuous power and 300 Watts peak surge power. In an industry where actual wattage output varies so much, Wagan has introduced the new term, TrueRated Power. Several inverter competitors claim continuous power when in fact, they often run only 20 minutes continuous and drop down to 80 percent of the advertised wattage. All Wagan inverters feature TrueRated Power and perform at 100 percent, 24 hours a day.