A power WiFi device includes an AC sharing module, including a plurality of AC outlets and being configured to receive an AC input from an AC power supply and distribute the power through the AC outlets; an AC/DC converter being connected to the AC sharing module and configured to convert the AC input to an DC voltage; a DC voltage regulator being connected to the AC/DC converter and an external DC power supply, and being configured to regulate the DC voltage from the AC/DC converter and an external DC input; a cellular network interface being connected to the DC voltage regulator and configured to establish a network connection to a cellular network; an Ethernet interface being connected to the cellular network interface and configured to share the network connection; and a wireless network being connected to the cellular network interface and configured to share the network connection.