This Schumacher XI41DU DC to AC power inverter has a 820 watt peak and 410 continuous watts. The unit features two 120 volt AC household outlet and a USB port. The digital display is easy to read and the built-in high speed fan keeps the inverter cool. The thermal and surge protection offers better safety. A low battery alarm, cut off and high battery voltage shutdown ensures proper use. The inverter connects with 12 volt plug or clamps.