Patent ID: 8552856

Claim:
A mobile telephone comprising: a control part, accepting commands from a user, and carrying out the commands by taking an action on the mobile telephone responsive to the commands; a wireless communication part that communicates information indicative of the commands to a remote device; a connection to a battery, operating said control part and said wireless communication part; a battery monitor that monitors a charge level of the battery, wherein information indicative of said charge level of the battery is communicated to said remote device by said wireless communication part; and a processing part that receives said charge level, detects a battery voltage lower than a specified amount as said charge level, and wherein said information indicative of said charge level comprises an indication that the battery voltage is lower than the specified amount, wherein said wireless communication part also receives information, wherein said wireless communication part sends said information indicative of the charge level multiple times until receiving an indication that the information has been received by the remote device, and wherein said wireless communication part also obtains a remaining time that the mobile telephone can operate and displays information on the display about a remaining time that the mobile telephone can operate.