Dive Summary:

• Owners of commercial equipment that does not have a conventional power source, such as alternative-fuel vehicles, can have a stolen-vehicle-recovery system with a self-contained battery good for up to seven years.
• Accepted by police agencies that have direction-finding radio gear, the LoJack system can be activated when a vehicle is discovered to be missing.
• The company says 71% of commercial vehicle owners suffer theft losses involving vehicles.

From the article:

This self-powered, self-contained radio frequency based system is based on a proprietary power management protocol that enables a battery life of up to seven years. ...