Looking for Answers about NPower Portable Power System - 400 Watts?

This NPower portable power system supplies household electricity for emergency backup power or power you can bring anywhere. Electronically converts 12V power from the battery pack to a 110V power supply that can provide power to run household appliances, tools and more. Powered by a rechargeable sealed AGM battery. Includes a built-in inverter and five AC sockets. Watts: 400, Amps: 40, Volts: 120, Running Watts: 400, Surge Watts: 800, Compatible With: 120V home appliances, LED Indicators: Yes, Battery Type: Sealed lead acid, Built in Inverter: Yes, AC Outlets (qty.): 5, USB Ports (qty.): 1, DC Outlets (qty.): None, Rechargeable: Yes, GFCI Protection: No, Includes Solar Charger: No, Includes Air Compressor: No, Includes Flashlight: No, Includes Sound System: No, Handle Included: Yes, Storage Compartment: No, Dimensions L x W x H (in.): 18 1/2 x 4 3/4 x 10 3/4 For outdoor and indoor applications Recharges from standard wall outlet  Includes 5V, 500mA USB port for versatile usage