Patent ID: 7957775

Claim:
A method of providing a low battery notification service to users of battery-powered wireless devices, said method being performed in a notification server and comprising: a) receiving a low battery warning message from a remote wireless device, said warning message including a wireless device identifier for said remote wireless device; b) retrieving a notification list associated with the wireless device identifier, said notification list including a plurality of notification addresses; c) selecting at least one notification address from said notification list; d) sending a low battery notification message to each selected notification address: e) receiving a response to a sent low battery notification message; f) determining whether said response satisfies predetermined criteria; g) in response to a determination that said response fails to satisfy the predetermined criteria, repeating operations c), d), e) and f) until it is determined that at least one received response satisfies the predetermined criteria or until the notification list has been exhausted, whichever is first to occur.