Patent ID: 7200425

Claim:
A battery assembly system for a cellular telephone, comprising: a first battery for providing power to the cellular telephone and having terminals for establishing an electrical connection with the cellular telephone; a first sound generating device attached to the first battery and comprising memory for storing a first sound file downloaded from a removable memory device attachable to the first battery, wherein the first sound generating device is triggered to play a sound alert associated with the first sound file when the first battery is installed in the cellular telephone upon sensing an electrical signal to the first battery produced by the cellular telephone through the terminals upon detection of a telephone call by the cellular telephone and wherein further, the first sound generating device is triggered to play a sound alert associated with the first sound file upon sensing an electrical signal to the first battery produced by the cellular telephone through the terminals due to an event at the cellular telephone other than an incoming telephone call; a second battery for providing power to the cellular telephone and having terminals for establishing an electrical connection with the cellular telephone; a second sound generating device attached to the second battery and comprising memory for storing a second sound file downloaded from the removable memory device attachable to the second battery where the second sound file is different from the first sound file, wherein the second sound generating device is triggered to play a sound alert associated with the second sound file when the second battery is installed in the cellular telephone upon sensing an electrical signal to the second battery produced by the cellular telephone through the terminals upon detection of the telephone call by the cellular telephone and wherein further, the second sound generating device is triggered to also play a sound alert associated with the first sound file upon sensing an electrical signal to the second battery produced by the cellular telephone through the terminals due to an event at the cellular telephone other than an incoming telephone call.