When a storm hits, you might find yourself without an essential power source. With the Schumacher XI41B 410 Continuous Watt/820 Peak Watt Power Inverter your car can be your emergency power source, generating safe reliable power. It's also perfect for tailgating, camping, and other off-grid activities. It works by converting your vehicle's 12V DC power into safe 120V AC household power. Plus, with two 120V AC outlets and a 2A USB port you can power essential items, such as fans, lights, smartphones, and other electronics. A number of built-in safety features is designed to protect the inverter, your battery, and connected devices from harm. These safety features include replaceable fuses, surge protection, thermal protection, a low battery alarm, and a high-speed cooling fan. In addition, the XI41B gives you two ways to connect the inverter to your battery with included battery clamps or a DC accessory plug.