Battery monitoring devices that may be attached to a battery to monitor the performance of the battery and operating software for use therewith, sold as a unit; Battery monitors; Battery performance monitors; Electronic devices, namely, energy meters for tracking and monitoring energy usage; Electronic devices, namely, energy submeters for tracking and monitoring energy usage; Electronic devices, namely, handhelds for exchanging data in energy meters or submeters; Electronic motor vehicle ignition tuning kits comprised of an electronic control unit that monitors engine performances and delivers re-calculated sensor values to the original engine control unit to increase engine performance; Electronic location and immobilization devices installed after purchase for use with vehicles; Monitoring devices for monitoring battery performance characteristics; Vehicle safety equipment, namely, back-up sensors and cameras; Vehicle safety equipment, namely, electronic tire pressure monitors; Vehicle safety equipment, namely, electronic vibration, shock, motion, angle, temperature and voltage monitors