A system of saving battery power in a battery powered Wi-Fi device. The system includes a battery powered Wi-Fi device configured to transmit a customized beacon frame from the battery powered Wi-Fi device to a Wi-Fi enabled device. The customized beacon frame includes battery status information. In another form, a method of saving battery power in a battery powered Wi-Fi device. The method includes transmitting a customized beacon frame from the battery powered Wi-Fi device to a Wi-Fi enabled device. The customized beacon frame includes battery status information. In another form, a system for saving sensor battery power includes a battery powered sensor configured to transmit a customized beacon frame from the battery powered sensor to a Wi-Fi enabled device. The customized beacon frame includes sensor data. Customized beacon frame may be sent from the Wi-Fi enabled device to a wireless network.